The document discusses various topics related to parallel and distributed computing including parallel computing resources and concepts, Flynn's taxonomy of parallel systems, parallel computer memory architectures like shared memory and distributed memory, parallel programming models such as shared memory, message passing and data parallel models, designing parallel programs including partitioning and load balancing, and different parallel computer architectures like vector processors, very long instruction word architecture, and superpipelined architecture.
This document provides an overview of hardware multithreading techniques including fine-grained, coarse-grained, and simultaneous multithreading. Fine-grained multithreading switches threads after every instruction to hide latency. Coarse-grained multithreading switches threads only after long stalls to avoid slowing individual threads. Simultaneous multithreading issues instructions from multiple threads each cycle to better utilize functional units.
The document discusses parallel and distributed computing concepts in Aneka including multiprocessing, multithreading, task-based programming, and parameter sweep applications. It describes key aspects of implementing parallel applications in Aneka such as defining tasks, managing task execution, file handling, and tools for developing parameter sweep jobs. The document also provides an overview of how workflow managers can interface with Aneka.
Parallel computing involves using multiple processing units simultaneously to solve computational problems. It can save time by solving large problems or providing concurrency. The basic design involves memory storing program instructions and data, and a CPU fetching instructions from memory and sequentially performing them. Flynn's taxonomy classifies computer systems based on their instruction and data streams as SISD, SIMD, MISD, or MIMD. Parallel architectures can also be classified based on their memory arrangement as shared memory or distributed memory systems.
Most modern applications are multithreaded
Threads run within application
Multiple tasks with the application can be implemented by separate threads
Update display
Fetch data
Spell checking
Answer a network request
Process creation is heavy-weight while thread creation is light-weight
Can simplify code, increase efficiency
Kernels are generally multithreaded
This document provides an overview of parallelism, including the need for parallelism, types of parallelism, applications of parallelism, and challenges in parallelism. It discusses instruction level parallelism and data level parallelism in software. It describes Flynn's classification of computer architectures and the categories of SISD, SIMD, MISD, and MIMD. It also covers hardware multi-threading, uni-processors vs multi-processors, multi-core processors, memory in multi-processor systems, cache coherency, and the MESI protocol.
This document provides an overview of parallelism and parallel computing architectures. It discusses the need for parallelism to improve performance and throughput. The main types of parallelism covered are instruction level parallelism, data parallelism, and task parallelism. Flynn's taxonomy is introduced for classifying computer architectures based on their instruction and data streams. Common parallel architectures like SISD, SIMD, MIMD are explained. The document also covers memory architectures for multi-processor systems including shared memory, distributed memory, and cache coherency protocols.
This document discusses CPU scheduling and multithreaded programming. It covers key concepts in CPU scheduling like multiprogramming, CPU-I/O burst cycles, and scheduling criteria. It also discusses dispatcher role, multilevel queue scheduling, and multiple processor scheduling challenges. For multithreaded programming, it defines threads and their benefits. It compares concurrency and parallelism and discusses multithreading models, thread libraries, and threading issues.
This document provides an overview of hardware multithreading techniques including fine-grained, coarse-grained, and simultaneous multithreading. Fine-grained multithreading switches threads after every instruction to hide latency. Coarse-grained multithreading switches threads only after long stalls to avoid slowing individual threads. Simultaneous multithreading issues instructions from multiple threads each cycle to better utilize functional units.
The document discusses parallel and distributed computing concepts in Aneka including multiprocessing, multithreading, task-based programming, and parameter sweep applications. It describes key aspects of implementing parallel applications in Aneka such as defining tasks, managing task execution, file handling, and tools for developing parameter sweep jobs. The document also provides an overview of how workflow managers can interface with Aneka.
Parallel computing involves using multiple processing units simultaneously to solve computational problems. It can save time by solving large problems or providing concurrency. The basic design involves memory storing program instructions and data, and a CPU fetching instructions from memory and sequentially performing them. Flynn's taxonomy classifies computer systems based on their instruction and data streams as SISD, SIMD, MISD, or MIMD. Parallel architectures can also be classified based on their memory arrangement as shared memory or distributed memory systems.
