topic Re: ScaLAPACK Example in C in Intel® oneAPI Math Kernel Library

ScaLAPACK Example in C

schmmd — Wed, 25 Mar 2009 01:26:07 GMT

Does anyone know of a ScaLAPACK example in C? I need to write a simple program that runs psgesvd on a single machine but utilizing all of the cores. Is this the write approach to run an svd decomposition using multiple cores? I do not believe that sgesvd takes advantage of more than one core (at least, in my example it does not).

Re: ScaLAPACK Example in C

ArturGuzik — Wed, 25 Mar 2009 02:05:38 GMT

Quoting - schmmd

Hi,

you don't need ScaLAPACk to do it (on single machine). Just "simple" MKL LAPACK and linking with libiomp5 lib. See the docs (Chapter 5 of User's Guide). Which platform (IA32/x64) are you on?

A.

Re: ScaLAPACK Example in C

schmmd — Wed, 25 Mar 2009 18:10:58 GMT

Well, that's great news that I can just link with that library. I am running on x64. Thanks for the reference to the chapter in the user guide too. I will figure this out.

If anyone does know of a C example for ScaLAPACK I would still be interested, however. I will likely need to expand my SVD to a cluster.

Re: ScaLAPACK Example in C

Gennady_F_Intel — Wed, 25 Mar 2009 18:26:53 GMT

There are no such examples for ScaLapack functionality.
--Gennady

Re: ScaLAPACK Example in C

Tabrez_Ali — Thu, 26 Mar 2009 12:48:11 GMT

Quoting - schmmd

Here's a trivial Fortran example. You should be able to figure out the equivalent C code easily.