y cases where R's use (and checks) actually have
> reveiled not only inaccuracies but sometimes also bugs in
> LAPACK/BLAS implementations where it sometimes seems, some are
> only interested in speed, rather than correctness.
>
> Martin Maechler
> ETH Zurich
>
> > On 01/
ces. It is not common for optimized BLAS implementations to
> fail reg-BLAS.R tests, but it is common for them to report numerical
> differences in tests of various recommended packages where more complicated
> computations are done (e.g. nlme), on various platforms.
>
> Best
> Tomas
&g
We build R with dynamically linked BLAS and LAPACK libraries, in order
to use the AMD Core Math Library (ACML) multi-threaded implementation
of these routines on our 64 core servers. This is great, and our
users really appreciate it.
However, when building like this, make check fails on the
