This document provides instructions for running a Qemu virtual machine emulating a Raspberry Pi using a chroot jail. It explains that Qemu can emulate CPUs through dynamic binary translation and run unmodified guest operating systems. It then provides steps to compile Qemu for ARM emulation, download a Raspbian image, mount it read-write in Qemu, enlarge the disk size, create a chroot jail within the virtual disk, and test that the chroot jail is running like a real Raspberry Pi system.
Using old x86 hardware or QEMU to take control of CPU after Hard Reset. Overview of commonly used boot loaders , Preparing a custom message bootable USB stick and demo on x86-uboot with QEMU . It is discussed at
https://youtu.be/F71LGSrj9cc
blog: www.embedkari.com
Embedded Career: www.facebook.com/embedkari
redis-benchmark with AMD RYZEN 1800X Intel Kaby Lake (i7-7700K) memoNaoto MATSUMOTO
redis-benchmark with AMD RYZEN 1800X Intel Kaby Lake (i7-7700K) memo
SAKURA Internet, Inc.
SAKURA Internet Research Center.
Senior Researcher / Naoto MATSUMOTO
(2017/05/12)
Using old x86 hardware or QEMU to take control of CPU after Hard Reset. Overview of commonly used boot loaders , Preparing a custom message bootable USB stick and demo on x86-uboot with QEMU . It is discussed at
https://youtu.be/F71LGSrj9cc
blog: www.embedkari.com
Embedded Career: www.facebook.com/embedkari
redis-benchmark with AMD RYZEN 1800X Intel Kaby Lake (i7-7700K) memoNaoto MATSUMOTO
redis-benchmark with AMD RYZEN 1800X Intel Kaby Lake (i7-7700K) memo
SAKURA Internet, Inc.
SAKURA Internet Research Center.
Senior Researcher / Naoto MATSUMOTO
(2017/05/12)
The internal battle has been fought, and Cassandra is your group's NoSQL platform of choice! Hooray! But now what? Wouldn't it be great to know what NOT to do? Come to this talk to hear about some of the common Ops mistakes that new users make and what the better decision will be.
The internal battle has been fought, and Cassandra is your group's NoSQL platform of choice! Hooray! But now what? Wouldn't it be great to know what NOT to do? Come to this talk to hear about some of the common Ops mistakes that new users make and what the better decision will be.
Kernel Recipes 2015 - Kernel dump analysisAnne Nicolas
Kernel dump analysis
Cloud this, cloud that…It’s making everything easier, especially for web hosted services. But what about the servers that are not supposed to crash ? For applications making the assumption the OS won’t do any fault or go down, what can you write in your post-mortem once the server froze and has been restarted ? How to track down the bug that lead to service unavailability ?
In this talk, we’ll see how to setup kdump and how to panic a server to generate a coredump. Once you have the vmcore file, how to track the issue with “crash” tool to find why your OS went down. Last but not least : with “crash” you can also modify your live kernel, the same way you would do with gdb.
Adrien Mahieux – System administrator obsessed with performance and uptime, tracking down microseconds from hardware to software since 2011. The application must be seen as a whole to provide efficiently the requested service. This includes searching for bottlenecks and tradeoffs, design issues or hardware optimization.
Cumulus Linux supports great networking, what’s next? Matt Peterson (@dorkmatt) our resident expert from the office of the CTO shares his previous experience, his views on devops, and how Cumulus Networks makes it easier to manage networks with ONIE, ZTP and no CLI! “Devops is a lifestyle, shared responsibility”. With Linux as the networks OS, “it’s all just one apt-get away!”
Linux Tracing Superpowers by Eugene PirogovPivorak MeetUp
For a long time Linux was far behind operating systems of Unix family from the perspective of debuggability, specifically in a live production systems.
However, over the course of 2016 Linux saw a series of patches that brought it on par with Unix world: an old Linux tool called BPF has risen and extended into powerful new one – eBPF. Some say that eBPF marks the begining of true DTrace for Linux.
During the presentation I'm going to talk about tracing basics, cover a series of events that led to the development of eBPF and will compare eBPF with DTrace from Unix world. Current state of affairs of Linux tracing tools will be explored. Finally, together we'll look at some of the exciting examples of eBPF application.
***
Eugene is well known in our Ruby (and Elixir) communities. Last time when he was at #pivorak he made a very light and interesting intro to the Elixir. You can check his speech out here - http://bit.ly/2evCd9R
How to Burn Multi-GPUs using CUDA stress test memoNaoto MATSUMOTO
How to Burn Multi-GPUs using CUDA stress test memo (2017/05/20)
SAKURA Internet, Inc. / SAKURA Internet Research Center.
Senior Researcher / Naoto MATSUMOTO
Docker Practice for beginner.
- docker install on ubuntu 18.04 LTS
- docker pull/push
- making docker-compose file which serving spring-boot+ mySql application
qemu + gdb: The efficient way to understand/debug Linux kernel code/data stru...Adrian Huang
Note: When you view the the slide deck via web browser, the screenshots may be blurred. You can download and view them offline (Screenshots are clear).