Most modern applications are multithreaded
Threads run within application
Multiple tasks with the application can be implemented by separate threads
Update display
Fetch data
Spell checking
Answer a network request
Process creation is heavy-weight while thread creation is light-weight
Can simplify code, increase efficiency
Kernels are generally multithreaded
This document provides an overview of parallelism, including the need for parallelism, types of parallelism, applications of parallelism, and challenges in parallelism. It discusses instruction level parallelism and data level parallelism in software. It describes Flynn's classification of computer architectures and the categories of SISD, SIMD, MISD, and MIMD. It also covers hardware multi-threading, uni-processors vs multi-processors, multi-core processors, memory in multi-processor systems, cache coherency, and the MESI protocol.
This document provides an overview of parallelism and parallel computing architectures. It discusses the need for parallelism to improve performance and throughput. The main types of parallelism covered are instruction level parallelism, data parallelism, and task parallelism. Flynn's taxonomy is introduced for classifying computer architectures based on their instruction and data streams. Common parallel architectures like SISD, SIMD, MIMD are explained. The document also covers memory architectures for multi-processor systems including shared memory, distributed memory, and cache coherency protocols.
This document discusses CPU scheduling and multithreaded programming. It covers key concepts in CPU scheduling like multiprogramming, CPU-I/O burst cycles, and scheduling criteria. It also discusses dispatcher role, multilevel queue scheduling, and multiple processor scheduling challenges. For multithreaded programming, it defines threads and their benefits. It compares concurrency and parallelism and discusses multithreading models, thread libraries, and threading issues.
Conventional architectures coarsely comprise of a processor, memory system, and the datapath.
Each of these components present significant performance bottlenecks.
Parallelism addresses each of these components in significant ways.
Different applications utilize different aspects of parallelism - e.g., data itensive applications utilize high aggregate throughput, server applications utilize high aggregate network bandwidth, and scientific applications typically utilize high processing and memory system performance.
It is important to understand each of these performance bottlenecks.
This document provides an overview of system architecture and processor architectures. It discusses different types of system architecture like system-level building blocks, components of a system, hardware and software implementation, and instruction-level parallelism. It also describes various processor architectures like sequential, pipelined, superscalar, VLIW, SIMD, array, and vector processors. Additionally, it covers memory and addressing in systems-on-chip including memory considerations, virtual memory, and the process of determining physical memory addresses.
The document discusses several difficulties in pipelining processors, including timing variations between stages, data hazards when instructions reference the same data, branching unpredictability, and interrupt effects. It also lists advantages like reduced cycle time and increased throughput, and disadvantages like design complexity. Later, it covers superscalar processors that can execute multiple instructions per cycle using multiple arithmetic logic units and resources, and very long instruction word processors where the compiler statically schedules parallel instructions. Finally, it discusses RISC, CISC, and EPIC commercial processor examples.
Threads provide concurrency within a process by allowing parallel execution. A thread is a flow of execution that has its own program counter, registers, and stack. Threads share code and data segments with other threads in the same process. There are two types: user threads managed by a library and kernel threads managed by the operating system kernel. Kernel threads allow true parallelism but have more overhead than user threads. Multithreading models include many-to-one, one-to-one, and many-to-many depending on how user threads map to kernel threads. Threads improve performance over single-threaded processes and allow for scalability across multiple CPUs.
The document provides an overview of microprocessors and microcontrollers. It discusses the basic architecture of microprocessors, including the Von Neumann and Harvard architectures. It compares RISC and CISC instruction sets. Microcontrollers are defined as single-chip computers containing a CPU, memory, and I/O ports. Common PIC microcontrollers are described along with their characteristics such as speed, memory types, and analog/digital capabilities. The document also outlines best practices for selecting a suitable microcontroller for a project, including identifying hardware interfaces, memory needs, programming tools, and cost/power constraints.
