Bibliothèque Intel® MPI Library

Enabling Connectionless DAPL UD in the Intel® MPI Library

What is DAPL UD?

Traditional InfiniBand* support involves MPI message transfer over the Reliable Connection (RC) protocol. While RC is long-standing and rich in functionality, it does have certain drawbacks: since it requires that each pair of processes setup a one-to-one connection at the start of the execution, memory consumption could (at the worst case) grow linearly as more MPI ranks are added and the number of pair connections grows.

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  • Controlling Process Placement with the Intel® MPI Library

    When running an MPI program, process placement is critical to maximum performance.  Many applications can be sufficiently controlled with a simple process placement scheme, while some will require a more complex approach.  The Intel® MPI Library offers multiple options for controlling process placement within the Hydra process manager.

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