Comparison between RISC architectures: MIPS, ARM and SPARCApurv Nerlekar
Provides an overview about the three architectures, and if followed during any product design would lead us to choose a better architecture providing high performance of the product which ultimately means a leap in the market.
Comparison between RISC architectures: MIPS, ARM and SPARCApurv Nerlekar
Provides an overview about the three architectures, and if followed during any product design would lead us to choose a better architecture providing high performance of the product which ultimately means a leap in the market.
This presentation contains an overview of novelties in ARMv8-A and details on application binary interface (ABI), memory management unit (MMU), caches and interrupts.
This talk was held within GlobalLogic Lviv Embedded TechTalk on November 23d, 2017.
SFO15-406: ARM FDPIC toolset, kernel & libraries for Cortex-M & Cortex-R mmul...Linaro
SFO15-406: ARM FDPIC toolset, kernel & libraries for Cortex-M & Cortex-R mmuless cores
Speakers:
Date: September 24, 2015
★ Session Description ★
ARM FDPIC toolset and kernel patches makes it possible to boot a mmu-less Linux kernel and support userland applications which rely on dynamic loading. No source change are needed to compiler the application (compared to the BFLAT model). The presentation will focus on the toolset structure and characteristics and give some insights on the FDPIC ABI.
★ Resources ★
Video: https://www.youtube.com/watch?v=TNRNQNEcwVI
Presentation: http://www.slideshare.net/linaroorg/sfo15406-arm-fdpic-toolset-kernel-libraries-for-cortexm-cortexr-mmuless-cores
Etherpad: pad.linaro.org/p/sfo15-406
Pathable: https://sfo15.pathable.com/meetings/303078
★ Event Details ★
Linaro Connect San Francisco 2015 - #SFO15
September 21-25, 2015
Hyatt Regency Hotel
http://www.linaro.org
http://connect.linaro.org
BUD17-218: Scheduler Load tracking update and improvement Linaro
Session ID: BUD17-218
Session Name: Scheduler Load tracking update and improvement - BUD17-218
Speaker: Vincent Guittot
Track: Power Management
★ Session Summary ★
The Per Entity Load Tracking (PELT) is a key stone in tasks placement of the scheduler but suffers of some weakness when it’s not just bugs. During the last LPC, it has been decided to fix all pending issues of PELT before starting to consider another load tracking mechanism for scheduler and/or EAS. This session will show the improvement reached since the last connect and the LPC as well as the next ones. We will also looks at the RT class which lacks a good load tracking.
---------------------------------------------------
★ Resources ★
Event Page: http://connect.linaro.org/resource/bud17/bud17-218/
Presentation: https://www.slideshare.net/linaroorg/bud17218-scheduler-load-tracking-update-and-improvement
Video: https://youtu.be/9mY_wZdwmq0
---------------------------------------------------
★ Event Details ★
Linaro Connect Budapest 2017 (BUD17)
6-10 March 2017
Corinthia Hotel, Budapest,
Erzsébet krt. 43-49,
1073 Hungary
---------------------------------------------------
Keyword: Power-management, scheduler, PELT
http://www.linaro.org
http://connect.linaro.org
---------------------------------------------------
Follow us on Social Media
https://www.facebook.com/LinaroOrg
https://twitter.com/linaroorg
https://www.youtube.com/user/linaroorg?sub_confirmation=1
https://www.linkedin.com/company/1026961
This presentation contains an overview of novelties in ARMv8-A and details on application binary interface (ABI), memory management unit (MMU), caches and interrupts.
This talk was held within GlobalLogic Lviv Embedded TechTalk on November 23d, 2017.
SFO15-406: ARM FDPIC toolset, kernel & libraries for Cortex-M & Cortex-R mmul...Linaro
SFO15-406: ARM FDPIC toolset, kernel & libraries for Cortex-M & Cortex-R mmuless cores
Speakers:
Date: September 24, 2015
★ Session Description ★
ARM FDPIC toolset and kernel patches makes it possible to boot a mmu-less Linux kernel and support userland applications which rely on dynamic loading. No source change are needed to compiler the application (compared to the BFLAT model). The presentation will focus on the toolset structure and characteristics and give some insights on the FDPIC ABI.
★ Resources ★
Video: https://www.youtube.com/watch?v=TNRNQNEcwVI
Presentation: http://www.slideshare.net/linaroorg/sfo15406-arm-fdpic-toolset-kernel-libraries-for-cortexm-cortexr-mmuless-cores
Etherpad: pad.linaro.org/p/sfo15-406
Pathable: https://sfo15.pathable.com/meetings/303078
★ Event Details ★
Linaro Connect San Francisco 2015 - #SFO15
September 21-25, 2015
Hyatt Regency Hotel
http://www.linaro.org
http://connect.linaro.org
BUD17-218: Scheduler Load tracking update and improvement Linaro
Session ID: BUD17-218
Session Name: Scheduler Load tracking update and improvement - BUD17-218
Speaker: Vincent Guittot
Track: Power Management
★ Session Summary ★
The Per Entity Load Tracking (PELT) is a key stone in tasks placement of the scheduler but suffers of some weakness when it’s not just bugs. During the last LPC, it has been decided to fix all pending issues of PELT before starting to consider another load tracking mechanism for scheduler and/or EAS. This session will show the improvement reached since the last connect and the LPC as well as the next ones. We will also looks at the RT class which lacks a good load tracking.
---------------------------------------------------
★ Resources ★
Event Page: http://connect.linaro.org/resource/bud17/bud17-218/
Presentation: https://www.slideshare.net/linaroorg/bud17218-scheduler-load-tracking-update-and-improvement
Video: https://youtu.be/9mY_wZdwmq0
---------------------------------------------------
★ Event Details ★
Linaro Connect Budapest 2017 (BUD17)
6-10 March 2017
Corinthia Hotel, Budapest,
Erzsébet krt. 43-49,
1073 Hungary
---------------------------------------------------
Keyword: Power-management, scheduler, PELT
http://www.linaro.org
http://connect.linaro.org
---------------------------------------------------
Follow us on Social Media
https://www.facebook.com/LinaroOrg
https://twitter.com/linaroorg
https://www.youtube.com/user/linaroorg?sub_confirmation=1
https://www.linkedin.com/company/1026961
AArch64 and ARM GDB ports were added some years ago, but some useful features are still missing. We started to add these features to GDB in 2015 and most of them are already accepted by the GDB mainline.
This presentation will discuss these new added features, such as reverse debugging, tracepoint, and multi-arch debugging, together with some explanations on how does GDB support them in general.
This presentation will also introduce some basic GDB or debugger internal knowledges and also some GDB in-progress projects in which we plan to do and are interested in.
LAS16-301: OpenStack on Aarch64, running in production, upstream improvements...Linaro
LAS16-301: OpenStack on Aarch64, running in production, upstream improvements, and interoperability
Speakers: Yibo Cai, Gema Gomez Solano, Jack He, Marcin Juskiewicz, Martin Stadtler
Date: September 28, 2016
★ Session Description ★
“OpenStack is at the heart of the next generation of the opensource
cloud on a global scale. During this presentation, we will touch on three themes, running an OpenStack based cloud in production by Gema Gomez and Andy Doan, followed by Marcin talking about the packaging and bug fixing on archives required to make that happen on AArch64. Jack He and Yibo Cai, will explain what it is like working with the the upstream project, the development environment, the current patches and what needs to be done next. Then Gema Gomez will Introduce the OpenStack Interop Working Group. Why is interoperability important for OpenStack? And What is Linaro doing to improve the interoperability of OpenStack?
