[petsc-users] Question about GAMG and memory use

Jed Brown jed at jedbrown.org
Thu Mar 5 13:17:20 CST 2015

Barry Smith <bsmith at mcs.anl.gov> writes:

>   This should not happen, probably you are working with a MPIAIJ
>   matrix

Randall, it sounds like you are creating an MPIAIJ matrix even in
serial.  Meanwhile, GAMG creates a SeqAIJ prolongation operator (when
running in serial).  Why are you creating an MPIAIJ matrix in serial?
(Maybe you have MATMPIAIJ where it could be MATAIJ?)
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