"Hints" talk at Walchand College Sangli, March 2017

Highlighted notes of article while studying Concurrent Data Structures, CSE: Real-world Concurrency Bryan Cantrill and Jeff Bonwick, Sun Microsystems ACM Queue, September 2008 https://doi.org/10.1145/1454456.1454462 BRYAN CANTRILL is a Distinguished Engineer at Sun Microsystems, where he has worked on concurrent systems since coming to Sun to work with Jeff Bonwick on Solaris performance in 1996. Along with colleagues Mike Shapiro and Adam Leventhal, Cantrill developed DTrace, a facility for dynamic instrumentation of production systems that was directly inspired by his frustration in understanding the behavior of concurrent systems. JEFF BONWICK is a Fellow at Sun Microsystems, where he has worked on concurrent systems since 1990. He is best known for inventing and leading the development of Sun’s ZFS (Zettabyte File System), but prior to this he was known for having written (or rather, rewritten) many of the most parallel subsystems in the Solaris kernel, including the syn- chronization primitives, the kernel memory allocator, and the thread-blocking mechanism. https://dl.acm.org/doi/10.1145/1454456.1454462

This document contains interview questions for a Linux administrator role. It includes questions about shell scripting, system administration tasks, networking, and more. Some example questions are how to take input in a shell script, write a script to convert file path slashes, and explain the differences between UDP and TCP. The document provides technical questions to assess a candidate's Linux knowledge and experience.

The document provides an overview of a course on software engineering. It discusses key concepts like structured programming, object-oriented programming, design principles of abstraction and modularity. It also covers programming in languages like C and Matlab. The goals of the course are to understand basic program design techniques, produce well-structured programs, and have a basic understanding of object-oriented design.

The document describes a course on software engineering that covers basic design principles and techniques like structured programming, object-oriented programming, and data structures. It aims to give students an understanding of how to produce well-structured, maintainable code. Examples will be shown in MATLAB and C/C++. Key concepts covered include abstraction, modularity, procedural and object-oriented programming, functions, classes, and arrays.

This was a talk, largely on Kamaelia & its original context given at a Free Streaming Workshop in Florence, Italy in Summer 2004. Many of the core concepts still hold valid in Kamaelia today

The document introduces Parallel Pixie Dust (PPD), a cross-platform thread library that aims to guarantee deadlock-free and race-condition free schedules that are optimal. It discusses the need for multiple threads due to factors like the memory wall. Current threading models are problematic because testing and debugging threaded code is difficult. PPD uses futures and thread pools to simulate data flow and generate tree-like thread schedules. It provides parallel versions of functions and thread-safe containers to enable multi-threaded standard library algorithms. The goal is to make writing correct multi-threaded programs easier.

This document discusses clustering PHP applications. It begins by defining computer clustering as linking computers to work together closely and act as a single computer. The document then discusses why clustering is used, including to service more users faster and increase reliability. It outlines objectives like linear capacity and cost increases with clustering as well as exponential reliability gains. The rest of the document summarizes various techniques for clustering PHP applications, such as load balancing, database scaling, replicated storage, backups, caching, sessions, staging strategies, and debugging clustered applications.

This document discusses the major tenets of the Linux philosophy. It explains that everything is treated as a file, there are small single-purpose programs, and programs can be chained together to perform complex tasks. Configuration data is stored in text files for easy editing and portability. Programs act as filters that take input, modify it, and output the results. The philosophy values portability over efficiency and uses software leverage through small reusable programs.

The document discusses the pros and cons of using open source software in projects. It notes that open source code comes with various licenses like GPL, BSD, and MIT that differ in how they can be used. While open source lacks perceived accountability, it actually has governance structures. The document aims to provide context on open source licensing and use within the scope of incorporating external code into a project. It addresses common concerns about open source like licensing complexity but clarifies the intent is to protect author rights, not hinder code use.

The first compilers were written by hand-translating programs into machine code opcodes. The earliest programs were written directly in binary opcodes by looking up each instruction and its corresponding opcode. Later, the first assemblers were created by hand to automate this process. These early assemblers could then be used to assemble more advanced assemblers and compilers. This process of using each new tool to build the next was called bootstrapping. The first high-level programming language was FORTRAN, created in 1954, which had an optimizing compiler that produced very efficient code and helped establish modern programming practices.

The document provides an overview of Linux interview essentials related to operating system concepts, system calls, inter-process communication, and threads. It discusses topics such as the role and components of an operating system, multi-tasking and scheduling policies, differences between function calls and system calls, static and dynamic linking, common code and stack errors, memory leaks, kernel modes, monolithic and micro kernels, interrupts, exceptions, system calls implementation in Linux, and synchronous vs asynchronous communication methods.

