Persistent RMA Alltoallv reduces runtime by up to 44% for large messages by amortizing metadata costs, with fence-based designs showing the best gains on a real supercomputer.
Gropp, and Scott Lock- hart
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Analyzing Persistent Alltoallv RMA Implementations for High-Performance MPI Communication
Persistent RMA Alltoallv reduces runtime by up to 44% for large messages by amortizing metadata costs, with fence-based designs showing the best gains on a real supercomputer.