The objectives of Multithreaded programming in Operating systems are:
- To introduce the notion of a thread—a fundamental unit of CPU utilization that forms the basis of multithreaded computer systems.
- To discuss the APIs for the Pthreads, Windows, and Java thread libraries
- To explore several strategies that provide implicit threading.
- To examine issues related to multithreaded programming.
- To cover operating system support for threads in Windows and Linux.
This document provides an overview of parallel computing models and the evolution of computer hardware and software. It discusses:
1) Flynn's taxonomy which classifies computer architectures based on whether they have a single or multiple instruction/data streams. This includes SISD, SIMD, MISD, and MIMD models.
2) The attributes that influence computer performance such as hardware technology, algorithms, data structures, and programming tools. Performance is measured by turnaround time, clock rate, and cycles per instruction.
3) A brief history of computing from mechanical devices to modern electronic computers organized into generations defined by advances in hardware and software.
The document discusses parallel computing techniques using threads. It describes domain decomposition, where a problem is divided into independent tasks that can be executed concurrently by threads. Matrix multiplication is provided as an example, where each element of the resulting matrix is computed independently by a thread. Functional decomposition, where a problem is broken into distinct computational functions, is also introduced. Programming models for threads in Java, .NET and POSIX are overviewed.
Chip Multithreading Systems Need a New Operating System Scheduler Sarwan ali
This document discusses the need for a new operating system scheduler for chip multithreading (CMT) systems. CMT combines chip multiprocessing and hardware multithreading to improve processor utilization. The current schedulers do not scale well to the large number of hardware threads in CMT systems. A new scheduler is proposed that would model resource contention and use this to minimize contention and maximize throughput when assigning threads to processors. Experiments show that resource contention, especially in the processor pipeline, has a significant impact on performance and a CMT-aware scheduler could improve performance by up to 2x.
SIMD (single instruction, multiple data) parallel processors exploit data-level parallelism by performing the same operation on multiple data points simultaneously using a single instruction. Vector processors are a type of SIMD parallel processor that operate on 1D arrays of data called vectors. They contain vector registers that can hold multiple data elements and functional units that perform arithmetic and logical operations in a pipelined fashion on entire vectors. Array processors are another type of SIMD machine composed of multiple identical processing elements that perform computations in lockstep under the control of a single instruction unit. Early examples include the ILLIAC IV and Cray X1 supercomputers. Multimedia extensions like MMX provide SIMD integer operations to improve performance of multimedia applications.
This document discusses parallel processors, specifically single instruction multiple data (SIMD) processors. It provides details on vector processors and array processors. Vector processors utilize vector instructions that operate on arrays of data called vectors. They have vector registers, functional units, and load/store units. Array processors perform parallel computations on large data arrays using multiple identical processing elements. The document describes dedicated memory and global memory organizations for array processors. It provides examples of early SIMD machines like ILLIAC IV.
This document discusses parallel processors and multicore architecture. It begins with an introduction to parallel processors, including concurrent access to memory and cache coherency. It then discusses multicore architecture, where a single physical processor contains the logic of two or more cores. This allows increasing processing power while keeping clock speeds and power consumption lower than would be needed for a single high-speed core. Cache coherence methods like write-through, write-back, and directory-based approaches are also summarized for maintaining consistency across cores' caches when accessing shared memory.
Array Processors & Architectural Classification Schemes_Computer Architecture...Sumalatha A
This document discusses array processors and architectural classification schemes. It describes how array processors use multiple arithmetic logic units that operate in parallel to achieve spatial parallelism. They are capable of processing array elements and connecting processing elements in various patterns depending on the computation. The document also introduces Flynn's taxonomy, which classifies architectures based on their instruction and data streams as SISD, SIMD, MIMD, or MISD. Feng's classification and Handlers classification schemes are also overviewed.
