Biblioteca MPI Intel®

Other Problems

Other Problems

Example 1

Symptom/Error Message

cannot execute binary file

Cause

Wrong binary executable file format or architecture.

Gathering Statistics

Gathering Statistics

If you want to collect statistics on MPI functions used in your application, you can set the I_MPI_STATS environment variable to a number, between 1 to 10. This environment variable controls the amount of statistics information collected and the output to the log file. By default, no statistics are gathered.

Global Options

Global Options

-hostfile <hostfile> or -f <hostfile>

Use this option to specify host names on which to run the application. If a host name is repeated, this name is used only once.

Tuning Reference

The Intel® MPI Library provides an automatic tuning utility and many environment variables that can be used to influence program behavior and performance at run time.

Collective Operation Control

Collective Operation Control

Each collective operation in the Intel® MPI Library supports a number of communication algorithms. In addition to highly optimized default settings, the library provides a way to control the algorithm selection explicitly: I_MPI_ADJUST environment variable family, which is described in the following section.

Graphical Utilities

The Intel® MPI Library provides three graphical utilities: wmpiregister, wmpiexec, and wmpiconfig. These utilities simplify using the Intel® MPI Library under Windows* OS.

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