Intel® MPI Library

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Tuning with mpitune Utility

Besides the standard capabilities for compiling and running MPI applications, Intel® MPI Library provides an automatic utility for optimizing Intel MPI Library parameters for a particular cluster or application. This utility is called mpitune and is available in the <installdir>/intel64/bin directory.

Controlling Process Placement

Placement of MPI processes over the cluster nodes plays a significant role in application performance. Intel® MPI Library provides several options to control process placement.

By default, when you run an MPI program, the process manager launches all MPI processes specified with -n on the current node. If you use a job scheduler, processes are assigned according to the information received from the scheduler.

Introducing Intel® MPI Library

Intel® MPI Library is a multi-fabric message passing library that implements the Message Passing Interface, v3.1 (MPI-3.1) specification. It provides a standard library across Intel® platforms that enable adoption of MPI-3.1 functions as their needs dictate.

Intel® MPI Library enables developers to change or to upgrade processors and interconnects as new technology becomes available without changes to the software or to the operating environment.

Introduction

This Developer Reference provides you with the complete reference for the Intel® MPI Library. It is intended to help an experienced user fully utilize the Intel MPI Library functionality. You can freely redistribute this document in any desired form.

Document Organization

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