I'm writing an application which requires sending some variable size of sub matrices to a set of processes by a lead process who holds the original matrix. Here, the matrices are square matrices and the receiving process doesn't know the size of the receiving matrix. In MPI_Bcast, I have seen that we can broadcast a whole matrix. Is there a similar way to do this with a derived data type for the matrices which we can send a matrix without looping the blocks ?.

Thanks,

Prasad.

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