This document discusses parallel and distributed computing concepts like multithreading, multitasking, and multiprocessing. It defines processes and threads, with processes being heavier weight and using more resources than threads. While processes are isolated and don't share data, threads within the same process can share data and resources. Multitasking allows running multiple processes concurrently, while multithreading allows a single process to perform multiple tasks simultaneously. The benefits of multithreading include improved responsiveness, faster context switching, and better utilization of multiprocessor systems.
This chapter discusses various classification attributed to parallel architectures. It also introduces related parallel programming models and presents the actions of these models on parallel architectures. Notions such as Data parallelism Task parallelism, Tighty and Coupled system, UMA/NUMA, Multicore computing, Symmetric multiprocessing, Distributed Computing, Cluster computing, Shared memory without thread/Thread, etc..
The document discusses parallel computing platforms and techniques for hiding memory latency. It covers the following key points:
1) Implicit parallelism in microprocessors has increased through pipelining and superscalar execution, but memory latency remains a bottleneck. Caches help reduce effective latency by exploiting data locality.
2) Multithreading and prefetching are approaches to hide memory latency by keeping the processor occupied while waiting for data, but they increase bandwidth demands and hardware costs.
3) Different applications utilize different types of parallelism, like data-level parallelism for throughput or task-level parallelism for aggregate performance. Understanding performance bottlenecks is important for parallelization.
Threads are lightweight processes that improve application performance through parallelism. Each thread has its own program counter and stack but shares other resources like memory with other threads in a process. Using threads provides advantages like lower overhead context switching compared to processes and allows parallel execution on multi-core systems. There are two types of threads - user level threads managed by libraries and kernel level threads supported by the OS kernel. Threads have a life cycle that involves states like new, ready, running, blocked, and terminated.
Threads are lightweight processes that improve application performance through parallelism. Each thread has its own program counter and stack but shares other resources like memory with other threads in a process. Using threads provides advantages like lower overhead context switching compared to processes and allows parallel execution on multi-core systems. There are two types of threads - user level threads managed by libraries and kernel level threads supported by the OS kernel. Threads have a life cycle that includes states like new, ready, running, blocked, and terminated.
Exploiting Artificial Intelligence for Empowering Researchers and Faculty, In...Dr. Vinod Kumar Kanvaria
Exploiting Artificial Intelligence for Empowering Researchers and Faculty,
International FDP on Fundamentals of Research in Social Sciences
at Integral University, Lucknow, 06.06.2024
By Dr. Vinod Kumar Kanvaria
Executive Directors Chat Leveraging AI for Diversity, Equity, and InclusionTechSoup
Let’s explore the intersection of technology and equity in the final session of our DEI series. Discover how AI tools, like ChatGPT, can be used to support and enhance your nonprofit's DEI initiatives. Participants will gain insights into practical AI applications and get tips for leveraging technology to advance their DEI goals.
Conventional architectures coarsely comprise of a processor, memory system, and the datapath.
Each of these components present significant performance bottlenecks.
Parallelism addresses each of these components in significant ways.
Different applications utilize different aspects of parallelism - e.g., data itensive applications utilize high aggregate throughput, server applications utilize high aggregate network bandwidth, and scientific applications typically utilize high processing and memory system performance.
It is important to understand each of these performance bottlenecks.
This document provides an overview of system architecture and processor architectures. It discusses different types of system architecture like system-level building blocks, components of a system, hardware and software implementation, and instruction-level parallelism. It also describes various processor architectures like sequential, pipelined, superscalar, VLIW, SIMD, array, and vector processors. Additionally, it covers memory and addressing in systems-on-chip including memory considerations, virtual memory, and the process of determining physical memory addresses.
The document discusses several difficulties in pipelining processors, including timing variations between stages, data hazards when instructions reference the same data, branching unpredictability, and interrupt effects. It also lists advantages like reduced cycle time and increased throughput, and disadvantages like design complexity. Later, it covers superscalar processors that can execute multiple instructions per cycle using multiple arithmetic logic units and resources, and very long instruction word processors where the compiler statically schedules parallel instructions. Finally, it discusses RISC, CISC, and EPIC commercial processor examples.