Similar to Qemu - Raspberry | while42 Singapore #2 (20)
Talk given by Rudy for while42 SF #18 @LinkedIn with FWD.us and ESCEN school.
Pictures here: https://www.flickr.com/photos/sylvainkalache/sets/72157650382332309
Video here: https://www.youtube.com/watch?v=fvXEn06zD_o&feature=em-upload_owner
Nicolas Sadirac and Florian Bucher came right from Paris to attend the 2 years of while42 birthday in San Francisco. Nicolas introduced 42 to our guests.
42 is a private French computer programming school created and funded by Xavier Niel (Founder of Illiad) with several partners including Nicolas Sadirac (previous General Director of Epitech),[1] Kwame Yamgnane and Florian Bucher (previous executives of Epitech).[2]
La Silicon Valley vue par Camille DespringhereWhile42
Les Français qui tentent leur chance dans la Silicon Valley, eldorado de la startup technologique, sont légion. C’est le cas de Camille Despringhere, qui a abandonné Québec, sa ville d’adoption, pour s’installer à Palo Alto. Il est aujourd’hui à la tête de While42 Palo Alto, un réseau d’ingénieurs en informatique français.
UiPath Test Automation using UiPath Test Suite series, part 3DianaGray10
Welcome to UiPath Test Automation using UiPath Test Suite series part 3. In this session, we will cover desktop automation along with UI automation.
Topics covered:
UI automation Introduction,
UI automation Sample
Desktop automation flow
Pradeep Chinnala, Senior Consultant Automation Developer @WonderBotz and UiPath MVP
Deepak Rai, Automation Practice Lead, Boundaryless Group and UiPath MVP
GraphRAG is All You need? LLM & Knowledge GraphGuy Korland
Guy Korland, CEO and Co-founder of FalkorDB, will review two articles on the integration of language models with knowledge graphs.
1. Unifying Large Language Models and Knowledge Graphs: A Roadmap.
https://arxiv.org/abs/2306.08302
2. Microsoft Research's GraphRAG paper and a review paper on various uses of knowledge graphs:
https://www.microsoft.com/en-us/research/blog/graphrag-unlocking-llm-discovery-on-narrative-private-data/
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.
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
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.
Epistemic Interaction - tuning interfaces to provide information for AI supportAlan Dix
Paper presented at SYNERGY workshop at AVI 2024, Genoa, Italy. 3rd June 2024
https://alandix.com/academic/papers/synergy2024-epistemic/
As machine learning integrates deeper into human-computer interactions, the concept of epistemic interaction emerges, aiming to refine these interactions to enhance system adaptability. This approach encourages minor, intentional adjustments in user behaviour to enrich the data available for system learning. This paper introduces epistemic interaction within the context of human-system communication, illustrating how deliberate interaction design can improve system understanding and adaptation. Through concrete examples, we demonstrate the potential of epistemic interaction to significantly advance human-computer interaction by leveraging intuitive human communication strategies to inform system design and functionality, offering a novel pathway for enriching user-system engagements.
Slack (or Teams) Automation for Bonterra Impact Management (fka Social Soluti...Jeffrey Haguewood
Sidekick Solutions uses Bonterra Impact Management (fka Social Solutions Apricot) and automation solutions to integrate data for business workflows.
We believe integration and automation are essential to user experience and the promise of efficient work through technology. Automation is the critical ingredient to realizing that full vision. We develop integration products and services for Bonterra Case Management software to support the deployment of automations for a variety of use cases.
This video focuses on the notifications, alerts, and approval requests using Slack for Bonterra Impact Management. The solutions covered in this webinar can also be deployed for Microsoft Teams.
Interested in deploying notification automations for Bonterra Impact Management? Contact us at sales@sidekicksolutionsllc.com to discuss next steps.
Essentials of Automations: Optimizing FME Workflows with ParametersSafe Software
Are you looking to streamline your workflows and boost your projects’ efficiency? Do you find yourself searching for ways to add flexibility and control over your FME workflows? If so, you’re in the right place.
Join us for an insightful dive into the world of FME parameters, a critical element in optimizing workflow efficiency. This webinar marks the beginning of our three-part “Essentials of Automation” series. This first webinar is designed to equip you with the knowledge and skills to utilize parameters effectively: enhancing the flexibility, maintainability, and user control of your FME projects.
Here’s what you’ll gain:
- Essentials of FME Parameters: Understand the pivotal role of parameters, including Reader/Writer, Transformer, User, and FME Flow categories. Discover how they are the key to unlocking automation and optimization within your workflows.
- Practical Applications in FME Form: Delve into key user parameter types including choice, connections, and file URLs. Allow users to control how a workflow runs, making your workflows more reusable. Learn to import values and deliver the best user experience for your workflows while enhancing accuracy.
- Optimization Strategies in FME Flow: Explore the creation and strategic deployment of parameters in FME Flow, including the use of deployment and geometry parameters, to maximize workflow efficiency.
- Pro Tips for Success: Gain insights on parameterizing connections and leveraging new features like Conditional Visibility for clarity and simplicity.
We’ll wrap up with a glimpse into future webinars, followed by a Q&A session to address your specific questions surrounding this topic.