The document discusses parallel computing over the past 25 years and challenges for using multicore chips in the next decade. It aims to provide context to scale applications effectively to 32-1024 cores. Key challenges include expressing inherent application parallelism while enabling efficient mapping to hardware through programming models and runtime systems. Future work includes developing methods to restore lost parallelism information and tradeoffs between programming effort, generality and performance.

This document contains the questions and answers from a computer architecture and organization exam. It includes questions about the differences between computer architecture and organization, instruction formats, bus definitions, cache memory advantages, and virtual memory. The responses provide detailed explanations of concepts like locality of reference, thrashing, address mapping, cache hits and misses, and hierarchical memory systems. Justification is given for using a hierarchical approach to improve performance across different memory types. The differences between paging and segmentation in virtual memory are also distinguished.

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The document describes an instructional operating system called Nachos that was developed for teaching undergraduate operating systems courses. Some key points: - Nachos simulates a RISC CPU and devices to allow students to modify an operating system kernel without needing physical hardware. It runs as a UNIX process. - The assignments guide students through implementing core OS functionality like threads, file systems, multiprogramming, and networking. This allows students to build their understanding of modern operating system concepts through hands-on projects. - Nachos emphasizes simplicity over realism so students can understand the entire system. The authors found simplicity was important for students to grasp concurrency and other challenging OS concepts.

The document describes an instructional operating system called Nachos that was developed for teaching undergraduate operating systems concepts. Some key points: - Nachos simulates a RISC CPU and devices to allow students to modify an operating system kernel as a project. It runs as a UNIX process for simplicity. - There are 5 main assignments that cover thread management, file systems, multiprogramming, virtual memory, and networking. Each builds on concepts from previous assignments. - The goal was to create a simple yet realistic system that illustrates modern OS techniques and allows quantitative evaluation of design tradeoffs through benchmarks.

Highlighted notes of article while studying Concurrent Data Structures, CSE: Software and the Concurrency Revolution Herb Sutter Software Architect, Microsoft Software Development Consultant, www.gotw.ca/training Herb Sutter is a prominent C++ expert. He is also a book author and was a columnist for Dr. Dobb's Journal. He joined Microsoft in 2002 as a platform evangelist for Visual C++ .NET, rising to lead software architect for C++/CLI.

MuleSoft Meetup on APM and IDP

accommodate the strengths, weaknesses, threats and opportunities of autonomous vehicles

This brochure gives introduction of MYIR Electronics company and MYIR's products and services. MYIR Electronics Limited (MYIR for short), established in 2011, is a global provider of embedded System-On-Modules (SOMs) and comprehensive solutions based on various architectures such as ARM, FPGA, RISC-V, and AI. We cater to customers' needs for large-scale production, offering customized design, industry-specific application solutions, and one-stop OEM services. MYIR, recognized as a national high-tech enterprise, is also listed among the "Specialized and Special new" Enterprises in Shenzhen, China. Our core belief is that "Our success stems from our customers' success" and embraces the philosophy of "Make Your Idea Real, then My Idea Realizing!"

Are you interested in dipping your toes in the cloud native observability waters, but as an engineer you are not sure where to get started with tracing problems through your microservices and application landscapes on Kubernetes? Then this is the session for you, where we take you on your first steps in an active open-source project that offers a buffet of languages, challenges, and opportunities for getting started with telemetry data. The project is called openTelemetry, but before diving into the specifics, we’ll start with de-mystifying key concepts and terms such as observability, telemetry, instrumentation, cardinality, percentile to lay a foundation. After understanding the nuts and bolts of observability and distributed traces, we’ll explore the openTelemetry community; its Special Interest Groups (SIGs), repositories, and how to become not only an end-user, but possibly a contributor.We will wrap up with an overview of the components in this project, such as the Collector, the OpenTelemetry protocol (OTLP), its APIs, and its SDKs. Attendees will leave with an understanding of key observability concepts, become grounded in distributed tracing terminology, be aware of the components of openTelemetry, and know how to take their first steps to an open-source contribution! Key Takeaways: Open source, vendor neutral instrumentation is an exciting new reality as the industry standardizes on openTelemetry for observability. OpenTelemetry is on a mission to enable effective observability by making high-quality, portable telemetry ubiquitous. The world of observability and monitoring today has a steep learning curve and in order to achieve ubiquity, the project would benefit from growing our contributor community.