Intel® MPI Library

Host Range

For example, if the majority of workloads on the cluster use between 4 and 16 hosts, set these numbers as the lower and the upper bounds, through the -hr <n:m> option:

$ mpitune ... -hr 4:16

Host Range

For example, if the majority of workloads on the cluster use between 4 and 16 hosts, set these numbers as the lower and the upper bounds, through the -hr <n:m> option:

> mpitune ... -hr 4:16

Message Sizes

Most Common MPI Functions

If you have statistics on usage and performance of MPI functions, you can adjust the tuning scope according to your needs. You can find the correspondence of various tuning options with MPI functions in Intel® MPI Library Developer Guide before you start.

You can look at the most widely used MPI routines and go from simple to more complex functions. For example, you can perform point-to-point tuning before tuning collective operations.

Message Sizes

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