[Lapack] Patches to test suite of BLAS for LAPACK-3.4.0
From: James, Rodney
Date: Fri, 20 Jan 2012 09:34:33 -0700
We have implemented fixes to the "epsilon" problems in the BLAS test suite
based on your suggested solutions in the patch you supplied.
The new code is available immediately from the LAPACK SVN server here:
svn co https://icl.cs.utk.edu/svn/lapack-dev/lapack/trunk/BLAS/TESTING
and will be included in the next release of LAPACK.
Thanks again for pointing out these issues, and for providing a solution.
On 18/01/12 22:40, Harald Anlauf wrote:
some tests of the BLAS fail on Intel and AMD processors when
compiling with high optimization level (e.g. gfortran -Ofast).
The reason is that the determination of machine precision in
these tests only works without optimization.
I recommend to always use the Fortran 90+ intrinsic EPSILON()
See the attached for details.