Threads provide concurrency within a process by allowing parallel execution. A thread is a flow of execution that has its own program counter, registers, and stack. Threads share code and data segments with other threads in the same process. There are two types: user threads managed by a library and kernel threads managed by the operating system kernel. Kernel threads allow true parallelism but have more overhead than user threads. Multithreading models include many-to-one, one-to-one, and many-to-many depending on how user threads map to kernel threads. Threads improve performance over single-threaded processes and allow for scalability across multiple CPUs.
The document provides an overview of microprocessors and microcontrollers. It discusses the basic architecture of microprocessors, including the Von Neumann and Harvard architectures. It compares RISC and CISC instruction sets. Microcontrollers are defined as single-chip computers containing a CPU, memory, and I/O ports. Common PIC microcontrollers are described along with their characteristics such as speed, memory types, and analog/digital capabilities. The document also outlines best practices for selecting a suitable microcontroller for a project, including identifying hardware interfaces, memory needs, programming tools, and cost/power constraints.
The objectives of Multithreaded programming in Operating systems are:
- To introduce the notion of a thread—a fundamental unit of CPU utilization that forms the basis of multithreaded computer systems.
- To discuss the APIs for the Pthreads, Windows, and Java thread libraries
- To explore several strategies that provide implicit threading.
- To examine issues related to multithreaded programming.
- To cover operating system support for threads in Windows and Linux.
This document provides an overview of parallel computing models and the evolution of computer hardware and software. It discusses:
1) Flynn's taxonomy which classifies computer architectures based on whether they have a single or multiple instruction/data streams. This includes SISD, SIMD, MISD, and MIMD models.
2) The attributes that influence computer performance such as hardware technology, algorithms, data structures, and programming tools. Performance is measured by turnaround time, clock rate, and cycles per instruction.
3) A brief history of computing from mechanical devices to modern electronic computers organized into generations defined by advances in hardware and software.
The document discusses parallel computing techniques using threads. It describes domain decomposition, where a problem is divided into independent tasks that can be executed concurrently by threads. Matrix multiplication is provided as an example, where each element of the resulting matrix is computed independently by a thread. Functional decomposition, where a problem is broken into distinct computational functions, is also introduced. Programming models for threads in Java, .NET and POSIX are overviewed.
Chip Multithreading Systems Need a New Operating System Scheduler Sarwan ali
This document discusses the need for a new operating system scheduler for chip multithreading (CMT) systems. CMT combines chip multiprocessing and hardware multithreading to improve processor utilization. The current schedulers do not scale well to the large number of hardware threads in CMT systems. A new scheduler is proposed that would model resource contention and use this to minimize contention and maximize throughput when assigning threads to processors. Experiments show that resource contention, especially in the processor pipeline, has a significant impact on performance and a CMT-aware scheduler could improve performance by up to 2x.
SIMD (single instruction, multiple data) parallel processors exploit data-level parallelism by performing the same operation on multiple data points simultaneously using a single instruction. Vector processors are a type of SIMD parallel processor that operate on 1D arrays of data called vectors. They contain vector registers that can hold multiple data elements and functional units that perform arithmetic and logical operations in a pipelined fashion on entire vectors. Array processors are another type of SIMD machine composed of multiple identical processing elements that perform computations in lockstep under the control of a single instruction unit. Early examples include the ILLIAC IV and Cray X1 supercomputers. Multimedia extensions like MMX provide SIMD integer operations to improve performance of multimedia applications.
This document discusses parallel processors, specifically single instruction multiple data (SIMD) processors. It provides details on vector processors and array processors. Vector processors utilize vector instructions that operate on arrays of data called vectors. They have vector registers, functional units, and load/store units. Array processors perform parallel computations on large data arrays using multiple identical processing elements. The document describes dedicated memory and global memory organizations for array processors. It provides examples of early SIMD machines like ILLIAC IV.