★ Resources ★
Etherpad: pad.linaro.org/p/las16-301
Presentations & Videos: http://connect.linaro.org/resource/las16/las16-301/
★ Event Details ★
Linaro Connect Las Vegas 2016 – #LAS16
September 26-30, 2016
http://www.linaro.org
http://connect.linaro.org
HKG15-405: Redundant zero/sign-extension elimination in GCCLinaro
HKG15-405: Redundant zero/sign-extension elimination in GCC
---------------------------------------------------
Speaker: Kugan Vivekanandarajah
Date: February 12, 2015
---------------------------------------------------
★ Session Summary ★
Several instances of redundant zero/sign-extension related bugs are reported in GCC and Linaro bugzilla. These bugs are sources of performance/code size penalties. This presentation will discuss the history, design considerations, implementation, and performance characteristics of redundant zero/sign extension elimination in GCC. We will then discuss a new compiler pass that performs computation in promoted type mode in such a way that removes redundant zero/sign-extensions.
--------------------------------------------------
★ Resources ★
Pathable: https://hkg15.pathable.com/meetings/250833
Video: https://www.youtube.com/watch?v=JkTkmGe3tms
Etherpad: http://pad.linaro.org/p/hkg15-405
---------------------------------------------------
★ Event Details ★
Linaro Connect Hong Kong 2015 - #HKG15
February 9-13th, 2015
Regal Airport Hotel Hong Kong Airport
---------------------------------------------------
http://www.linaro.org
http://connect.linaro.org
ILP32 is a programming model that may be useful on AArch64 systems for performance and also for legacy code with 32-bit data size assumptions. We combined ILP32 support from upstream projects with the LEAP distribution to enable experimentation with this model. This talk discusses the relative benchmark performance of the LP64 and ILP32 programming models under AArch64.
BKK16-504 Running Linux in EL2 VirtualizationLinaro
Running Linux in EL2 offers potentially important performance benefits for running VMs at the cost of more complicated low-level code paths in the kernel and worse performance for userspace applications. This talk explores the required actions taken so far, an analysis of the benefits, and discusses challenges with upstreaming this approach.
HKG15-400: Next steps in KVM enablement on ARMLinaro
HKG15-400: Next steps in KVM enablement on ARM
---------------------------------------------------
Date: February 12, 2015
---------------------------------------------------
★ Session Summary ★
Next steps in KVM enablement on ARM
--------------------------------------------------
★ Resources ★
Pathable: https://hkg15.pathable.com/meetings/250827
Video: https://www.youtube.com/watch?v=g8noeSpWVDY
Etherpad: http://pad.linaro.org/p/hkg15-400
---------------------------------------------------
★ Event Details ★
Linaro Connect Hong Kong 2015 - #HKG15
February 9-13th, 2015
Regal Airport Hotel Hong Kong Airport
---------------------------------------------------
http://www.linaro.org
http://connect.linaro.org
LAS16-500: The Rise and Fall of Assembler and the VGIC from HellLinaro
LAS16-500: The Rise and Fall of Assembler and the VGIC from Hell
Speakers: Marc Zyngier, Christoffer Dall
Date: September 30, 2016
★ Session Description ★
KVM/ARM has grown up. While the initial implementation of virtualization support for ARM processors in Linux was a quality upstream software project, there were initial design decisions simply not suitable for a long-term maintained hypervisor code base. For example, the way KVM/ARM utilized the hardware support for virtualization, was by running a ‘switching’ layer of code in EL2, purely written in assembly. This was a reasonable design decision in the initial implementation, as the switching layer only had to do one thing: Switch between a VM and the host. But as we began to optimize the implementation, add support for ARMv8.1 and VHE, and added features such as debugging support, we had to move to a more integrated approach, writing the switching logic in C code as well. As another example, the support for virtual interrupts, famously known as the VGIC, was designed with a focus on optimizing MMIO operations. As it turns out, MMIO operations is a less important and infrequent operation on the GIC, and the design had some serious negative consequences for supporting other state transitions for virtual interrupts and had negative performance implications. Therefore, we completely redesigned the VGIC support, and implemented the whole thing from scratch as a team effort, with a very promising result, upstream since Linux v4.7. In this talk we will cover the evolution of this software project and give an overview of the state of the project as it is today.
★ Resources ★
Etherpad: pad.linaro.org/p/las16-500
Presentations & Videos: http://connect.linaro.org/resource/las16/las16-500/
★ Event Details ★
Linaro Connect Las Vegas 2016 – #LAS16
September 26-30, 2016
http://www.linaro.org
http://connect.linaro.org
A 32-Bit Parameterized Leon-3 Processor with Custom Peripheral IntegrationTalal Khaliq
A new descriptive method to use ARM AHB and APB Bus architecture to add new IP Cores and enhance functionality of 32 bit Processor (Leon3). AHB and APB addressing and GUI enhancement is also discussed.
Snapdragon is a family of mobile systems on a chip (SoC) by Qualcomm. Qualcomm considers Snapdragon a "platform" for use in smartphones, tablets, and smartbook devices.
ARM is a family of RISC-based microprocessors and microcontrollers designed by ARM Inc., Cambridge, England.
ARM chips are high-speed processors that are known for their small die size and low power requirements.
How to Select Hardware for Internet of Things Systems?Hannes Tschofenig
With the increasing commercial interest in Internet of Things (IoT) the question about a reasonable hardware configuration surfaces again and again.
Peter Aldworth, a hardware engineer with more than 19 years of experience, discusses this topic in a presentation given to the IETF community.
Smartphones architecture is generally different from
common desktop architectures. It is limited by power, size and
cost of manufacturing with the goal to provide the best
experience for users in a minimum cost. Stemming from this
fact, modern micro-processors are designed with an
architecture that has three main components: an application
processor that executes the end user’s applications, a modem
responding to baseband radio activities, and peripheral devices
for interacting with the end user.
Parallelism
Multicores:
The Cortex A7 MPCore processor implements the ARMv7-A
architecture. The Cortex A7 MPCore processor has one to
four processors in a single multi-processor device. The
following figure shows an example configuration with four
processors [3].
In this paper, we are discussing the architecture of the
application processor of Apple iPhone. Specifically, Apple
iPhone uses ARM Cortex generation of processors as their
core. The following sections discusses this architecture in terms
of Instruction Set Architecture, Memory Hierarchy and
Parallelism.
