[petsc-users] sequential partitioning?

[Dominik Szczerba]

Thanks, this I had no chance to know. Is also true for MatPartitioningCreate?
Which one should be run collectively and which one only on master? My
code is along this line:

MatCreateMPIAdj
MatPartitioningCreate
MatPartitioningSetAdjacency
MatPartitioningSetNParts
MatPartitioningApply

Many thanks!
Dominik

On Sat, Oct 22, 2011 at 4:05 PM, Barry Smith <bsmith at mcs.anl.gov> wrote:
>
>   You need to create the MPIAdj matrix with PETSC_COMM_SELF   not COMM_WORLD
>
>   Barry
>
> On Oct 22, 2011, at 8:45 AM, Dominik Szczerba wrote:
>
>> I do not seem to find any guidance on this subject in the docu.
>> I built petsc with chaco and party to attempt sequential partitioning,
>> where parmetis fails.
>> However, I get the error:
>>
>> [0]PETSC ERROR: No support for this operation for this object type!
>> [0]PETSC ERROR: Distributed matrix format MPIAdj is not supported for
>> sequential partitioners!
>>
>>
>> I do not seem to find a sequential equivalent of MatCreateMPIAdj...
>> Are there any examples how to perform partitioning sequentially?
>> My mesh/graph is located entirely on master.
>>
>> Thanks a lot,
>> Dominik
>
>