This document discusses parallel processors and multicore architecture. It begins with an introduction to parallel processors, including concurrent access to memory and cache coherency. It then discusses multicore architecture, where a single physical processor contains the logic of two or more cores. This allows increasing processing power while keeping clock speeds and power consumption lower than would be needed for a single high-speed core. Cache coherence methods like write-through, write-back, and directory-based approaches are also summarized for maintaining consistency across cores' caches when accessing shared memory.
Array Processors & Architectural Classification Schemes_Computer Architecture...Sumalatha A
This document discusses array processors and architectural classification schemes. It describes how array processors use multiple arithmetic logic units that operate in parallel to achieve spatial parallelism. They are capable of processing array elements and connecting processing elements in various patterns depending on the computation. The document also introduces Flynn's taxonomy, which classifies architectures based on their instruction and data streams as SISD, SIMD, MIMD, or MISD. Feng's classification and Handlers classification schemes are also overviewed.
This document discusses parallel and distributed computing concepts like multithreading, multitasking, and multiprocessing. It defines processes and threads, with processes being heavier weight and using more resources than threads. While processes are isolated and don't share data, threads within the same process can share data and resources. Multitasking allows running multiple processes concurrently, while multithreading allows a single process to perform multiple tasks simultaneously. The benefits of multithreading include improved responsiveness, faster context switching, and better utilization of multiprocessor systems.
This chapter discusses various classification attributed to parallel architectures. It also introduces related parallel programming models and presents the actions of these models on parallel architectures. Notions such as Data parallelism Task parallelism, Tighty and Coupled system, UMA/NUMA, Multicore computing, Symmetric multiprocessing, Distributed Computing, Cluster computing, Shared memory without thread/Thread, etc..
The document discusses parallel computing platforms and techniques for hiding memory latency. It covers the following key points:
1) Implicit parallelism in microprocessors has increased through pipelining and superscalar execution, but memory latency remains a bottleneck. Caches help reduce effective latency by exploiting data locality.
2) Multithreading and prefetching are approaches to hide memory latency by keeping the processor occupied while waiting for data, but they increase bandwidth demands and hardware costs.
3) Different applications utilize different types of parallelism, like data-level parallelism for throughput or task-level parallelism for aggregate performance. Understanding performance bottlenecks is important for parallelization.
Threads are lightweight processes that improve application performance through parallelism. Each thread has its own program counter and stack but shares other resources like memory with other threads in a process. Using threads provides advantages like lower overhead context switching compared to processes and allows parallel execution on multi-core systems. There are two types of threads - user level threads managed by libraries and kernel level threads supported by the OS kernel. Threads have a life cycle that involves states like new, ready, running, blocked, and terminated.
Threads are lightweight processes that improve application performance through parallelism. Each thread has its own program counter and stack but shares other resources like memory with other threads in a process. Using threads provides advantages like lower overhead context switching compared to processes and allows parallel execution on multi-core systems. There are two types of threads - user level threads managed by libraries and kernel level threads supported by the OS kernel. Threads have a life cycle that includes states like new, ready, running, blocked, and terminated.
Exploiting Artificial Intelligence for Empowering Researchers and Faculty, In...Dr. Vinod Kumar Kanvaria
Exploiting Artificial Intelligence for Empowering Researchers and Faculty,
International FDP on Fundamentals of Research in Social Sciences
at Integral University, Lucknow, 06.06.2024
By Dr. Vinod Kumar Kanvaria
Executive Directors Chat Leveraging AI for Diversity, Equity, and InclusionTechSoup
Let’s explore the intersection of technology and equity in the final session of our DEI series. Discover how AI tools, like ChatGPT, can be used to support and enhance your nonprofit's DEI initiatives. Participants will gain insights into practical AI applications and get tips for leveraging technology to advance their DEI goals.
How to Setup Warehouse & Location in Odoo 17 InventoryCeline George
In this slide, we'll explore how to set up warehouses and locations in Odoo 17 Inventory. This will help us manage our stock effectively, track inventory levels, and streamline warehouse operations.