"Applications, programming languages, and libraries that leverage sophisticated network hardware capabilities have a natural advantage when used in today’s and tomorrow’s high-performance and data center computer environments. Modern RDMA based network interconnects provides incredibly rich functionality (RDMA, Atomics, OS-bypass, etc.) that enable low-latency and high-bandwidth communication services. The functionality is supported by a variety of interconnect technologies such as InfiniBand, RoCE, iWARP, Intel OPA, Cray’s Aries/Gemini, and others. OFA organization and LinuxRDMA community have been playing a predominant role in the enablement efficient and vendor agnostic software stack for those interconnects. Over the last decade, the community has developed variety user/kernel level protocols and libraries that enable a variety of applications over RDMA including MPI, SHMEM, NFS over RDMA, IPoIB, and many others."
"With the emerging availability server platforms based on ARM CPU architecture, it is important to understand ARM integrates with RDMA hardware and software eco-system. In this talk, we will overview ARM architecture and system software stack. We will discuss how ARM CPU interacts with network devices and accelerators. In addition, we will share our experience in enabling RDMA software stack (OFED/MOFED Verbs) and one-sided communication libraries (Open UCX, OpenSHMEM/SHMEM) on ARM and share preliminary evaluation results."
Watch the video presentation: http://wp.me/p3RLHQ-gyO
Learn more: https://www.openfabrics.org/index.php/abstracts-agenda.html
Sign up for our insideHPC Newsletter: http://insidehpc.com/newsletter
This PPT is about the ARM processors, family of processors,significance,applications and architectural features and Instruction Set Architecture useful for beginners
Deep Learning Neural Network Acceleration at the Edge - Andrea GalloLinaro
Short
The growing amount of data captured by sensors and the real time constraints imply that not only big data analytics but also Machine Learning (ML) inference shall be executed at the edge. The multiple options for neural network acceleration in Arm-based platforms provide an unprecedented opportunity for new intelligent devices. It also raises the risk of fragmentation and duplication of efforts when multiple frameworks shall support multiple accelerators.
Andrea Gallo, Linaro VP of Segment Groups, will summarise the existing NN frameworks, accelerator solutions, and will describe the efforts underway in the Arm ecosystem.
Abstract
The dramatically growing amount of data captured by sensors and the ever more stringent requirements for latency and real time constraints are paving the way for edge computing, and this implies that not only big data analytics but also Machine Learning (ML) inference shall be executed at the edge. The multiple options for neural network acceleration in recent Arm-based platforms provides an unprecedented opportunity for new intelligent devices with ML inference. It also raises the risk of fragmentation and duplication of efforts when multiple frameworks shall support multiple accelerators.
Andrea Gallo, Linaro VP of Segment Groups, will summarise the existing NN frameworks, model description formats, accelerator solutions, low cost development boards and will describe the efforts underway to identify the best technologies to improve the consolidation and enable the competitive innovative advantage from all vendors.
Audience
The session will be useful for executives to engineers. Executives will gain a deeper understanding of the issues and opportunities. Engineers at NN acceleration IP design houses will take away ideas for how to collaborate in the open source community on their area of expertise, how to evaluate the performance and accelerate multiple NN frameworks without modifying them for each new IP, whether it be targeting edge computing gateways, smart devices or simple microcontrollers.
Benefits to the Ecosystem
The AI deep learning neural network ecosystem is starting just now and it has similar implications with open source as GPU and video accelerators had in the early days with user space drivers, binary blobs, proprietary APIs and all possible ways to protect their IPs. The session will outline a proposal for a collaborative ecosystem effort to create a common framework to manage multiple NN accelerators while at the same time avoiding to modify deep learning frameworks with multiple forks.
Huawei’s requirements for the ARM based HPC solution readiness - Joshua MoraLinaro
Talk Title: Huawei’s requirements for the ARM based HPC solution readiness
Talk Abstract:
A high level review of a wide range of requirements to architect an ARM based competitive HPC solution is provided. The review combines both Industry and Huawei’s unique views with the intend to communicate openly not only the alignment and support in ongoing efforts carried over by other ARM key players but to brief on the areas of differentiation that Huawei is investing towards the research, development and deployment of homegrown ARM based HPC solution(s).
Speaker: Joshua Mora
Speaker Bio:
20 years of experience in research and development of both software and hardware for high performance computing. Currently leading the architecture definition and development of ARM based HPC solutions, both hardware and software, all the way to the applications (ie. turnkey HPC solutions for different compute intensive markets where ARM will succeed !!).
Bud17 113: distribution ci using qemu and open qaLinaro
“Delivering a well working distribution is hard. There are a lot of different hardware platforms that need to be verified and the software stack is in a big flux during development phases. In rolling releases, this gets even worse, as nothing ever stands still. The only sane answer to that problem are working Continuous Integration tests. The SUSE way to check whether any change breaks normal distribution behavior is OpenQA. Using OpenQA we can automatically run tests that hard working QA people did manually in the old days. That way we have fast enough turnaround times to find and reject breaking changes This session shows how OpenQA works, what pitfalls we had to make ARM work with OpenQA and what we’re doing to improve it for ARM specific use cases.”
OpenHPC Automation with Ansible - Renato Golin - Linaro Arm HPC Workshop 2018Linaro
Speaker: Renato Golin
Speaker Bio:
He started programming in the late 80's in C for PCs after a few years playing with 8-bit computers, but he only started programming professionally in the late 90's during the .com bubble. After many years working on Internet's back-end, he moved to UK and worked a few years on bioinformatics at EBI before joining ARM, where he worked on the DS-5 debugger and on the EDG-to-LLVM bridge, where he became the LLVM Tech Lead. Recently, he worked with large clusters and big data at HPCC before moving to Linaro.
Talk Title: OpenHPC Automation with Ansible
Talk Abstract: "In order to test OpenHPC packages and components and to use it as a
platform to benchmark HPC applications, Linaro is developing an automated deployment strategy, using Ansible, Mr-Provisioner and Jenkins, to install the
OS, OpenHPC and prepare the environment on varied architectures (Arm, x86). This work is meant to replace the existing ageing Bash-based recipes upstream while still keeping the documents intact. Our aim is to make it easier to vary hardware configuration, allow for different provisioning techniques and mix internal infrastructure logic to different labs, while still using the same recipes. We hope this will help more people use OpenHPC with a better out-of-the-box experience and with more robust results"
HPC network stack on ARM - Linaro HPC Workshop 2018Linaro
Speaker: Pavel Shamis
Company: Arm
Speaker Bio:
"Pavel is a Principal Research Engineer at ARM with over 16 years of experience in development HPC solutions. His work is focused on co-design software and hardware building blocks for high-performance interconnect technologies, development communication middleware and novel programming models. Prior to joining ARM, he spent five years at Oak Ridge National Laboratory (ORNL) as a research scientist at Computer Science and Math Division (CSMD). In this role, Pavel was responsible for research and development multiple projects in high-performance communication domain including: Collective Communication Offload (CORE-Direct & Cheetah), OpenSHMEM, and OpenUCX. Before joining ORNL, Pavel spent ten years at Mellanox Technologies, where he led Mellanox HPC team and was one of the key driver in enablement Mellanox HPC software stack, including OFA software stack, OpenMPI, MVAPICH, OpenSHMEM, and other.
Pavel is a recipient of prestigious R&D100 award for his contribution in development of the CORE-Direct collective offload technology and he published in excess of 20 research papers.
