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</o:shapelayout></xml><![endif]--></head><body lang=EN-US link=blue vlink=purple><div class=WordSection1><p class=MsoNormal>Petsc-users,<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>I want to use PARDISO for a KSPPREONLY solution in a parallel context. I understand that my FEA stiffness matrix for KSP (PARDISO) needs to be of type MATSEQAIJ (according to MATSOLVERMKL_PARDISO), but I would like to assemble this matrix in parallel (MATSBAIJ) and then collect it on root as a sequential matrix for calling KSP/PARDISO. For vectors there is VecScatterCreateToZero() but I can't find the equivalent for matrices. I can avoid the parallel matrix stiffness altogether and use 3 vectors instead, but I'm wondering if that is my best option.<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>What is the recommended practice for using PARDISO in a parallel context? The only examples I've found so far are sequential.<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>Thanks in advance,<o:p></o:p></p><p class=MsoNormal>Matt Overholt<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p></div><br />
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