This document provides an overview of a data structures revision tutorial. It discusses why data structures are needed, as computers take on more complex tasks and software implementation is difficult without an organized conceptual framework. The tutorial will cover common data structures, how to implement and analyze their efficiency, and how to use them to solve practical problems. It requires programming experience in C/C++ and some Java experience. Topics will include arrays, stacks, queues, trees, hashing, sorting, and graphs. The problem solving process involves defining the problem, designing algorithms, analyzing algorithms, implementing solutions, testing, and maintaining code.
Galois: A System for Parallel Execution of Irregular AlgorithmsDonald Nguyen
A programming model which allows users to program with high productivity and which produces high performance executions has been a goal for decades. This dissertation makes progress towards this elusive goal by describing the design and implementation of the Galois system, a parallel programming model for shared-memory, multicore machines. Central to the design is the idea that scheduling of a program can be decoupled from the core computational operator and data structures. However, efficient programs often require application- specific scheduling to achieve best performance. To bridge this gap, an extensible and abstract scheduling policy language is proposed, which allows programmers to focus on selecting high-level scheduling policies while delegating the tedious task of implementing the policy to a scheduler synthesizer and runtime system. Implementations of deterministic and prioritized scheduling also are described.
An evaluation of a well-studied benchmark suite reveals that factoring programs into operators, schedulers and data structures can produce significant performance improvements over unfactored approaches. Comparison of the Galois system with existing programming models for graph analytics shows significant performance improvements, often orders of magnitude more, due to (1) better support for the restrictive programming models of existing systems and (2) better support for more sophisticated algorithms and scheduling, which cannot be expressed in other systems.
The growing size of software models poses significant scalability challenges. Amongst these scalability issues is the execution time of queries and transformations. Although the processing pipeline for models may involve numerous stages such as validation, transformation and code generation, many of these complex processes are (or can be) expressed by a combination of simpler and more fundamental operations. In many cases, these underlying operations are pure functions, making them amenable to parallelisation. We present parallel execution algorithms for a range of iteration-based operations in the context of the OCL-inspired Epsilon Object Language. Our experiments show a significant improvement in the performance of queries on large models.
Distributed Model Validation with EpsilonSina Madani
Scalable performance is a major challenge with current model management tools. As the size and complexity of models and model management programs increases and the cost of computing falls, one solution for improving performance of model management programs is to perform computations on multiple computers. The developed prototype demonstrates a low-overhead data-parallel approach for distributed model validation in the context of an OCL-like language. The approach minimises communication costs by exploiting the deterministic structure of programs and can take advantage of multiple cores on each (heterogenous) machine with highly configurable computational granularity. Performance evaluation shows linear improvements with more machines and processor cores, being up to 340x faster than the baseline sequential program with 88 computers.
This talk was given at the ACS meeting in San Francisco 2017. It provides background and examples of using a powerful combination of software and hardware to repair & revive instuments, and to create other measurement systems easily and economically.
Galois: A System for Parallel Execution of Irregular AlgorithmsDonald Nguyen
A programming model which allows users to program with high productivity and which produces high performance executions has been a goal for decades. This dissertation makes progress towards this elusive goal by describing the design and implementation of the Galois system, a parallel programming model for shared-memory, multicore machines. Central to the design is the idea that scheduling of a program can be decoupled from the core computational operator and data structures. However, efficient programs often require application- specific scheduling to achieve best performance. To bridge this gap, an extensible and abstract scheduling policy language is proposed, which allows programmers to focus on selecting high-level scheduling policies while delegating the tedious task of implementing the policy to a scheduler synthesizer and runtime system. Implementations of deterministic and prioritized scheduling also are described.
An evaluation of a well-studied benchmark suite reveals that factoring programs into operators, schedulers and data structures can produce significant performance improvements over unfactored approaches. Comparison of the Galois system with existing programming models for graph analytics shows significant performance improvements, often orders of magnitude more, due to (1) better support for the restrictive programming models of existing systems and (2) better support for more sophisticated algorithms and scheduling, which cannot be expressed in other systems.
The growing size of software models poses significant scalability challenges. Amongst these scalability issues is the execution time of queries and transformations. Although the processing pipeline for models may involve numerous stages such as validation, transformation and code generation, many of these complex processes are (or can be) expressed by a combination of simpler and more fundamental operations. In many cases, these underlying operations are pure functions, making them amenable to parallelisation. We present parallel execution algorithms for a range of iteration-based operations in the context of the OCL-inspired Epsilon Object Language. Our experiments show a significant improvement in the performance of queries on large models.
