[petsc-dev] PETSc GPU capabilities

[Paul Mullowney]

We wrote a custom sparse triangular solve. In some case it performed a 
little better (at most 15-20%). Sometimes it performed worse by a 
similar amount. I may revive our custom solve at some point. For now, 
Petsc only uses CUSPARSE.

-Paul
> Is this a custom sparse triangular solve or is it from CUSPARSE? If 
> different, how does the performance compare with the CUSPARSE 
> implementation?