Multi Processor

[truelies]

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

[Steven_L_Intel1]

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.

[truelies]

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?

[Wendy_Doerner__Intel]

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

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Wendy

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[Steven_L_Intel1]

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

[truelies]

Steve,

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

[Wendy_Doerner__Intel]

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

Attaching or including files in a post

[truelies]

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.

[Steven_L_Intel1]

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