Distributed Model Validation with EpsilonSina Madani
Scalable performance is a major challenge with current model management tools. As the size and complexity of models and model management programs increases and the cost of computing falls, one solution for improving performance of model management programs is to perform computations on multiple computers. The developed prototype demonstrates a low-overhead data-parallel approach for distributed model validation in the context of an OCL-like language. The approach minimises communication costs by exploiting the deterministic structure of programs and can take advantage of multiple cores on each (heterogenous) machine with highly configurable computational granularity. Performance evaluation shows linear improvements with more machines and processor cores, being up to 340x faster than the baseline sequential program with 88 computers.
This talk was given at the ACS meeting in San Francisco 2017. It provides background and examples of using a powerful combination of software and hardware to repair & revive instuments, and to create other measurement systems easily and economically.
HP operates a very complex HDP environment with key stakeholders and critical data across a variety of business areas: finance, supply chain, sales, and customer support. We load over 8,000 files per day, execute 1.5M lines of SQL via 6000 jobs running against 637B rows of data comprising over 5000 tables in 77 domains. Needless to say, defining our cluster size and monitoring job performance is essential for our success and the satisfaction of our stakeholders across the different business and IT organizations.
In this talk, we will describe the different sizing and allocation approaches that we went through. Our first method was a bottom-up storage-based calculation which took into account the legacy data, replication factors, overhead, and user space requirements. We quickly realized the current compute would not meet the needs of the follow-up phases of the project and that the bottom-up approach had too many assumptions and limitations.
The second method was to work top down to determine how many jobs could run with a set number of hours. This required us to calculate the number of slots for map and reduce tasks within set amount of YARN memory. To support this analysis, we developed advanced dashboards and reports that we will also share during the presentation. We captured statistics for every job and calculated the average map and reduce times. With this information, we could then calculate needed compute and storage to meet the required SLAs. And the result, the cluster grew by 88 nodes and now operates with 21 TB of YARN memory.
Speakers
Janet Li, HP inc, Big Data It Manager
Pranay Vyas, Hortonworks, Sr. Consultant
There are many computational paradigms that could be used to harness the power of the herd of computers. In financial services, a share-nothing approach could be used to speed up CPU intensive calculations while the hierarchal nature of rollups requires tight synchronization. Some interesting use cases are:
In Wealth Management, the SQL approach is traditionally used, but it lacks efficient support of hierarchal structures, iterative calculation, and provides limited scalability. Unlike traditional, centralized scale-up enterprise systems, an in-memory-based architecture scales out and takes advantage of cost-effective high volume commodity hardware that maximizes compute power efficiently. It makes the user experience better by speeding up response time utilizing distributed implementation of calculation algorithms. OData enables DaaS to expose financial data and calculation capabilities.
In the insurance industry, in-memory computing was used for Monte-Carlo to estimate the value of life insurance policies. This is a very CPU-intensive task, which requires 2000 cores to build ~1 million simulated policies in 30 minutes (about 25 trillion numbers or 100TB of data), which then aggregates and compresses into 40GB of data for analysis.
To speed up CPU-intensive iterative financial calculations, we use a share-nothing approach while the hierarchal nature of rollups requires tight synchronization. Several algorithms that are typical for the financial industry, different approaches on distribution and synchronization, and the benefits of in-memory data grid technologies will be discussed.
Mike Bartley - Innovations for Testing Parallel Software - EuroSTAR 2012TEST Huddle
EuroSTAR Software Testing Conference 2012 presentation on Innovations for Testing Parallel Software by Mike Bartley.
See more at: http://conference.eurostarsoftwaretesting.com/past-presentations/
In this talk we'll look at simple building-block techniques for predicting metrics over time based on past data, taking into account trend, seasonality and noise, using Python with Tensorflow.
Performance doesn’t have the same definition between system administrators, developpers and business teams. What is Performance ? High CPU usage, not scalable web site, low business transaction rate per sec, slow response time, … This presentation is about maths, code performance, load testing, web performance, best practices, … Working on performance optimizaton is a very broad topic. It’s important to really understand main concepts and to have a clean and strong methodology because it could be a very time consumming activity. Happy reading !
