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OpenMP Tutorial Part 2: Advanced OpenMP PowerPoint PPT Presentation

OpenMP Tutorial Part 2: Advanced OpenMP - OpenMP: The more subtle/advanced stuff. OpenMP case studies ... An example showing a static code that uses threadprivate data between parallel regions. ...

OpenMP: The more subtle/advanced stuff. OpenMP case studies ... An example showing a static code that uses threadprivate data between parallel regions. ...

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OpenMP Tutorial Part 1: The Core Elements of OpenMP PowerPoint PPT Presentation

OpenMP Tutorial Part 1: The Core Elements of OpenMP - decrease the runtime for the solution to a problem. Increase the size of the problem that can be solved. ... KAI, PGI, PSR, APR. Applications vendors ...

decrease the runtime for the solution to a problem. Increase the size of the problem that can be solved. ... KAI, PGI, PSR, APR. Applications vendors ...

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OpenMP???? - Title: Author: AN Hong Last modified by: lynn Created Date: 4/4/2004 1:42:01 PM Document presentation format:

Title: Author: AN Hong Last modified by: lynn Created Date: 4/4/2004 1:42:01 PM Document presentation format:

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OpenMP - Title: No Slide Title Author: simone Last modified by: Laboratorio de Bioinformatica Created Date: 4/2/2001 7:01:51 PM Document presentation format

Title: No Slide Title Author: simone Last modified by: Laboratorio de Bioinformatica Created Date: 4/2/2001 7:01:51 PM Document presentation format

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OpenMP - OpenMP Mark Reed UNC Research Computing markreed@unc.edu * * * * * * * * * * * * * * * * * * * * * * * * * * !$OMP PARALLEL DO do i=1,n enddo ...

OpenMP Mark Reed UNC Research Computing markreed@unc.edu * * * * * * * * * * * * * * * * * * * * * * * * * * !$OMP PARALLEL DO do i=1,n enddo ...

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OpenMP - ?????? shared-?????????? ? ?????????? ???????????? ????? ????? ???? ??????????? ... ????????? ?????? ??? work-sharing ??????????? (? ????? ?????? ????????????????? ...

?????? shared-?????????? ? ?????????? ???????????? ????? ????? ???? ??????????? ... ????????? ?????? ??? work-sharing ??????????? (? ????? ?????? ????????????????? ...

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OpenMP - schedule(static, chunk_size) iterations/chunk_size chunks distributed in round-robin ... at runtime. Implementation dependent. for - Example. include omp.h ...

schedule(static, chunk_size) iterations/chunk_size chunks distributed in round-robin ... at runtime. Implementation dependent. for - Example. include omp.h ...

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Introduction to OpenMP PowerPoint PPT Presentation

Introduction to OpenMP - Introduction to OpenMP www.openmp.org Motivation Parallel machines are abundant Servers are 2-8 way SMPs and more Upcoming processors are multicore parallel ...

Introduction to OpenMP www.openmp.org Motivation Parallel machines are abundant Servers are 2-8 way SMPs and more Upcoming processors are multicore parallel ...

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OpenMP - Shared Memory Parallelism Multithreaded code (what s a thread?) OpenMP == Open Multi Processing Just like MPI, OpenMP is a standard.

Shared Memory Parallelism Multithreaded code (what s a thread?) OpenMP == Open Multi Processing Just like MPI, OpenMP is a standard.

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OpenMP - #pragma omp for private(wl) Create variable 'deltaT' in scalar part. double deltaT; ... Create a temporary array. make it bigger and/or more threads. When do ...

#pragma omp for private(wl) Create variable 'deltaT' in scalar part. double deltaT; ... Create a temporary array. make it bigger and/or more threads. When do ...

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Introduction to OpenMP Programming PowerPoint PPT Presentation

Introduction to OpenMP Programming - ... 0 3 2 0 1 0 3 0 1 3 Run cpuinfo command bash: $ cpuinfo Architecture : x86_64 Hyperthreading: disabled Packages : 2 Cores : 4 Processors : 4 ...

... 0 3 2 0 1 0 3 0 1 3 Run cpuinfo command bash: $ cpuinfo Architecture : x86_64 Hyperthreading: disabled Packages : 2 Cores : 4 Processors : 4 ...

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Introduction to OpenMP - Use library routines/compiler directives with an existing sequential language ... is efficient, but it is easy to stomp on memory and create race conditions. ...

Use library routines/compiler directives with an existing sequential language ... is efficient, but it is easy to stomp on memory and create race conditions. ...

