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One sided communication is certainly one route. Another mechanism you could use to tackle this is use non-blocking two-sided communication, things like MPI_ISend and MPI_IRecv. If you fix some MPI process, you could set it up to have two main tasks: Process requests from other processes asking for array data local to this process When this process gets a ...


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The basic model of MPI is "two-sided communication": you have a sender who knows where to send, and a receiver who knows from where to expect something. In your description that is not the case: the sender sends to a randomly generated receiver. You could do this with one-sided communication in MPI which will be a bit of a learning curve. There the ...


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Ed Bueler just wrote the perfect book for you: "PETSc for Partial Differential Equations: Numerical Solutions in C and Python" https://epubs.siam.org/isbn/978-1-61197-630-4


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