problems with MatLoad

Andreas Grassl Andreas.Grassl at
Wed Apr 15 10:42:11 CDT 2009

Andreas Grassl schrieb:
> Matthew Knepley schrieb:
>> The Viewer has COMM_WORLD, but you are reading a matrix with COMM_SELF.
>> You need to create
>> a separate viewer for each process to do what you want.
> Thank you for the fast answer. I resolved this issue now, but how could i gather
> the Matrix from COMM_SELF to COMM_WORLD. I searched for functions doing such
> matrix copying, but MatConvert and MatCopy act on the same communicator.

I think I solved this as well, I simply invoked MatGetValues on one communicator
and MatSetValues on the other.

Kind Regards,


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