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Re: external BLAS library with gfortran 4.1 or 4.4 on rhel5
- From: Tim Prince <n8tm at aol dot com>
- To: gcc-help at gcc dot gnu dot org
- Date: Wed, 14 Mar 2012 07:22:15 -0400
- Subject: Re: external BLAS library with gfortran 4.1 or 4.4 on rhel5
- References: <C41074942BD67545B9BC85748B2D38D31671B5A9@EX-MBX-PRO-03.mcs.usyd.edu.au> <C41074942BD67545B9BC85748B2D38D31671B5E4@EX-MBX-PRO-03.mcs.usyd.edu.au>
- Reply-to: tprince at computer dot org
On 3/13/2012 10:42 PM, Matthew Hobbs wrote:
I want to be able to use an external BLAS library with some Fortran programs we are using. I am using a rhel5 system with two versions of gfortran available:
1) GNU Fortran (GCC) 4.1.2 20080704 (Red Hat 4.1.2-52) - this does not have the "-fexternal-blas" option so am I right to think that with this version it is not possible to use an external blas library (provided by e.g. atlas)?
-fexternal-blas does nothing more than translate MATMUL into a BLAS
?GEMM call. It has no effect on explicit BLAS function calls. Either
way, you can use any BLAS-compatible library, such as libblas which
comes with linux, Atlas, Intel MKL, AMD BLAS, ...
You really should upgrade to a more recent gfortran.
--
Tim Prince