"
Talk Title: HPC network stack on ARM
Talk Abstract:
Applications, programming languages, and libraries that leverage sophisticated network hardware capabilities have a natural advantage when used in today¹s and tomorrow's high-performance and data center computer environments. Modern RDMA based network interconnects provides incredibly rich functionality (RDMA, Atomics, OS-bypass, etc.) that enable low-latency and high-bandwidth communication services. The functionality is supported by a variety of interconnect technologies such as InfiniBand, RoCE, iWARP, Intel OPA, Cray¹s Aries/Gemini, and others. Over the last decade, the HPC community has developed variety user/kernel level protocols and libraries that enable a variety of high-performance applications over RDMA interconnects including MPI, SHMEM, UPC, etc. With the emerging availability HPC solutions based on ARM CPU architecture it is important to understand how ARM integrates with the RDMA hardware and HPC network software stack. In this talk, we will overview ARM architecture and system software stack, including MPI runtimes, OpenSHMEM, and OpenUCX.
It just keeps getting better - SUSE enablement for Arm - Linaro HPC Workshop ...Linaro
Speaker: Jay Kruemcke
Speaker Company: SUSE
Bio:
"Jay is responsible for the SUSE Linux server products for High Performance Computing, 64-bit ARM systems, and SUSE Linux for IBM Power servers.
Jay has built an extensive career in product management including using social media for client collaboration, product positioning, driving future product directions, and evangelizing the capabilities and future directions for dozens of enterprise products.
"
Talk Title: It just keeps getting better - SUSE enablement for Arm
Talk Abstract:
SUSE has been delivering commercial Linux support for Arm based servers since 2016. Initially the focus was on high end servers for HPC and Ceph based software defined storage. But we have enabled a number of other Arm SoCs and are even supporting the Raspberry Pi. This session will cover the SUSE products that are available for the Arm platform and view to the future.
Intelligent Interconnect Architecture to Enable Next Generation HPC - Linaro ...Linaro
Speakers: Gilad Shainer and Scot Schultz
Company: Mellanox Technologies
Talk Title: Intelligent Interconnect Architecture to Enable Next
Generation HPC
Talk Abstract:
The latest revolution in HPC interconnect architecture is the development of In-Network Computing, a technology that enables handling and accelerating application workloads at the network level. By placing data-related algorithms on an intelligent network, we can overcome the new performance bottlenecks and improve the data center and applications performance. The combination of In-Network Computing and ARM based processors offer a rich set of capabilities and opportunities to build the next generation of HPC platforms.
Gilad Shainer Bio:
Gilad Shainer has served as Mellanox's vice president of marketing since March 2013. Previously, Mr. Shainer was Mellanox's vice president of marketing development from March 2012 to March 2013. Mr. Shainer joined Mellanox in 2001 as a design engineer and later served in senior marketing management roles between July 2005 and February 2012. Mr. Shainer holds several patents in the field of high-speed networking and contributed to the PCI-SIG PCI-X and PCIe specifications. Gilad Shainer holds a MSc degree (2001, Cum Laude) and a BSc degree (1998, Cum Laude) in Electrical Engineering from the Technion Institute of Technology in Israel.
Scot Schultz Bio:
Scot Schultz is a HPC technology specialist with broad knowledge in operating systems, high speed interconnects and processor technologies. Joining the Mellanox team in 2013, Schultz is 30-year veteran of the computing industry. Prior to joining Mellanox, he spent the past 17 years at AMD in various engineering and leadership roles in the area of high performance computing. Scot has also been instrumental with the growth and development of various industry organizations including the Open Fabrics Alliance, and continues to serve as a founding board-member of the OpenPOWER Foundation and Director of Educational Outreach and founding member of the HPC-AI Advisory Council.
Yutaka Ishikawa - Post-K and Arm HPC Ecosystem - Linaro Arm HPC Workshop Sant...Linaro
Yutaka Ishikawa - Post-K and Arm HPC Ecosystem - Linaro Arm HPC Workshop Santa Clara 2018
Bio: "Yutaka Ishikawa is the project leader of developing the post K
supercomputer. From 1987 to 2001, he was a member of AIST (former
Electrotechnical Laboratory), METI. From 1993 to 2001, he was the
chief of Parallel and Distributed System Software Laboratory at Real
World Computing Partnership. He led development of cluster system
software called SCore, which was used in several large PC cluster
systems around 2004. From 2002 to 2014, he was a professor at the
University Tokyo. He led a project to design a commodity-based
supercomputer called T2K open supercomputer. As a result, three
universities, Tsukuba, Tokyo, and Kyoto, obtained each supercomputer
based on the specification in 2008. He was also involved with the
design of the Oakleaf-PACS, the successor of T2K supercomputer in both
Tsukuba and Tokyo, whose peak performance is 25PF."
Session Title: Post-K and Arm HPC Ecosystem
Session Description:
"Post-K, a flagship supercomputer in Japan, is being developed by Riken
and Fujitsu. It will be the first supercomputer with Armv8-A+SVE.
This talk will give an overview of Post-K and how RIKEN and Fujitsu
are currently working on software stack for an Arm architecture."
Andrew J Younge - Vanguard Astra - Petascale Arm Platform for U.S. DOE/ASC Su...Linaro
Event: Arm Architecture HPC Workshop by Linaro and HiSilicon
Location: Santa Clara, CA
Speaker: Andrew J Younge
Talk Title: Vanguard Astra - Petascale Arm Platform for U.S. DOE/ASC Supercomputing
Talk Desc: The Vanguard program looks to expand the potential technology choices for leadership-class High Performance Computing (HPC) platforms, not only for the National Nuclear Security Administration (NNSA) but for the Department of Energy (DOE) and wider HPC community. Specifically, there is a need to expand the supercomputing ecosystem by investing and developing emerging, yet-to-be-proven technologies and address both hardware and software challenges together, as well as to prove-out the viability of such novel platforms for production HPC workloads.
The first deployment of the Vanguard program will be Astra, a prototype Petascale Arm supercomputer to be sited at Sandia National Laboratories during 2018. This talk will focus on the arthictecural details of Astra and the significant investments being made towards the maturing the Arm software ecosystem. Furthermore, we will share initial performance results based on our pre-general availability testbed system and outline several planned research activities for the machine.
Bio: Andrew Younge is a R&D Computer Scientist at Sandia National Laboratories with the Scalable System Software group. His research interests include Cloud Computing, Virtualization, Distributed Systems, and energy efficient computing. Andrew has a Ph.D in Computer Science from Indiana University, where he was the Persistent Systems fellow and a member of the FutureGrid project, an NSF-funded experimental cyberinfrastructure test-bed. Over the years, Andrew has held visiting positions at the MITRE Corporation, the University of Southern California / Information Sciences Institute, and the University of Maryland, College Park. He received his Bachelors and Masters of Science from the Computer Science Department at Rochester Institute of Technology (RIT) in 2008 and 2010, respectively.