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Effective Use of OpenMP in Games PowerPoint PPT Presentation

Effective Use of OpenMP in Games - Effective Use of OpenMP in Games Pete Isensee Lead Developer Xbox Advanced Technology Group Agenda Why OpenMP Examples How it really works Performance, common ...

Effective Use of OpenMP in Games Pete Isensee Lead Developer Xbox Advanced Technology Group Agenda Why OpenMP Examples How it really works Performance, common ...

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Advanced Parallel Programming with OpenMP PowerPoint PPT Presentation

Advanced Parallel Programming with OpenMP - Advanced OpenMP, SC'2000. 1. Advanced Parallel Programming with ... SC'2000 Tutorial Agenda. OpenMP: A Quick Recap. OpenMP Case Studies. including ... malloc ...

Advanced OpenMP, SC'2000. 1. Advanced Parallel Programming with ... SC'2000 Tutorial Agenda. OpenMP: A Quick Recap. OpenMP Case Studies. including ... malloc ...

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OpenMP: Introduction PowerPoint PPT Presentation

OpenMP: Introduction - Problem: Mandelbrot Set. Set of points in the complex plane. which remain bounded ... OpenMP-Mandelbrot.cc. Execute and Time. Sequential and parallel ...

Problem: Mandelbrot Set. Set of points in the complex plane. which remain bounded ... OpenMP-Mandelbrot.cc. Execute and Time. Sequential and parallel ...

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OpenMP - Number of threads is set by the system the program is running on, not the programmer ... We rarely want all the threads to do exactly the same thing ...

Number of threads is set by the system the program is running on, not the programmer ... We rarely want all the threads to do exactly the same thing ...

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OpenMP%20II - using locks and barriers. 4. So, do we understand the prog. Model? Consider the following code: ... Sequential consistency ... their intuitions (for most people) ...

using locks and barriers. 4. So, do we understand the prog. Model? Consider the following code: ... Sequential consistency ... their intuitions (for most people) ...

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Parallel Programming with MPI and OpenMP PowerPoint PPT Presentation

Parallel Programming with MPI and OpenMP - Title: Parallel Programming in C with the Message Passing Interface Author: Michael J. Quinn Last modified by: Fran ois Lemieux Created Date: 12/21/2001 12:01:37 AM

Title: Parallel Programming in C with the Message Passing Interface Author: Michael J. Quinn Last modified by: Fran ois Lemieux Created Date: 12/21/2001 12:01:37 AM

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OpenMP - Each thread grabs 'chunk' iterations off a queue until all iterations have been handled. ... Threads dynamically grab blocks of iterations. ...

Each thread grabs 'chunk' iterations off a queue until all iterations have been handled. ... Threads dynamically grab blocks of iterations. ...

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??????????? ?? ??? ????????? ?????????? Hyper-Threading ? ??????? OpenMP PowerPoint PPT Presentation

??????????? ?? ??? ????????? ?????????? Hyper-Threading ? ??????? OpenMP - Hyper-Threading OpenMP Intel Threading Toolkit

Hyper-Threading OpenMP Intel Threading Toolkit

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Shared Memory Programming: Threads and OpenMP Lecture 6 PowerPoint PPT Presentation

Shared Memory Programming: Threads and OpenMP Lecture 6 - Slides by Jim Demmel and Kathy Yelick ... Threads and OpenMP Lecture 6 James Demmel www.cs.berkeley.edu/~demmel/cs267_Spr13/

Slides by Jim Demmel and Kathy Yelick ... Threads and OpenMP Lecture 6 James Demmel www.cs.berkeley.edu/~demmel/cs267_Spr13/

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OpenMP - Most of the API : Control constructs, Data attribute constructs ... By default, the same number of threads are used to execute each parallel region ...

Most of the API : Control constructs, Data attribute constructs ... By default, the same number of threads are used to execute each parallel region ...

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Introductions to Parallel Programming Using OpenMP PowerPoint PPT Presentation

Introductions to Parallel Programming Using OpenMP - OpenMP is a set of extensions to Fortran/C/C . OpenMP contains compiler directives, library routines and environment variables. ... Some Buggy Codes ...

OpenMP is a set of extensions to Fortran/C/C . OpenMP contains compiler directives, library routines and environment variables. ... Some Buggy Codes ...

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Executing OpenMP Programs PowerPoint PPT Presentation

Executing OpenMP Programs - System Summary. OpenMP on Top Gun. Environment Set-up - 1 ... Example: for the Omni C compiler and Intel C Compiler % which omcc /usr/local/Omni/bin/omcc ...

