MPI

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  • MPI from Zero: Ranks, Messages and a 1-D Heat Equation with Halo Exchange

    What an MPI program is, how point-to-point and collective communication differ, the deadlock everyone writes once, and a complete heat-equation solver with ghost cells and non-blocking overlap, compiled and checked against Open MPI on a single laptop.

    15 min read 2,899 words Category: HPC Tags: mpi, distributed memory, c