Regular gcc benchmark runs for sparse-matrix vector multiplication?

[Toon Moene]

It is probably helpful to ask this question on the GNU Fortran mailing 
list (copied here), as more Fortran developers are listening there ...

Two questions off-hand:

1. Do you have a small test case that shows the problem ?

2. Is this single- or multi-threaded code ?

On 12/13/18 10:31 PM, Harald Anlauf wrote:
> Hello,
> 
> is there a public gcc benchmark that checks for performance
> regressions in particular for sparse-matrix vector multiplication?
> 
> I've noticed (and confirmed by perf measurements) a significant
> performance drop on x86_64/Skylake from gfortran-8 to gfortran-9
> (current trunk version) for a code that uses both CSC and CSR
> storage.  gfortran-8 performance is the same as gfortran-7.
> 
> Thanks,
> Harald
> 

Kind regards,

-- 
Toon Moene - e-mail: toon@moene.org - phone: +31 346 214290
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