A workshop hosted by the South African Journal of Science aimed at postgraduate students and early career researchers with little or no experience in writing and publishing journal articles.
How to Manage Your Lost Opportunities in Odoo 17 CRMCeline George
Odoo 17 CRM allows us to track why we lose sales opportunities with "Lost Reasons." This helps analyze our sales process and identify areas for improvement. Here's how to configure lost reasons in Odoo 17 CRM
Walmart Business+ and Spark Good for Nonprofits.pdfTechSoup
"Learn about all the ways Walmart supports nonprofit organizations.
You will hear from Liz Willett, the Head of Nonprofits, and hear about what Walmart is doing to help nonprofits, including Walmart Business and Spark Good. Walmart Business+ is a new offer for nonprofits that offers discounts and also streamlines nonprofits order and expense tracking, saving time and money.
The webinar may also give some examples on how nonprofits can best leverage Walmart Business+.
The event will cover the following::
Walmart Business + (https://business.walmart.com/plus) is a new shopping experience for nonprofits, schools, and local business customers that connects an exclusive online shopping experience to stores. Benefits include free delivery and shipping, a 'Spend Analytics” feature, special discounts, deals and tax-exempt shopping.
Special TechSoup offer for a free 180 days membership, and up to $150 in discounts on eligible orders.
Spark Good (walmart.com/sparkgood) is a charitable platform that enables nonprofits to receive donations directly from customers and associates.
Answers about how you can do more with Walmart!"
How to Add Chatter in the odoo 17 ERP ModuleCeline George
In Odoo, the chatter is like a chat tool that helps you work together on records. You can leave notes and track things, making it easier to talk with your team and partners. Inside chatter, all communication history, activity, and changes will be displayed.
This slide is special for master students (MIBS & MIFB) in UUM. Also useful for readers who are interested in the topic of contemporary Islamic banking.
हिंदी वर्णमाला पीपीटी, hindi alphabet PPT presentation, hindi varnamala PPT, Hindi Varnamala pdf, हिंदी स्वर, हिंदी व्यंजन, sikhiye hindi varnmala, dr. mulla adam ali, hindi language and literature, hindi alphabet with drawing, hindi alphabet pdf, hindi varnamala for childrens, hindi language, hindi varnamala practice for kids, https://www.drmullaadamali.com
This presentation includes basic of PCOS their pathology and treatment and also Ayurveda correlation of PCOS and Ayurvedic line of treatment mentioned in classics.
Strategies for Effective Upskilling is a presentation by Chinwendu Peace in a Your Skill Boost Masterclass organisation by the Excellence Foundation for South Sudan on 08th and 09th June 2024 from 1 PM to 3 PM on each day.
25. Cache-only memory access(COMA)
• In these memory architectures, only cache memories are
present; no main memory is employed either in the form
of a central shared memory as in UMA machines or in
the form of a distributed main memory as in NUMA and
CC-NUMA computers.
117. Vector Processor
• Vector processor is basically a central processing unit
that has the ability to execute the complete vector
input in a single instruction. More specifically we can
say, it is a complete unit of hardware resources that
executes a sequential set of similar data items in the
memory using a single instruction.
• We know elements of the vector are ordered properly
so as to have successive addressing format of the
memory. This is the reason why we have mentioned
that it implements the data sequentially.
118. • It holds a single control unit but has multiple execution
units that perform the same operation on different data
elements of the vector.
• Unlike scalar processors that operate on only a single pair
of data, a vector processor operates on multiple pair of
data. However, one can convert a scalar code into vector
code. This conversion process is known as vectorization. So,
we can say vector processing allows operation on multiple
data elements by the help of single instruction.
• These instructions are said to be single instruction multiple
data or vector instructions. The CPU used in recent time
makes use of vector processing as it is advantageous than
scalar processing.