System Summary. OpenMP on Top Gun. Environment Set-up - 1 ... Example: for the Omni C compiler and Intel C Compiler % which omcc /usr/local/Omni/bin/omcc ...

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Parallel Programming with MPI and OpenMP - Potentially parallel computations: (n) phi. Communication operations: (n,p) kappa. Speedup Expression (Speedup: si) (n)/p (n,p) (n)/p (n,p) Speedup Plot ' ...

Potentially parallel computations: (n) phi. Communication operations: (n,p) kappa. Speedup Expression (Speedup: si) (n)/p (n,p) (n)/p (n,p) Speedup Plot ' ...

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Parallel Programming with MPI and OpenMP - Parallel Programming with MPI and OpenMP Michael J. Quinn Example 2 p 2 3 4 5 6 7 1.9 2.6 3.2 3.7 4.1 4.5 8 4.7 What is the primary reason for speedup of only 4.7 on ...

Parallel Programming with MPI and OpenMP Michael J. Quinn Example 2 p 2 3 4 5 6 7 1.9 2.6 3.2 3.7 4.1 4.5 8 4.7 What is the primary reason for speedup of only 4.7 on ...

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MPI and OpenMP PowerPoint PPT Presentation

MPI and OpenMP - Title: OpenMP Author: user Last modified by: Kahim Created Date: 3/21/2005 2:44:47 AM Document presentation format: Company: University of Kentucky

Title: OpenMP Author: user Last modified by: Kahim Created Date: 3/21/2005 2:44:47 AM Document presentation format: Company: University of Kentucky

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Shared Memory Programming: Threads and OpenMP PowerPoint PPT Presentation

Shared Memory Programming: Threads and OpenMP - Slides by Jim Demmel, David Culler, Horst Simon, and Erich Strohmaier

Slides by Jim Demmel, David Culler, Horst Simon, and Erich Strohmaier

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Shared Memory Programming: Threads and OpenMP Lecture 6 - ... Shared Memory Program is a collection of threads of control. Can be created dynamically, mid-execution, in some languages Each thread has a set of private ...

... Shared Memory Program is a collection of threads of control. Can be created dynamically, mid-execution, in some languages Each thread has a set of private ...

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OpenMP - ... language (FORTRAN, C) for parallel programming on a shred memory machine. ... Used on shared memory machines as opposed to distributed memory machines. ...

... language (FORTRAN, C) for parallel programming on a shred memory machine. ... Used on shared memory machines as opposed to distributed memory machines. ...

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Shared Memory Programming: Threads and OpenMP Lecture 6 - Slides by Jim Demmel and Kathy Yelick ... Threads and OpenMP Lecture 6 James Demmel www.cs.berkeley.edu/~demmel/cs267_Spr14/

Slides by Jim Demmel and Kathy Yelick ... Threads and OpenMP Lecture 6 James Demmel www.cs.berkeley.edu/~demmel/cs267_Spr14/

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Introduction to OpenMP - In MPI, all threads are active all the time ... Child threads are spawned and released as needed. ... loops split between threads will not necessarily execute ...

In MPI, all threads are active all the time ... Child threads are spawned and released as needed. ... loops split between threads will not necessarily execute ...

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Shared Memory Programming: Threads and OpenMP Lecture 6 - Title: Shared Memory Parallel Programming Author: Kathy Yelick Description: Slides by Jim Demmel and Kathy Yelick Last modified by: James Demmel Created Date

Title: Shared Memory Parallel Programming Author: Kathy Yelick Description: Slides by Jim Demmel and Kathy Yelick Last modified by: James Demmel Created Date

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Introduction to OpenMP - Open specifications for Multi Processing via collaborative work between ... is not intrusive to the orginal serial code: instructions appear in comment ...

Open specifications for Multi Processing via collaborative work between ... is not intrusive to the orginal serial code: instructions appear in comment ...

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OpenMP 3.0 Feature: Error Detection Capability PowerPoint PPT Presentation

OpenMP 3.0 Feature: Error Detection Capability - Idea 2: Error Code Based Approach. Add a new clause to directives. This one sets an error code in a passed address of type OMPError when error occurs ...

Idea 2: Error Code Based Approach. Add a new clause to directives. This one sets an error code in a passed address of type OMPError when error occurs ...

