[petsc-dev] This has officially become too ugly to read

[Paul Mullowney]

The new code using CUSPARSE gives you triangular solves that are 
supported by Nvidia. They are as fast as what was in their previously. 
Advantage is that it's now fully supported by the vendor library.

The matrix multiplication is more succinct than what was in petsc-dev. 
Plus it has options for choosing storage format on the device for 
optimal performance.
You now have csr/coo/ell/dia formats ... Plus the SpMV scales across 
multiple GPUs now.

I am happy to remove printf's if that helps.

-Paul


> On Fri, Jan 20, 2012 at 4:37 PM, Barry Smith <bsmith at mcs.anl.gov 
> <mailto:bsmith at mcs.anl.gov>> wrote:
>
>
>     On Jan 20, 2012, at 4:31 PM, Matthew Knepley wrote:
>
>     > http://petsc.cs.iit.edu/petsc/petsc-dev/rev/2a4f352daf49
>     >
>     > What is going on here, and why can't it be done more succintly?
>
>       Hell its GPUs, what do you expect?
>
>       What particularly part do you feel is overly complex and could
>     be more succintly?
>
>
> This checkin of fixes is larger than the entire prior implementation. 
> Why, what is better?
>
> There are a ton of new functions with obscure names (unless Some has a 
> meaning which
> escapes me).
>
> There seem to be a huge number of cases treated in enormous functions 
> rather than
> factoring them out.
>
>    Matt
>
>
>       Barry
>
>
>     >
>     >     Matt
>     >
>     > --
>     > What most experimenters take for granted before they begin their
>     experiments is infinitely more interesting than any results to
>     which their experiments lead.
>     > -- Norbert Wiener
>
>
>
>
> -- 
> What most experimenters take for granted before they begin their 
> experiments is infinitely more interesting than any results to which 
> their experiments lead.
> -- Norbert Wiener

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