HKG18-501 - EAS on Common Kernel 4.14 and getting (much) closer to mainlineLinaro
Session ID: HKG18-501
Session Name: HKG18-501 - EAS on Common Kernel 4.14 and getting (much) closer to mainline
Speaker: Chris Redpath
Track: Mobile, Kernel
★ Session Summary ★
This session will introduce the changes to EAS planned for 4.14 kernel, and how Arm hopes that EAS will develop in future. EAS has already evolved from an Arm/Linaro joint project to involving a much wider community of SoC vendors, Google and interested device manufacturers. We will highlight the product-specific pieces remaining in the Android Common Kernel EAS implementation, and our plans to provide an upstreaming plan for each product feature. In particular, the new 'simplified energy model' is designed to provide mainline-friendliness and comparable performance using a simple DT expression of cpu power/performance.
---------------------------------------------------
★ Resources ★
Event Page: http://connect.linaro.org/resource/hkg18/hkg18-501/
Presentation: http://connect.linaro.org.s3.amazonaws.com/hkg18/presentations/hkg18-501.pdf
Video: http://connect.linaro.org.s3.amazonaws.com/hkg18/videos/hkg18-501.mp4
---------------------------------------------------
★ Event Details ★
Linaro Connect Hong Kong 2018 (HKG18)
19-23 March 2018
Regal Airport Hotel Hong Kong
---------------------------------------------------
Keyword: Mobile, Kernel
'http://www.linaro.org'
'http://connect.linaro.org'
---------------------------------------------------
Follow us on Social Media
https://www.facebook.com/LinaroOrg
https://www.youtube.com/user/linaroorg?sub_confirmation=1
https://www.linkedin.com/company/1026961
HKG18-501 - EAS on Common Kernel 4.14 and getting (much) closer to mainlineLinaro
"Session ID: HKG18-501
Session Name: HKG18-501 - EAS on Common Kernel 4.14 and getting (much) closer to mainline
Speaker: Chris Redpath
Track: Mobile, Kernel
★ Session Summary ★
This session will introduce the changes to EAS planned for 4.14 kernel, and how Arm hopes that EAS will develop in future. EAS has already evolved from an Arm/Linaro joint project to involving a much wider community of SoC vendors, Google and interested device manufacturers. We will highlight the product-specific pieces remaining in the Android Common Kernel EAS implementation, and our plans to provide an upstreaming plan for each product feature. In particular, the new 'simplified energy model' is designed to provide mainline-friendliness and comparable performance using a simple DT expression of cpu power/performance.
---------------------------------------------------
★ Resources ★
Event Page: http://connect.linaro.org/resource/hkg18/hkg18-501/
Presentation: http://connect.linaro.org.s3.amazonaws.com/hkg18/presentations/hkg18-501.pdf
Video: http://connect.linaro.org.s3.amazonaws.com/hkg18/videos/hkg18-501.mp4
---------------------------------------------------
★ Event Details ★
Linaro Connect Hong Kong 2018 (HKG18)
19-23 March 2018
Regal Airport Hotel Hong Kong
---------------------------------------------------
Keyword: Mobile, Kernel
'http://www.linaro.org'
'http://connect.linaro.org'
---------------------------------------------------
Follow us on Social Media
https://www.facebook.com/LinaroOrg
https://www.youtube.com/user/linaroorg?sub_confirmation=1
https://www.linkedin.com/company/1026961"
HKG18-315 - Why the ecosystem is a wonderful thing, warts and allLinaro
"Session ID: HKG18-315
Session Name: HKG18-315 - Why the ecosystem is a wonderful thing warts and all
Speaker: Andrew Wafaa
Track: Ecosystem Day
★ Session Summary ★
The Arm ecosystem is a vibrant place, but it's not always smooth sailing. This presentation will go through the highs and lows of getting the ecosystem fully Arm enabled.
---------------------------------------------------
★ Resources ★
Event Page: http://connect.linaro.org/resource/hkg18/hkg18-315/
Presentation: http://connect.linaro.org.s3.amazonaws.com/hkg18/presentations/hkg18-315.pdf
Video: http://connect.linaro.org.s3.amazonaws.com/hkg18/videos/hkg18-315.mp4
---------------------------------------------------
★ Event Details ★
Linaro Connect Hong Kong 2018 (HKG18)
19-23 March 2018
Regal Airport Hotel Hong Kong
---------------------------------------------------
Keyword: Ecosystem Day
'http://www.linaro.org'
'http://connect.linaro.org'
---------------------------------------------------
Follow us on Social Media
https://www.facebook.com/LinaroOrg
https://www.youtube.com/user/linaroorg?sub_confirmation=1
https://www.linkedin.com/company/1026961"
HKG18- 115 - Partitioning ARM Systems with the Jailhouse HypervisorLinaro
"Session ID: HKG18-115
Session Name: HKG18-115 - Partitioning ARM Systems with the Jailhouse Hypervisor
Speaker: Jan Kiszka
Track: Security
★ Session Summary ★
The open source hypervisor Jailhouse provides hard partitioning of multicore systems to co-locate multiple Linux or RTOS instances side by side. It aims at low complexity and minimal footprint to achieve deterministic behavior and enable certifications according to safety or security standards. In this session, we would like to look at the ARM-specific status of Jailhouse and discuss applications, to-dos and possible collaborations around it with the ARM community. The session is intended to be half presentation, half Q&A / discussion.
---------------------------------------------------
★ Resources ★
Event Page: http://connect.linaro.org/resource/hkg18/hkg18-115/
Presentation: http://connect.linaro.org.s3.amazonaws.com/hkg18/presentations/hkg18-115.pdf
Video: http://connect.linaro.org.s3.amazonaws.com/hkg18/videos/hkg18-115.mp4
---------------------------------------------------
★ Event Details ★
Linaro Connect Hong Kong 2018 (HKG18)
19-23 March 2018
Regal Airport Hotel Hong Kong
---------------------------------------------------
Keyword: Security
'http://www.linaro.org'
'http://connect.linaro.org'
---------------------------------------------------
Follow us on Social Media
https://www.facebook.com/LinaroOrg
https://www.youtube.com/user/linaroorg?sub_confirmation=1
https://www.linkedin.com/company/1026961"
"Session ID: HKG18-TR08
Session Name: HKG18-TR08 - Upstreaming SVE in QEMU
Speaker: Alex Bennée,Richard Henderson
Track: Enterprise
★ Session Summary ★
ARM's Scalable Vector Extensions is an innovative solution to processing highly data parallel workloads. While several out-of-tree attempts at implementing SVE support for QEMU existed, we took a fundamentally different approach to solving key challenges and therefore pursued a from-scratch QEMU SVE implementation in Linaro. Our strategic choice was driven by several factors. First as an ""upstream first"" organisation we were focused on a solution that would be readily accepted by the upstream project. This entailed doing our development in the open on the project mailing lists where early feedback and community consensus can be reached.