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Parallel Programming in C with MPI and OpenMP PowerPoint PPT Presentation

Parallel Programming in C with MPI and OpenMP - Agglomerate groups of rows. Create one task per MPI process. Complexity Analysis ... Agglomerate primitive tasks into rectangular blocks. Processes form a 2-D grid ...

Agglomerate groups of rows. Create one task per MPI process. Complexity Analysis ... Agglomerate primitive tasks into rectangular blocks. Processes form a 2-D grid ...

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cOMPunity: The OpenMP Community PowerPoint PPT Presentation

cOMPunity: The OpenMP Community - Alistair Rendell (Australasia) Eduard Ayguade (OpenMP language) Mike Voss (workshops) ... available at http://www.epcc.ed.ac.uk/research/openmpbench ...

Alistair Rendell (Australasia) Eduard Ayguade (OpenMP language) Mike Voss (workshops) ... available at http://www.epcc.ed.ac.uk/research/openmpbench ...

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Parallel Programming in C with MPI and OpenMP - Everyday Reasons. Available local networked workstations and Grid resources should ... Cold War. Nuclear weapon design. Intelligence gathering. Code-breaking ...

Everyday Reasons. Available local networked workstations and Grid resources should ... Cold War. Nuclear weapon design. Intelligence gathering. Code-breaking ...

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Improving OpenMP Performance PowerPoint PPT Presentation

Improving OpenMP Performance - Using Compiler Features to Improve Performance Most of the loop optimization techniques ... A different problem arises when the compiler is not able to improve memory ...

Using Compiler Features to Improve Performance Most of the loop optimization techniques ... A different problem arises when the compiler is not able to improve memory ...

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OpenMP Parallelization Tips PowerPoint PPT Presentation

OpenMP Parallelization Tips - Use reduction as much as possible #pragma omp for reduction ... Papi. Kojak. Opari. Debugging. Much harder than sequential. Switch data view between threads ...

Use reduction as much as possible #pragma omp for reduction ... Papi. Kojak. Opari. Debugging. Much harder than sequential. Switch data view between threads ...

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Parallel Programming With OpenMP PowerPoint PPT Presentation

Parallel Programming With OpenMP - General Code Structure & Sample Examples. Pros & Cons Of OpenMP ... Test Done on 2 GHz Intel Core 2 Duo With 1 GB 667 MHz DDR2 SDRAM ...

General Code Structure & Sample Examples. Pros & Cons Of OpenMP ... Test Done on 2 GHz Intel Core 2 Duo With 1 GB 667 MHz DDR2 SDRAM ...

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Parallel Programming in C with MPI and OpenMP - Parallel Programming in C with MPI and OpenMP Michael J. Quinn Chapter 8 Matrix-vector Multiplication Chapter Objectives Review matrix-vector multiplicaiton Propose ...

Parallel Programming in C with MPI and OpenMP Michael J. Quinn Chapter 8 Matrix-vector Multiplication Chapter Objectives Review matrix-vector multiplicaiton Propose ...

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Shared Memory Programming: Threads and OpenMP Lecture 6 - ... (physical registers, cache, memory ... Threads and OpenMP Lecture 6 Outline Parallel Programming with Threads Recall Programming Model 1: Shared Memory ...

... (physical registers, cache, memory ... Threads and OpenMP Lecture 6 Outline Parallel Programming with Threads Recall Programming Model 1: Shared Memory ...

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Comparing Cray Tasking and OpenMP NERSC User Services PowerPoint PPT Presentation

Comparing Cray Tasking and OpenMP NERSC User Services - NERSC User Services Overview of Cray Tasking Overview of OpenMP Directives Comparison Mixing OpenMP with MPI Cray Shared-Memory Multiprocessors 1982: X-MP 1, 2, or 4 ...

NERSC User Services Overview of Cray Tasking Overview of OpenMP Directives Comparison Mixing OpenMP with MPI Cray Shared-Memory Multiprocessors 1982: X-MP 1, 2, or 4 ...

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Shared Memory Programming: Threads and OpenMP Lecture 6 - Performance comparison Summary CS267 Lecture 6 * Parallel Programming with Threads CS267 Lecture 6 * Recall Programming Model 1: Shared Memory ... Memory/Cache ...

Performance comparison Summary CS267 Lecture 6 * Parallel Programming with Threads CS267 Lecture 6 * Recall Programming Model 1: Shared Memory ... Memory/Cache ...

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Shared Memory Programming with OpenMP PowerPoint PPT Presentation

Shared Memory Programming with OpenMP - The private ( variable list ) clause directs the compiler to make ... area = (4.0/(1.0 x*x)); pi = h * area; Pi code: OpenMP INCORRECT. h = 1.0 / (double) n; ...

