LAPACK Archives

[Lapack] Patches to test suite of BLAS for LAPACK-3.4.0

Dear Harald,

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 

and will be included in the next release of LAPACK.

Thanks again for pointing out these issues, and for providing a solution.


Rodney James

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()
where appropriate.

See the attached for details.


<Prev in Thread] Current Thread [Next in Thread>

For additional information you may use the LAPACK/ScaLAPACK Forum.
Or one of the mailing lists, or