Don’t miss this opportunity to elevate your FME expertise and drive your projects to new heights of efficiency.
GDG Cloud Southlake #33: Boule & Rebala: Effective AppSec in SDLC using Deplo...James Anderson
Effective Application Security in Software Delivery lifecycle using Deployment Firewall and DBOM
The modern software delivery process (or the CI/CD process) includes many tools, distributed teams, open-source code, and cloud platforms. Constant focus on speed to release software to market, along with the traditional slow and manual security checks has caused gaps in continuous security as an important piece in the software supply chain. Today organizations feel more susceptible to external and internal cyber threats due to the vast attack surface in their applications supply chain and the lack of end-to-end governance and risk management.
The software team must secure its software delivery process to avoid vulnerability and security breaches. This needs to be achieved with existing tool chains and without extensive rework of the delivery processes. This talk will present strategies and techniques for providing visibility into the true risk of the existing vulnerabilities, preventing the introduction of security issues in the software, resolving vulnerabilities in production environments quickly, and capturing the deployment bill of materials (DBOM).
Speakers:
Bob Boule
Robert Boule is a technology enthusiast with PASSION for technology and making things work along with a knack for helping others understand how things work. He comes with around 20 years of solution engineering experience in application security, software continuous delivery, and SaaS platforms. He is known for his dynamic presentations in CI/CD and application security integrated in software delivery lifecycle.
Gopinath Rebala
Gopinath Rebala is the CTO of OpsMx, where he has overall responsibility for the machine learning and data processing architectures for Secure Software Delivery. Gopi also has a strong connection with our customers, leading design and architecture for strategic implementations. Gopi is a frequent speaker and well-known leader in continuous delivery and integrating security into software delivery.
Builder.ai Founder Sachin Dev Duggal's Strategic Approach to Create an Innova...Ramesh Iyer
In today's fast-changing business world, Companies that adapt and embrace new ideas often need help to keep up with the competition. However, fostering a culture of innovation takes much work. It takes vision, leadership and willingness to take risks in the right proportion. Sachin Dev Duggal, co-founder of Builder.ai, has perfected the art of this balance, creating a company culture where creativity and growth are nurtured at each stage.
3. QEMU is a hosted virtual machine
monitor: It emulates central processing
units through dynamic binary translation
and provides a set of device models,
enabling it to run a variety of unmodified
guest operating systems.
11. Preparation
●
●
Download the latest version of Raspbian (link)
Download the linux kernel for Qemu (link)
# qemu-system -kernel kernel-qemu -cpu arm1176 -M versatilepb -no-reboot -append
"root=/dev/sda2 panic=0 ro single" -hda XXXXX-raspbian.img
# mount / -o remount,rw
●
●
Edit fstab and change mmcblk0p1 and mmcblk0p2 to sda1
and sda2 respectively
Create /etc/udev/rules.d/90-qemu.rules
KERNEL=="sda", SYMLINK+="mmcblk0"
KERNEL=="sda?", SYMLINK+="mmcblk0p%n",
●
Comment everything in /etc/ld.so.preload
12. Enlarge it!
# cp XXXXX-raspbian.img raspbian.img
# qemu-img resize raspbian.img +6G
# qemu-system -kernel kernel-qemu -cpu arm1176 -M versatilepb -no-reboot -append "root=/dev/sda2 panic=1"
-hda XXXXX-raspbian.img -hdb raspbian.img
# sudo cfdisk /dev/sdb
●Delete the second partition and create a new partition with all space
# sudo resize2fs /dev/sdb2
# sudo fsck -f /dev/sdb2
# sudo halt
# qemu-system -kernel kernel-qemu -cpu arm1176 -M versatilepb -no-reboot -append "root=/dev/sda2 panic=1"
-hda raspbian.img
13. Chroot it
# sudo kpartx -a -v 2012-12-16-wheezy-raspbian.img
add map loop0p1 (252:8): 0 114688 linear /dev/loop0 8192
add map loop0p2 (252:9): 0 5763072 linear /dev/loop0 122880
# sudo mount /dev/mapper/loop0p2 /mnt/temp# sudo mount -o bind /dev /mnt/temp/dev
# sudo mount -o bind /proc /mnt/temp/proc
# sudo mount -o bind /sys /mnt/temp/sys
Don’t forget to copy the qemu-arm binary to the image
# sudo cp /usr/bin/qemu-arm /mnt/temp/usr/bin
# cat /usr/share/binfmts/qemu-arm
package qemu-user-static
interpreter /usr/bin/qemu-arm-static
credentials yes
offset 0
magic x7fELFx01x01x01x00x00x00x00x00x00x00x00x00x02x00x28x00
mask xffxffxffxffxffxffxffx00xffxffxffxffxffxffxffxffxfexffxffxff
Run sudo update-binfmts --import qemu-arm two times (yes, two times)
14. And we are good to go
Now, you should be able to chroot
# sudo chroot /mnt/temp
Let’s check if it’s working
# uname -a
Linux localhost 2.6.32 #58-Ubuntu SMP Thu Jan 24 15:28:10 UTC 2013 armv7l GNU/Linux