[petsc-dev] MatPinToCPU

Mark Adams mfadams at lbl.gov
Tue Jul 23 09:12:54 CDT 2019

I've tried to add pining the matrix and prolongator to the CPU on coarse
grids in GAMG with this:

    /* pin reduced coase grid - could do something smarter */
    ierr = MatPinToCPU(*a_Amat_crs,PETSC_TRUE);CHKERRQ(ierr);
    ierr = MatPinToCPU(*a_P_inout,PETSC_TRUE);CHKERRQ(ierr);

It does not seem to work. It does not look like CUDA has an MatCreateVecs.
Should I add one and copy this flag over?

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