---------------------------------------------------
★ Resources ★
Event Page: http://connect.linaro.org/resource/hkg18/hkg18-tr08/
Presentation: http://connect.linaro.org.s3.amazonaws.com/hkg18/presentations/hkg18-tr08.pdf
Video: http://connect.linaro.org.s3.amazonaws.com/hkg18/videos/hkg18-tr08.mp4
---------------------------------------------------
★ Event Details ★
Linaro Connect Hong Kong 2018 (HKG18)
19-23 March 2018
Regal Airport Hotel Hong Kong
---------------------------------------------------
Keyword: Enterprise
'http://www.linaro.org'
'http://connect.linaro.org'
---------------------------------------------------
Follow us on Social Media
https://www.facebook.com/LinaroOrg
https://www.youtube.com/user/linaroorg?sub_confirmation=1
https://www.linkedin.com/company/1026961"
HKG18-113- Secure Data Path work with i.MX8MLinaro
"Session ID: HKG18-113
Session Name: HKG18-113 - Secure Data Path work with i.MX8M
Speaker: Cyrille Fleury
Track: Digital Home
★ Session Summary ★
NXP presentation on Secure Data Path work with i.MX8M Soc. Demonstrate 4K PlayReady playback with Android 8.1 running on i.MX8M. Focus on security (MS SL3000 and Widevine level 1)
---------------------------------------------------
★ Resources ★
Event Page: http://connect.linaro.org/resource/hkg18/hkg18-113/
Presentation: http://connect.linaro.org.s3.amazonaws.com/hkg18/presentations/hkg18-113.pdf
Video: http://connect.linaro.org.s3.amazonaws.com/hkg18/videos/hkg18-113.mp4
---------------------------------------------------
★ Event Details ★
Linaro Connect Hong Kong 2018 (HKG18)
19-23 March 2018
Regal Airport Hotel Hong Kong
---------------------------------------------------
Keyword: Digital Home
'http://www.linaro.org'
'http://connect.linaro.org'
---------------------------------------------------
Follow us on Social Media
https://www.facebook.com/LinaroOrg
https://www.youtube.com/user/linaroorg?sub_confirmation=1
https://www.linkedin.com/company/1026961"
HKG18-120 - Devicetree Schema Documentation and Validation Linaro
"Session ID: HKG18-120
Session Name: HKG18-120 - Structured Documentation and Validation for Device Tree
Speaker: Grant Likely
Track: Kernel
★ Session Summary ★
Devicetree has become the dominant hardware configuration language used when building embedded systems. Projects using Devicetree now include Linux, U-Boot, Android, FreeBSD, and Zephyr. However, it is notoriously difficult to write correct Devicetree data files. The dtc tools perform limited tests for valid data, and there there is not yet a way to add validity test for specific hardware descriptions. Neither is there a good way to document requirements for specific bindings. Work is underway to solve these problems. This session will present a proposal for adding Devicetree schema files to the Devicetree toolchain that can be used to both validate data and produce usable documentation.
---------------------------------------------------
★ Resources ★
Event Page: http://connect.linaro.org/resource/hkg18/hkg18-120/
Presentation: http://connect.linaro.org.s3.amazonaws.com/hkg18/presentations/hkg18-120.pdf
Video: http://connect.linaro.org.s3.amazonaws.com/hkg18/videos/hkg18-120.mp4
---------------------------------------------------
★ Event Details ★
Linaro Connect Hong Kong 2018 (HKG18)
19-23 March 2018
Regal Airport Hotel Hong Kong
---------------------------------------------------
Keyword: Kernel
'http://www.linaro.org'
'http://connect.linaro.org'
---------------------------------------------------
Follow us on Social Media
https://www.facebook.com/LinaroOrg
https://www.youtube.com/user/linaroorg?sub_confirmation=1
https://www.linkedin.com/company/1026961"
"Session ID: HKG18-223
Session Name: HKG18-223 - Trusted Firmware M : Trusted Boot
Speaker: Tamas Ban
Track: LITE
★ Session Summary ★
An overview of the trusted boot concept and firmware update on the ARMv8-M based platform and how MCUBoot acts as a BL2 bootloader for TF-M.
Trusted Firmware M
In October 2017, Arm announced the vision of Platform Security Architecture (PSA) - a common framework to allow everyone in the IoT ecosystem to move forward with stronger, scalable security and greater confidence. There are three key stages to the Platform Security Architecture: Analysis, Architecture and Implementation which are described at https://developer.arm.com/products/architecture/platform-security-architecture.
_Trusted Firmware M, i.e. TF-M, is the Arm project to provide an open source reference implementation firmware that will conform to the PSA specification for M-Class devices. Early access to TF-M was released in December 2017 and it is being made public during Linaro Connect. The implementation should be considered a prototype until the PSA specifications reach release state and the code aligns._
---------------------------------------------------
★ Resources ★
Event Page: http://connect.linaro.org/resource/hkg18/hkg18-223/
Presentation: http://connect.linaro.org.s3.amazonaws.com/hkg18/presentations/hkg18-223.pdf
Video: http://connect.linaro.org.s3.amazonaws.com/hkg18/videos/hkg18-223.mp4
---------------------------------------------------
★ Event Details ★
Linaro Connect Hong Kong 2018 (HKG18)
19-23 March 2018
Regal Airport Hotel Hong Kong
---------------------------------------------------
Keyword: LITE
'http://www.linaro.org'
'http://connect.linaro.org'
---------------------------------------------------
Follow us on Social Media
https://www.facebook.com/LinaroOrg
https://www.youtube.com/user/linaroorg?sub_confirmation=1
https://www.linkedin.com/company/1026961"
The Art of the Pitch: WordPress Relationships and SalesLaura Byrne
Clients don’t know what they don’t know. What web solutions are right for them? How does WordPress come into the picture? How do you make sure you understand scope and timeline? What do you do if sometime changes?
All these questions and more will be explored as we talk about matching clients’ needs with what your agency offers without pulling teeth or pulling your hair out. Practical tips, and strategies for successful relationship building that leads to closing the deal.
LF Energy Webinar: Electrical Grid Modelling and Simulation Through PowSyBl -...DanBrown980551
Do you want to learn how to model and simulate an electrical network from scratch in under an hour?
Then welcome to this PowSyBl workshop, hosted by Rte, the French Transmission System Operator (TSO)!
During the webinar, you will discover the PowSyBl ecosystem as well as handle and study an electrical network through an interactive Python notebook.
PowSyBl is an open source project hosted by LF Energy, which offers a comprehensive set of features for electrical grid modelling and simulation. Among other advanced features, PowSyBl provides:
- A fully editable and extendable library for grid component modelling;
- Visualization tools to display your network;
- Grid simulation tools, such as power flows, security analyses (with or without remedial actions) and sensitivity analyses;
The framework is mostly written in Java, with a Python binding so that Python developers can access PowSyBl functionalities as well.
What you will learn during the webinar:
- For beginners: discover PowSyBl's functionalities through a quick general presentation and the notebook, without needing any expert coding skills;
- For advanced developers: master the skills to efficiently apply PowSyBl functionalities to your real-world scenarios.
Kubernetes & AI - Beauty and the Beast !?! @KCD Istanbul 2024Tobias Schneck
As AI technology is pushing into IT I was wondering myself, as an “infrastructure container kubernetes guy”, how get this fancy AI technology get managed from an infrastructure operational view? Is it possible to apply our lovely cloud native principals as well? What benefit’s both technologies could bring to each other?
