topic Multi Processor in Intel® Fortran Compiler

Multi Processor

truelies — Thu, 27 Jan 2011 21:06:42 GMT

Does Intel Fortran Composer XE 2011 for Windows support multi processor? What should I do to modify a code to support multi processor? Thanks.

Multi Processor

Steven_L_Intel1 — Thu, 27 Jan 2011 22:35:31 GMT

Yes, it does. There are many ways to take advantage of multiprocessors. The simplest is adding the /Qparallel option, but by itself, it may not get you a lot. The Guided Auto Parallelization feature can help you with suggestions for code changes that improve autoparallelization. The DO CONCURRENT construct also works with /Qparallel.

Then there is OpenMP, which requires code changes. There is a large aection of the "Optimizing Applications" documentation dealing with parallelization.

There is also the Coarray feature from Fortran 2008, which supports multiprocessors by default, but requires the most code changes.

Multi Processor

truelies — Fri, 28 Jan 2011 14:53:42 GMT

Thanks Steve. Do you have a document on those?

Found it: http://software.intel.com/sites/products/documentation/hpc/compilerpro/en-us/cpp/win/compiler_c/optaps/common/optaps_intro.htm?wapkw=%28Optimizing+Applications%29

but this one is for Intel C++, anything for Intel Fortran?

Multi Processor

Wendy_Doerner__Intel — Fri, 28 Jan 2011 21:38:35 GMT

All of the advice and switches in this article apply to Fortran also.

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Wendy

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Multi Processor

Steven_L_Intel1 — Fri, 28 Jan 2011 23:49:14 GMT

You can read the Fortran documentation here, if you don't have the product installed.

Multi Processor

truelies — Tue, 01 Feb 2011 20:44:37 GMT

Steve,

I can't find anyone for multi processor, could you tell me which one? Thanks

Multi Processor

Wendy_Doerner__Intel — Tue, 01 Feb 2011 21:04:04 GMT

All our products apply to mulit processor. The document which focuses on the Fortran Windows Compiler is here:

http://software.intel.com/sites/products/documentation/hpc/composerxe/en-us/fortran/win/index.htm

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Wendy

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Multi Processor

truelies — Mon, 07 Feb 2011 19:52:02 GMT

This link includes all fortran documents. I can see

Optimizing Applications

and

Creating Parallel Applications

Which one is for how to change a code to multi processor in Intel Fortran? Thanks.

Multi Processor

Steven_L_Intel1 — Mon, 07 Feb 2011 20:28:48 GMT

The "Creating Parallel Applications" link is more relevant. The "Optimizing" link is for general optimization topics.