[petsc-dev] Branches with additional features

Barry Smith bsmith at mcs.anl.gov
Mon May 29 19:45:27 CDT 2017


   I have added MatDensePlaceArray() and MatDenseResetArray() in https://bitbucket.org/petsc/petsc/branch/barry/feature-matdenseplacearray

   Barry

> On May 29, 2017, at 3:46 PM, Pierre Jolivet <pierre.jolivet at enseeiht.fr> wrote:
> 
> 
>> On 29 May 2017, at 22:20, Jed Brown <jed at jedbrown.org> wrote:
>> 
>>> That makes perfect sense (assuming I'm not wrong about the 
>>> MatAssemblyBegin/MatAssemblyEnd). MatSetUpMultiply_MPIDense would still 
>>> be called at each iteration but I doubt this is too costly.
>> 
>> It creates a VecScatter so it isn't nothing (in terms of parallel
>> semantics), but I'd like to see profiling data before chasing this
>> around.
> 
> Sure, I'll use that and will look out for any occurrence of "MatDensePlaceArray" (or stuff like that) in the logs, in case it is implemented.
> Thanks!




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