Introduction to Database Management SystemsAdri Jovin
This presentation contains content relevant to the introduction to the database management systems. The content is adapted from the original work of Abe Silberschatz et. al.
GraphSummit Singapore | The Art of the Possible with Graph - Q2 2024Neo4j
Neha Bajwa, Vice President of Product Marketing, Neo4j
Join us as we explore breakthrough innovations enabled by interconnected data and AI. Discover firsthand how organizations use relationships in data to uncover contextual insights and solve our most pressing challenges – from optimizing supply chains, detecting fraud, and improving customer experiences to accelerating drug discoveries.
HP operates a very complex HDP environment with key stakeholders and critical data across a variety of business areas: finance, supply chain, sales, and customer support. We load over 8,000 files per day, execute 1.5M lines of SQL via 6000 jobs running against 637B rows of data comprising over 5000 tables in 77 domains. Needless to say, defining our cluster size and monitoring job performance is essential for our success and the satisfaction of our stakeholders across the different business and IT organizations.
In this talk, we will describe the different sizing and allocation approaches that we went through. Our first method was a bottom-up storage-based calculation which took into account the legacy data, replication factors, overhead, and user space requirements. We quickly realized the current compute would not meet the needs of the follow-up phases of the project and that the bottom-up approach had too many assumptions and limitations.
The second method was to work top down to determine how many jobs could run with a set number of hours. This required us to calculate the number of slots for map and reduce tasks within set amount of YARN memory. To support this analysis, we developed advanced dashboards and reports that we will also share during the presentation. We captured statistics for every job and calculated the average map and reduce times. With this information, we could then calculate needed compute and storage to meet the required SLAs. And the result, the cluster grew by 88 nodes and now operates with 21 TB of YARN memory.
Speakers
Janet Li, HP inc, Big Data It Manager
Pranay Vyas, Hortonworks, Sr. Consultant
There are many computational paradigms that could be used to harness the power of the herd of computers. In financial services, a share-nothing approach could be used to speed up CPU intensive calculations while the hierarchal nature of rollups requires tight synchronization. Some interesting use cases are:
In Wealth Management, the SQL approach is traditionally used, but it lacks efficient support of hierarchal structures, iterative calculation, and provides limited scalability. Unlike traditional, centralized scale-up enterprise systems, an in-memory-based architecture scales out and takes advantage of cost-effective high volume commodity hardware that maximizes compute power efficiently. It makes the user experience better by speeding up response time utilizing distributed implementation of calculation algorithms. OData enables DaaS to expose financial data and calculation capabilities.
In the insurance industry, in-memory computing was used for Monte-Carlo to estimate the value of life insurance policies. This is a very CPU-intensive task, which requires 2000 cores to build ~1 million simulated policies in 30 minutes (about 25 trillion numbers or 100TB of data), which then aggregates and compresses into 40GB of data for analysis.
To speed up CPU-intensive iterative financial calculations, we use a share-nothing approach while the hierarchal nature of rollups requires tight synchronization. Several algorithms that are typical for the financial industry, different approaches on distribution and synchronization, and the benefits of in-memory data grid technologies will be discussed.
Mike Bartley - Innovations for Testing Parallel Software - EuroSTAR 2012TEST Huddle
EuroSTAR Software Testing Conference 2012 presentation on Innovations for Testing Parallel Software by Mike Bartley.
See more at: http://conference.eurostarsoftwaretesting.com/past-presentations/
In this talk we'll look at simple building-block techniques for predicting metrics over time based on past data, taking into account trend, seasonality and noise, using Python with Tensorflow.
Performance doesn’t have the same definition between system administrators, developpers and business teams. What is Performance ? High CPU usage, not scalable web site, low business transaction rate per sec, slow response time, … This presentation is about maths, code performance, load testing, web performance, best practices, … Working on performance optimizaton is a very broad topic. It’s important to really understand main concepts and to have a clean and strong methodology because it could be a very time consumming activity. Happy reading !
Introduction to Database Management SystemsAdri Jovin
This presentation contains content relevant to the introduction to the database management systems. The content is adapted from the original work of Abe Silberschatz et. al.
