Parallelism - Electrical & Computer Engineering
... For non-trivial problems, it helps to have more formal concepts for determining parallelism When we think about how to parallelize a program we use the concepts of decomposition: Task decomposition: dividing the algorithm into individual tasks (don’t focus on data) In the previous example th ...
... For non-trivial problems, it helps to have more formal concepts for determining parallelism When we think about how to parallelize a program we use the concepts of decomposition: Task decomposition: dividing the algorithm into individual tasks (don’t focus on data) In the previous example th ...
14 Concurency
... • A better way to provide competition synchronization than are semaphores • Semaphores can be used to implement monitors • Monitors can be used to implement semaphores ...
... • A better way to provide competition synchronization than are semaphores • Semaphores can be used to implement monitors • Monitors can be used to implement semaphores ...
Matlab Computing @ CBI Lab Parallel Computing Toolbox
... In local mode, the client Matlab® session maps to an operating system process, containing multiple threads. Each lab requires the creation of a new operating system process, each with multiple threads. Since a thread is the scheduled OS entity, all threads from all Matlab® processes will be competin ...
... In local mode, the client Matlab® session maps to an operating system process, containing multiple threads. Each lab requires the creation of a new operating system process, each with multiple threads. Since a thread is the scheduled OS entity, all threads from all Matlab® processes will be competin ...
Grid - Department of Computer Science
... • Several MPI implementations exist for the grid • PACX MPI (Stutgart): – Runs on heterogeneous systems ...
... • Several MPI implementations exist for the grid • PACX MPI (Stutgart): – Runs on heterogeneous systems ...
Data layout transformation exploiting memory-level
... both cases, it is important to have concurrent accesses bearing desired memory address bit patterns in terms of memory access vectorization. Intuitively this can be addressed by loop transformations to achieve unit-strided access in the inner loop. However, for arrays of structures, it is necessary ...
... both cases, it is important to have concurrent accesses bearing desired memory address bit patterns in terms of memory access vectorization. Intuitively this can be addressed by loop transformations to achieve unit-strided access in the inner loop. However, for arrays of structures, it is necessary ...
Evolving Software Tools for New Distributed Computing Environments
... ploit information concerning overall system behavior as well as application-specic information gained from static and dynamic analysis to achieve an adaptive resource management. Information is systematically interchanged between all components involved in the management task. It is important to n ...
... ploit information concerning overall system behavior as well as application-specic information gained from static and dynamic analysis to achieve an adaptive resource management. Information is systematically interchanged between all components involved in the management task. It is important to n ...
ppt
... Memory-mapped I/O With memory-mapped I/O, one address space is divided into two parts. — Some addresses refer to physical memory locations. — Other addresses actually reference peripherals. For example, my old Apple IIe had a 16-bit address bus which could access a whole 64KB of memory. — Addre ...
... Memory-mapped I/O With memory-mapped I/O, one address space is divided into two parts. — Some addresses refer to physical memory locations. — Other addresses actually reference peripherals. For example, my old Apple IIe had a 16-bit address bus which could access a whole 64KB of memory. — Addre ...
05~Chapter 5_Target_..
... – better characterization: RISC machines are machines in which at least one new instruction can (in the absence of conflicts) be started every cycle (hardware clock tick) • all possible mechanisms have been exploited to minimize the duration of a cycle, and to maximize the number of functional units ...
... – better characterization: RISC machines are machines in which at least one new instruction can (in the absence of conflicts) be started every cycle (hardware clock tick) • all possible mechanisms have been exploited to minimize the duration of a cycle, and to maximize the number of functional units ...
Chapter 5
... – superscalar machines can issue (start) more than one instruction per cycle, if those instructions don't need the same functional units – for example, there might be two instruction fetch units, two instruction decode units, an integer unit, a floating point adder, and a floating point multiplier C ...
... – superscalar machines can issue (start) more than one instruction per cycle, if those instructions don't need the same functional units – for example, there might be two instruction fetch units, two instruction decode units, an integer unit, a floating point adder, and a floating point multiplier C ...
Slide 1
... and processor counts? If agglomeration replicates data, have you verified that this does not compromise the scalability of your algorithm by restricting the range of problem sizes or processor counts that it can address? Has agglomeration yielded tasks with similar computation and communication cost ...
... and processor counts? If agglomeration replicates data, have you verified that this does not compromise the scalability of your algorithm by restricting the range of problem sizes or processor counts that it can address? Has agglomeration yielded tasks with similar computation and communication cost ...
Document
... Main frame computers is not a single computer but it may have more than one CPU or these may be a centre with multiple computers. Uses Mainframe computer might supports 1000 of users such as worldwide airline reservation system. A number of programs may be run on mainframe computer at a time for dif ...
... Main frame computers is not a single computer but it may have more than one CPU or these may be a centre with multiple computers. Uses Mainframe computer might supports 1000 of users such as worldwide airline reservation system. A number of programs may be run on mainframe computer at a time for dif ...
rMPI An MPI-Compliant Message Passing Library for Tiled
... • Some multi-cores offer… – tightly integrated on-chip networks – direct access to hardware resources (no OS layers) – fast interrupts MIT Raw Processor used for experimentation and validation ...