120. • The functional units of a vector computer are as
follows:
• IPU or instruction processing unit
• Vector register
• Scalar register
• Scalar processor
• Vector instruction controller
• Vector access controller
• Vector processor
121. • As it has several functional pipes thus it can execute the instructions over the
operands. We know that both data and instructions are present in the memory at
the desired memory location. So, the instruction processing unit i.e., IPU fetches
the instruction from the memory.
• Once the instruction is fetched then IPU determines either the fetched instruction
is scalar or vector in nature. If it is scalar in nature, then the instruction is
transferred to the scalar register and then further scalar processing is performed.
• While, when the instruction is a vector in nature then it is fed to the vector
instruction controller. This vector instruction controller first decodes the vector
instruction then accordingly determines the address of the vector operand present
in the memory.
• Then it gives a signal to the vector access controller about the demand of the
respective operand. This vector access controller then fetches the desired operand
from the memory. Once the operand is fetched then it is provided to the
instruction register so that it can be processed at the vector processor.
• At times when multiple vector instructions are present, then the vector instruction
controller provides the multiple vector instructions to the task system. And in case
the task system shows that the vector task is very long then the processor divides
the task into subvectors.
122. • These subvectors are fed to the vector processor that makes use of several
pipelines in order to execute the instruction over the operand fetched from the
memory at the same time.
• The various vector instructions are scheduled by the vector instruction controller.
123. Very Long Instruction Word (VLIW)
Architecture
• The limitations of the Superscalar processor are prominent as the difficulty of
scheduling instruction becomes complex. The intrinsic parallelism in the
instruction stream, complexity, cost, and the branch instruction issue get
resolved by a higher instruction set architecture called the Very Long
Instruction Word (VLIW) or VLIW Machines.
• VLIW uses Instruction Level Parallelism, i.e. it has programs to control the
parallel execution of the instructions.
• In other architectures, the performance of the processor is improved by using
either of the following methods: pipelining (break the instruction into
subparts), superscalar processor (independently execute the instructions in
different parts of the processor), out-of-order-execution (execute orders
differently to the program) but each of these methods add to the complexity
of the hardware very much.
• VLIW Architecture deals with it by depending on the compiler. The programs
decide the parallel flow of the instructions and to resolve conflicts. This
increases compiler complexity but decreases hardware complexity by a lot.
124. Features
• The processors in this architecture have multiple functional units, fetch
from the Instruction cache that have the Very Long Instruction Word.
• Multiple independent operations are grouped together in a single VLIW
Instruction. They are initialized in the same clock cycle.
• Each operation is assigned an independent functional unit.
• All the functional units share a common register file.
• Instruction words are typically of the length 64-1024 bits depending on
the number of execution unit and the code length required to control each
unit.
• Instruction scheduling and parallel dispatch of the word is done statically
by the compiler.
• The compiler checks for dependencies before scheduling parallel
execution of the instructions.
126. Advantages
• Reduces hardware complexity.
• Reduces power consumption because of reduction of
hardware complexity.
• Since compiler takes care of data dependency check,
decoding, instruction issues, it becomes a lot simpler.
127. Disadvantages
• Complex compilers are required which are hard to design.
• Increased program code size.
• Larger memory bandwidth and register-file bandwidth.
128. SuperPipelined Architecture
• Super-pipelining is the breaking of stages of a given pipeline into smaller
stages (thus making the pipeline deeper) in an attempt to shorten the
clock period and thus enhancing the instruction throughput by keeping
more and more instructions in flight at a time.
• Superpipelining is an alternative approach to achieve greater
performance. Many pipeline stages need half a clock cycle.
129.
130. Superscalar Vs superpipelined
structure
• Superscalar machines can issue several instructions per
cycle. Superpipelined machines can issue only one instruction per cycle,
but they have cycle times shorter than the time required for any
operation. Both of these techniques exploit instruction-level parallelism,
which is often limited in many applications.
• Superscalar attempts to increase performance by executing multiple
instructions in parallel. Super-pipelining seeks to improve the sequential
instruction rate, while superscalar seeks to improve the parallel
instruction rate. Most modern processors are both superscalar and super-
pipelined.