[petsc-users] PETSc and MPI-3/RMA

[Maeder Alexander]

I am a new user of PETSc

and want to know more about the underlying implementation for matrix-vector multiplication (Ax=y).

PETSc utilizes a 1D distribution and communicates only parts of the vector x utilized depending on the sparsity pattern of A.

Is the communication of x done with MPI-3 RMA and utilizes cuda-aware mpi for RMA?


Best regards,


Alexander Maeder
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