Let me take this questions and provide you a short journey through existing deployment models and use cases for AI software. On practical examples, we discuss what cloud/on-premise strategy we may need for applying it to our own infrastructure to get it to work from an enterprise perspective. I want to give an overview about infrastructure requirements and technologies, what could be beneficial or limiting your AI use cases in an enterprise environment. An interactive Demo will give you some insides, what approaches I got already working for real.
Search and Society: Reimagining Information Access for Radical FuturesBhaskar Mitra
The field of Information retrieval (IR) is currently undergoing a transformative shift, at least partly due to the emerging applications of generative AI to information access. In this talk, we will deliberate on the sociotechnical implications of generative AI for information access. We will argue that there is both a critical necessity and an exciting opportunity for the IR community to re-center our research agendas on societal needs while dismantling the artificial separation between the work on fairness, accountability, transparency, and ethics in IR and the rest of IR research. Instead of adopting a reactionary strategy of trying to mitigate potential social harms from emerging technologies, the community should aim to proactively set the research agenda for the kinds of systems we should build inspired by diverse explicitly stated sociotechnical imaginaries. The sociotechnical imaginaries that underpin the design and development of information access technologies needs to be explicitly articulated, and we need to develop theories of change in context of these diverse perspectives. Our guiding future imaginaries must be informed by other academic fields, such as democratic theory and critical theory, and should be co-developed with social science scholars, legal scholars, civil rights and social justice activists, and artists, among others.
Transcript: Selling digital books in 2024: Insights from industry leaders - T...BookNet Canada
The publishing industry has been selling digital audiobooks and ebooks for over a decade and has found its groove. What’s changed? What has stayed the same? Where do we go from here? Join a group of leading sales peers from across the industry for a conversation about the lessons learned since the popularization of digital books, best practices, digital book supply chain management, and more.
Link to video recording: https://bnctechforum.ca/sessions/selling-digital-books-in-2024-insights-from-industry-leaders/
Presented by BookNet Canada on May 28, 2024, with support from the Department of Canadian Heritage.
Dev Dives: Train smarter, not harder – active learning and UiPath LLMs for do...UiPathCommunity
💥 Speed, accuracy, and scaling – discover the superpowers of GenAI in action with UiPath Document Understanding and Communications Mining™:
See how to accelerate model training and optimize model performance with active learning
Learn about the latest enhancements to out-of-the-box document processing – with little to no training required
Get an exclusive demo of the new family of UiPath LLMs – GenAI models specialized for processing different types of documents and messages
This is a hands-on session specifically designed for automation developers and AI enthusiasts seeking to enhance their knowledge in leveraging the latest intelligent document processing capabilities offered by UiPath.
Speakers:
👨🏫 Andras Palfi, Senior Product Manager, UiPath
👩🏫 Lenka Dulovicova, Product Program Manager, UiPath
Key Trends Shaping the Future of Infrastructure.pdfCheryl Hung
Keynote at DIGIT West Expo, Glasgow on 29 May 2024.
Cheryl Hung, ochery.com
Sr Director, Infrastructure Ecosystem, Arm.
The key trends across hardware, cloud and open-source; exploring how these areas are likely to mature and develop over the short and long-term, and then considering how organisations can position themselves to adapt and thrive.
Accelerate your Kubernetes clusters with Varnish CachingThijs Feryn
A presentation about the usage and availability of Varnish on Kubernetes. This talk explores the capabilities of Varnish caching and shows how to use the Varnish Helm chart to deploy it to Kubernetes.
This presentation was delivered at K8SUG Singapore. See https://feryn.eu/presentations/accelerate-your-kubernetes-clusters-with-varnish-caching-k8sug-singapore-28-2024 for more details.
State of ICS and IoT Cyber Threat Landscape Report 2024 previewPrayukth K V
The IoT and OT threat landscape report has been prepared by the Threat Research Team at Sectrio using data from Sectrio, cyber threat intelligence farming facilities spread across over 85 cities around the world. In addition, Sectrio also runs AI-based advanced threat and payload engagement facilities that serve as sinks to attract and engage sophisticated threat actors, and newer malware including new variants and latent threats that are at an earlier stage of development.
The latest edition of the OT/ICS and IoT security Threat Landscape Report 2024 also covers:
State of global ICS asset and network exposure
Sectoral targets and attacks as well as the cost of ransom
Global APT activity, AI usage, actor and tactic profiles, and implications
Rise in volumes of AI-powered cyberattacks
Major cyber events in 2024
Malware and malicious payload trends
Cyberattack types and targets
Vulnerability exploit attempts on CVEs
Attacks on counties – USA
Expansion of bot farms – how, where, and why
In-depth analysis of the cyber threat landscape across North America, South America, Europe, APAC, and the Middle East
Why are attacks on smart factories rising?
Cyber risk predictions
Axis of attacks – Europe
Systemic attacks in the Middle East
Download the full report from here:
https://sectrio.com/resources/ot-threat-landscape-reports/sectrio-releases-ot-ics-and-iot-security-threat-landscape-report-2024/
Software Delivery At the Speed of AI: Inflectra Invests In AI-Powered QualityInflectra
In this insightful webinar, Inflectra explores how artificial intelligence (AI) is transforming software development and testing. Discover how AI-powered tools are revolutionizing every stage of the software development lifecycle (SDLC), from design and prototyping to testing, deployment, and monitoring.
Learn about:
• The Future of Testing: How AI is shifting testing towards verification, analysis, and higher-level skills, while reducing repetitive tasks.
• Test Automation: How AI-powered test case generation, optimization, and self-healing tests are making testing more efficient and effective.
• Visual Testing: Explore the emerging capabilities of AI in visual testing and how it's set to revolutionize UI verification.
• Inflectra's AI Solutions: See demonstrations of Inflectra's cutting-edge AI tools like the ChatGPT plugin and Azure Open AI platform, designed to streamline your testing process.
Whether you're a developer, tester, or QA professional, this webinar will give you valuable insights into how AI is shaping the future of software delivery.
Connector Corner: Automate dynamic content and events by pushing a buttonDianaGray10
Here is something new! In our next Connector Corner webinar, we will demonstrate how you can use a single workflow to:
Create a campaign using Mailchimp with merge tags/fields
Send an interactive Slack channel message (using buttons)
Have the message received by managers and peers along with a test email for review
But there’s more:
In a second workflow supporting the same use case, you’ll see:
Your campaign sent to target colleagues for approval
If the “Approve” button is clicked, a Jira/Zendesk ticket is created for the marketing design team
But—if the “Reject” button is pushed, colleagues will be alerted via Slack message
Join us to learn more about this new, human-in-the-loop capability, brought to you by Integration Service connectors.
And...
Speakers:
Akshay Agnihotri, Product Manager
Charlie Greenberg, Host
UiPath Test Automation using UiPath Test Suite series, part 4DianaGray10
Welcome to UiPath Test Automation using UiPath Test Suite series part 4. In this session, we will cover Test Manager overview along with SAP heatmap.
The UiPath Test Manager overview with SAP heatmap webinar offers a concise yet comprehensive exploration of the role of a Test Manager within SAP environments, coupled with the utilization of heatmaps for effective testing strategies.
