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Re: [PATCH, gfortran testsuite]: Do not load denormals in gfortran.fortran_torture/intrinsic_nearest.f90
On Aug 22 2009, Steve Kargl wrote:
On Sat, Aug 22, 2009 at 07:20:48AM -0700, Tim Prince wrote:
>Most HPC systems use hard underflow, because it is faster.
This is likely to change a year a so from now, no doubt influenced by
gfortran not having adequate provision to control underflow setting, and
gcc programmers not caring to deal with it.
You know where to find the source code for GCC. I suspect
that more than one person will be indebted to you when you
submit your patch that addresses this issue.
Not, however, the HPC people. They will continue to use hard underflow
as long as it is faster. If soft underflow is faster, they use that. If
some ungodly hybrid is faster (as has occurred), they will use that.
Regards,
Nick Maclaren.