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5 votes

How to find a computational bottleneck

Ideas: You could try two write timestamps at the beginning and the ends of your mpi communication instructions on each node. If the times to communicate the necessary data is linear, then your ...
MPIchael's user avatar
  • 2,985
1 vote

How to find a computational bottleneck

I want to add to what @MPIchael said, particularly on their third point about Ahmdal's Law. On one of my prior projects doing spacetime Galerkin stuff, we were doing scaling studies for our ...
spektr's user avatar
  • 4,258

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