Participants will gain insights into the responsibilities, challenges, and best practices associated with test management in SAP projects. Additionally, the webinar delves into the significance of heatmaps as a visual aid for identifying testing priorities, areas of risk, and resource allocation within SAP landscapes. Through this session, attendees can expect to enhance their understanding of test management principles while learning practical approaches to optimize testing processes in SAP environments using heatmap visualization techniques
What will you get from this session?
1. Insights into SAP testing best practices
2. Heatmap utilization for testing
3. Optimization of testing processes
4. Demo
Topics covered:
Execution from the test manager
Orchestrator execution result
Defect reporting
SAP heatmap example with demo
Speaker:
Deepak Rai, Automation Practice Lead, Boundaryless Group and UiPath MVP
DevOps and Testing slides at DASA ConnectKari Kakkonen
My and Rik Marselis slides at 30.5.2024 DASA Connect conference. We discuss about what is testing, then what is agile testing and finally what is Testing in DevOps. Finally we had lovely workshop with the participants trying to find out different ways to think about quality and testing in different parts of the DevOps infinity loop.
PHP Frameworks: I want to break free (IPC Berlin 2024)Ralf Eggert
In this presentation, we examine the challenges and limitations of relying too heavily on PHP frameworks in web development. We discuss the history of PHP and its frameworks to understand how this dependence has evolved. The focus will be on providing concrete tips and strategies to reduce reliance on these frameworks, based on real-world examples and practical considerations. The goal is to equip developers with the skills and knowledge to create more flexible and future-proof web applications. We'll explore the importance of maintaining autonomy in a rapidly changing tech landscape and how to make informed decisions in PHP development.
This talk is aimed at encouraging a more independent approach to using PHP frameworks, moving towards a more flexible and future-proof approach to PHP development.
2. 2
Aims for today
Inform
the status of open source software for ARMv8‟s 64-bit execution state
Plan
the next quarter‟s work in Linaro (blueprints, requirements)
CI loop for 64-bit tools (gcc 4.7 etc.)
CI loop for 64-bit kernel
LAMP stack based on open embedded
Coordinate
kernel activities for 32- and 64-bit architectures and platforms
64-bit bring-up of distributions
Enable
the wider development community
3. 3
ARMv8 Timeline
2007 ARM begins design of 64-bit Architecture
2009 ARM begins software development of 64-bit tools and kernel
Oct 2011 ARM announces ARMv8 at ARM TechCon 2011
Mar 2012 ARM & Linaro start planning of ARMv8 software rollout
Jun – Sep 2012 ARM & Linaro publish initial patches of tools and kernel
Sep 2012 Linaro bootstraps toolchain, kernel and OE stack from public
source code
Oct 2012 ... and publishes: http://www.linaro.org/engineering/armv8
ARM provides a free ARMv8 processor „Foundation‟ model
2013 First silicon
2014 First products
4. 4
AArch64 upstream software status
Target
Version
Public/
Upstream
Notes
Linux kernel 3.7 Upstream Maintainer: Catalin Marinas
Versatile
Express „soc‟
- Published In Catalin‟s kernel.org git tree
gcc 4.8 Upstream Co-maintainers: Richard Earnshaw
and Marcus Shawcroft
binutils 2.23 Upstream
newlib, libgloss 1.21 Upstream
glibc 2.17 Published Patches on public mailing lists
gdb 7.6 Published Patches on public mailing lists
libffi ? Published Patches on public mailing lists
strace ? Upstream
UEFI 2.3.x Q1‟2013 In development
5. 5
Agenda
Session 1: 09:00 – 09:55
arch/arm64 Linux Kernel
Session 2: 10:00 – 10:45
Kernel cont’d
Booting and Firmware for AArch64
Session 3: 11:00 – 11:55
AArch64 GNU Toolchain
AArch64 Developer Tools
Session 4: 12:00 – 13:00
AArch64 Distributions and Community
7. 7
A64 Development Process
Work started in 2007
Probably the best researched ARM ISA
ISA and ABI prototyped in GCC and profiled on emulator
Prototype CPU designed in parallel with ISA as it stabilised
Further refined with help from lead architecture partners
announced and unannounced
8. 8
A64 Goals
High-end "A-class" processors only
Increase directly addressable physical and virtual memory for
both kernel and user code
Higher performance not a primary requirement
Static code size not a primary requirement
Focus on dynamic code size / instruction count in inner loops
Accept more instructions (larger code) in less executed areas
Reducing power consumption is also key for ARM
9. 9
Tweak or Clean Sheet?
Large, flat virtual address space implies 64-bit registers and
LP64 data model
New register size & data model means a new ABI
Not going to be using legacy assembly code
So a "clean sheet" ISA design would be possible
But a 64-bit CPU must be an excellent 32-bit ARM CPU
Continue the ISA rationalisation begun by 32-bit Thumb
Legacy break means opportunity for removing “cruft”
10. 10
Better use of Processor Resources
ARMv7's execution modes with register banking means it has
31 general registers
But only 14 (excluding SP & PC) allocatable by compiler
Benchmarking shows significant benefit from exposing all
R0 R1 R2 R3 R4 R5 R6 R7
R8 R9 R10 R11 R12 R13/SP R14/LR SP_hyp
LR_irq SP_irq LR_svc SP_svc LR_abt SP_abt LR_und SP_und
R8_fiq R9_fiq R10_fiq R11_fiq R12_fiq SP_fiq LR_fiq
X0 X1 X2 X3 X4 X5 X6 X7
X8 X9 X10 X11 X12 X13 X14 X15
X16 X17 X18 X19 X20 X21 X22 X23
X24 X25 X26 X27 X28 X29 X30/LR SP/ZERO
11. 11
Avoiding CPU Pinch Points
The ARM ISA was designed for simple pipeline
In1999 ARM7 had a 3-stage pipeline @ 40 MHz
For comparison 1999 MIPS RM7000 ran @ 250 MHz
A modern ARM CPU has complex ~15-stage pipe @ ~2 GHz
Instruction set which works for leisurely 1999 pipeline is
problematic for 2012 version, e.g.:
Predicated or conditional execution
Load/Store Multiple
Widespread access to PC (R15)
All register shifts on every arithmetic instruction
Arithmetic not updating all condition flags
Access to whole process state (CPSR and FPSCR)
Packed VFP / AdvSIMD registers
12. 12
But Look What We’ve Gained
Optimised for modern OS platforms, languages, JITs & MP
Cleaner, more efficient ISA encoding
More useful immediate encodings
Larger PC-relative branch displacements
Vast inline PC-relative addressing
Unaligned addresses (almost) everywhere
32 or 64-bit index register
IEEE754-2008 operations
Advanced SIMD usable for general-purpose floating point
Load-acquire and Store-release
Automatic “wakeup” events
User-level cache ops
Non-temporal load, store and prefetch
13. 13
Doesn’t it look a bit like MIPS?
I couldn't possibly comment
It has lost some idiosyncratic ARM features
What remains is more like a "conventional" RISC ISA
So similar to MIPS, Alpha, PowerPC, HP-PA which all follow the
same line of descent from Stanford RISC
But clearly still an ARM instruction set
I hope you enjoy programming with it!