[petsc-users] PETSc MPI world question

[Y. Joseph Zhang]

Hi:

We've been using PETSc solvers in our code for many years. A few years ago we changed the I/O method to improve efficiency, by reserving dedicated 'scribe' MPI processes. This entails the partitioning of MPI_COMM_WORLD into 2 worlds (1 for compute and the other for I/O).

Is there a way to ask PETSc to use compute world only? Otherwise we'd get a lot of errors.

Thank you for the great tool for the community!




-Joseph



Joseph Zhang

Office: (804) 684 7464

Web: schism.wiki


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