GraphSummit Singapore | The Art of the Possible with Graph - Q2 2024Neo4j
Neha Bajwa, Vice President of Product Marketing, Neo4j
Join us as we explore breakthrough innovations enabled by interconnected data and AI. Discover firsthand how organizations use relationships in data to uncover contextual insights and solve our most pressing challenges – from optimizing supply chains, detecting fraud, and improving customer experiences to accelerating drug discoveries.
Alt. GDG Cloud Southlake #33: Boule & Rebala: Effective AppSec in SDLC using ...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.
Why You Should Replace Windows 11 with Nitrux Linux 3.5.0 for enhanced perfor...SOFTTECHHUB
The choice of an operating system plays a pivotal role in shaping our computing experience. For decades, Microsoft's Windows has dominated the market, offering a familiar and widely adopted platform for personal and professional use. However, as technological advancements continue to push the boundaries of innovation, alternative operating systems have emerged, challenging the status quo and offering users a fresh perspective on computing.
One such alternative that has garnered significant attention and acclaim is Nitrux Linux 3.5.0, a sleek, powerful, and user-friendly Linux distribution that promises to redefine the way we interact with our devices. With its focus on performance, security, and customization, Nitrux Linux presents a compelling case for those seeking to break free from the constraints of proprietary software and embrace the freedom and flexibility of open-source computing.
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.
Smart TV Buyer Insights Survey 2024 by 91mobiles.pdf91mobiles
91mobiles recently conducted a Smart TV Buyer Insights Survey in which we asked over 3,000 respondents about the TV they own, aspects they look at on a new TV, and their TV buying preferences.
GraphSummit Singapore | The Future of Agility: Supercharging Digital Transfor...Neo4j
Leonard Jayamohan, Partner & Generative AI Lead, Deloitte
This keynote will reveal how Deloitte leverages Neo4j’s graph power for groundbreaking digital twin solutions, achieving a staggering 100x performance boost. Discover the essential role knowledge graphs play in successful generative AI implementations. Plus, get an exclusive look at an innovative Neo4j + Generative AI solution Deloitte is developing in-house.
Encryption in Microsoft 365 - ExpertsLive Netherlands 2024Albert Hoitingh
In this session I delve into the encryption technology used in Microsoft 365 and Microsoft Purview. Including the concepts of Customer Key and Double Key Encryption.
GridMate - End to end testing is a critical piece to ensure quality and avoid...ThomasParaiso2
End to end testing is a critical piece to ensure quality and avoid regressions. In this session, we share our journey building an E2E testing pipeline for GridMate components (LWC and Aura) using Cypress, JSForce, FakerJS…
Essentials of Automations: The Art of Triggers and Actions in FMESafe Software
In this second installment of our Essentials of Automations webinar series, we’ll explore the landscape of triggers and actions, guiding you through the nuances of authoring and adapting workspaces for seamless automations. Gain an understanding of the full spectrum of triggers and actions available in FME, empowering you to enhance your workspaces for efficient automation.
We’ll kick things off by showcasing the most commonly used event-based triggers, introducing you to various automation workflows like manual triggers, schedules, directory watchers, and more. Plus, see how these elements play out in real scenarios.
Whether you’re tweaking your current setup or building from the ground up, this session will arm you with the tools and insights needed to transform your FME usage into a powerhouse of productivity. Join us to discover effective strategies that simplify complex processes, enhancing your productivity and transforming your data management practices with FME. Let’s turn complexity into clarity and make your workspaces work wonders!
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
Climate Impact of Software Testing at Nordic Testing DaysKari Kakkonen
My slides at Nordic Testing Days 6.6.2024
Climate impact / sustainability of software testing discussed on the talk. ICT and testing must carry their part of global responsibility to help with the climat warming. We can minimize the carbon footprint but we can also have a carbon handprint, a positive impact on the climate. Quality characteristics can be added with sustainability, and then measured continuously. Test environments can be used less, and in smaller scale and on demand. Test techniques can be used in optimizing or minimizing number of tests. Test automation can be used to speed up testing.
UiPath Test Automation using UiPath Test Suite series, part 5DianaGray10
Welcome to UiPath Test Automation using UiPath Test Suite series part 5. In this session, we will cover CI/CD with devops.
Topics covered:
CI/CD with in UiPath
End-to-end overview of CI/CD pipeline with Azure devops
Speaker:
Lyndsey Byblow, Test Suite Sales Engineer @ UiPath, Inc.
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/
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.
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.