... • Some multi-cores offer… – tightly integrated on-chip networks – direct access to hardware resources (no OS layers) – fast interrupts MIT Raw Processor used for experimentation and validation ...
5 Generations of Computers
... The transistor was far superior to the vacuum tube, allowing computers to become smaller, faster, cheaper, more energy-efficient and more reliable than their first-generation predecessors. Though the transistor still generated a great deal of heat that subjected the computer to damage, it was a vast ...
... The transistor was far superior to the vacuum tube, allowing computers to become smaller, faster, cheaper, more energy-efficient and more reliable than their first-generation predecessors. Though the transistor still generated a great deal of heat that subjected the computer to damage, it was a vast ...
MICROPROCESSOR SYSTEMS MICROPROCESSOR SYSTEMS
... • To study the 8085 microprocessor architecture and relate that knowledge in the design of microprocessor based systems. • To learn design techniques for designing memory and I/O for microprocessor based systems. • To study the 8085 instructions set and apply that knowledge to the design of systems. ...
... • To study the 8085 microprocessor architecture and relate that knowledge in the design of microprocessor based systems. • To learn design techniques for designing memory and I/O for microprocessor based systems. • To study the 8085 instructions set and apply that knowledge to the design of systems. ...
Multicore OSes: Looking Forward from 1991, er, 2011 Harvard University Abstract
... ensuing software issues that we expect to see in multicore systems. Rather than waste time repeating that history, we should look at where that work led. Parallel supercomputers began with shared memory multiprocessor designs much like today’s four- and six-core boxes. They have developed into massi ...
... ensuing software issues that we expect to see in multicore systems. Rather than waste time repeating that history, we should look at where that work led. Parallel supercomputers began with shared memory multiprocessor designs much like today’s four- and six-core boxes. They have developed into massi ...
Slides
... The previous empty class will compile, but it will not run We need to give our class a starting point The starting point for any Java program is a main() ...
... The previous empty class will compile, but it will not run We need to give our class a starting point The starting point for any Java program is a main() ...
Lecture 1 – Introduction
... memory Exchange of messages used to pass data APIs Message Passing Interface (MPI) Parallel Virtual Machine (PVM) ...
... memory Exchange of messages used to pass data APIs Message Passing Interface (MPI) Parallel Virtual Machine (PVM) ...
CH3
... system provide loaders. Debugging systems for either higherlevel languages or machine language are needed also. Communications: These programs provide the mechanism for creating virtual connections among processes, users, and different computer systems. They allow users to send messages to one ano ...
... system provide loaders. Debugging systems for either higherlevel languages or machine language are needed also. Communications: These programs provide the mechanism for creating virtual connections among processes, users, and different computer systems. They allow users to send messages to one ano ...
The 5 generations of computers
... and more reliable than their first-generation predecessors. Though the transistor still generated a great deal of heat that subjected the computer to damage, it was a vast improvement over the vacuum tube. Second-generation computers still relied on punched cards for input and printouts for output. ...
... and more reliable than their first-generation predecessors. Though the transistor still generated a great deal of heat that subjected the computer to damage, it was a vast improvement over the vacuum tube. Second-generation computers still relied on punched cards for input and printouts for output. ...
Introduction (in )
... » Copies code file into memory and launches the program Concordia University ...
... » Copies code file into memory and launches the program Concordia University ...
Introduction (in ) - ECE Concordia
... Networking common. – Workstations: Systems with higher computational power (processor, memory and storage augmented when compared to PC). Networking very common. – Mainframes: Systems designed for large data management and high power computing. Networked almost always. ...
... Networking common. – Workstations: Systems with higher computational power (processor, memory and storage augmented when compared to PC). Networking very common. – Mainframes: Systems designed for large data management and high power computing. Networked almost always. ...
Supercomputer architecture
Approaches to supercomputer architecture have taken dramatic turns since the earliest systems were introduced in the 1960s. Early supercomputer architectures pioneered by Seymour Cray relied on compact innovative designs and local parallelism to achieve superior computational peak performance. However, in time the demand for increased computational power ushered in the age of massively parallel systems.While the supercomputers of the 1970s used only a few processors, in the 1990s, machines with thousands of processors began to appear and by the end of the 20th century, massively parallel supercomputers with tens of thousands of ""off-the-shelf"" processors were the norm. Supercomputers of the 21st century can use over 100,000 processors (some being graphic units) connected by fast connections.Throughout the decades, the management of heat density has remained a key issue for most centralized supercomputers. The large amount of heat generated by a system may also have other effects, such as reducing the lifetime of other system components. There have been diverse approaches to heat management, from pumping Fluorinert through the system, to a hybrid liquid-air cooling system or air cooling with normal air conditioning temperatures.Systems with a massive number of processors generally take one of two paths: in one approach, e.g., in grid computing the processing power of a large number of computers in distributed, diverse administrative domains, is opportunistically used whenever a computer is available. In another approach, a large number of processors are used in close proximity to each other, e.g., in a computer cluster. In such a centralized massively parallel system the speed and flexibility of the interconnect becomes very important, and modern supercomputers have used various approaches ranging from enhanced Infiniband systems to three-dimensional torus interconnects.