The private ( variable list ) clause directs the compiler to make ... area = (4.0/(1.0 x*x)); pi = h * area; Pi code: OpenMP INCORRECT. h = 1.0 / (double) n; ...

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Parallel Programming with MPI and OpenMP - Introducing point-to-point communications. Reading and printing 2-D matrices ... Pop Quiz. Why don't we input the entire file at once. and then scatter its ...

Introducing point-to-point communications. Reading and printing 2-D matrices ... Pop Quiz. Why don't we input the entire file at once. and then scatter its ...

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Parallel Computing Project (OPENMP using LINUX for Parallel application) PowerPoint PPT Presentation

Parallel Computing Project (OPENMP using LINUX for Parallel application) - The program generated by the compiler is executed by multiple threads ... How to assign code in parallel regions to threads ... into multi-threaded code ...

The program generated by the compiler is executed by multiple threads ... How to assign code in parallel regions to threads ... into multi-threaded code ...

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Matrix Transpose Results with Hybrid OpenMP / MPI PowerPoint PPT Presentation

Matrix Transpose Results with Hybrid OpenMP / MPI - Matrix Transpose Results with Hybrid OpenMP / MPI O. Haan Gesellschaft f r wissenschaftliche Datenverarbeitung G ttingen, Germany ( GWDG ) SCICOMP 2000, SDSC, La Jolla

Matrix Transpose Results with Hybrid OpenMP / MPI O. Haan Gesellschaft f r wissenschaftliche Datenverarbeitung G ttingen, Germany ( GWDG ) SCICOMP 2000, SDSC, La Jolla

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Shared Memory Programming OpenMP and Threads PowerPoint PPT Presentation

Shared Memory Programming OpenMP and Threads - See http://www.nersc.gov/nusers/help/tutorials/openmp ... on OpenMP derived from: U.Wisconsin tutorial, which in turn were from LLNL, ...

See http://www.nersc.gov/nusers/help/tutorials/openmp ... on OpenMP derived from: U.Wisconsin tutorial, which in turn were from LLNL, ...

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OpenMP 3'0 - OpenMP 3.0. In Courtesy of OpenMP committee and Federico ... Geez!!!' Almost trivial to do for worksharing constructs. What about code in parallel region? ...

OpenMP 3.0. In Courtesy of OpenMP committee and Federico ... Geez!!!' Almost trivial to do for worksharing constructs. What about code in parallel region? ...

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Introduction to OpenMP - Threads all start at same time then synchronize at a barrier at the end to ... firstprivate(var) and lastprivate(var) clauses. x[0] ... variable set and then ...

Threads all start at same time then synchronize at a barrier at the end to ... firstprivate(var) and lastprivate(var) clauses. x[0] ... variable set and then ...

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Study of OpenMP with MPI for IFS PowerPoint PPT Presentation

Study of OpenMP with MPI for IFS - John Hague (IBM UK) & Deborah Salmond (ECMWF) IFS. IFS (Integrated Forecast System) contains : ... Forecast Days/Day for T511. OpenMP MPI. MPI. only. 1024 ...

John Hague (IBM UK) & Deborah Salmond (ECMWF) IFS. IFS (Integrated Forecast System) contains : ... Forecast Days/Day for T511. OpenMP MPI. MPI. only. 1024 ...

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Introduction to OpenMP - Open specifications for Multi Processing via ... (implied barrier) ... No implied barrier on entry, implied barrier on exit (unless specified otherwise) ...

Open specifications for Multi Processing via ... (implied barrier) ... No implied barrier on entry, implied barrier on exit (unless specified otherwise) ...

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OpenMP reading Chp 7'10 PowerPoint PPT Presentation

OpenMP reading Chp 7'10 - There are some drawbacks to using directives as well. ... Finally, since explicit threading is used more widely than OpenMP, tools and ...

There are some drawbacks to using directives as well. ... Finally, since explicit threading is used more widely than OpenMP, tools and ...

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An Introduction to OpenMP PowerPoint PPT Presentation

An Introduction to OpenMP - OpenMP provides a 'relaxed-consistency' and 'temporary' view of thread memory (in their words) ... required to maintain exact consistency with real memory all ...

OpenMP provides a 'relaxed-consistency' and 'temporary' view of thread memory (in their words) ... required to maintain exact consistency with real memory all ...

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Openmp PowerPoint PPT Presentations