Intel® MPI Library Developer Reference for Linux* OS

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ID 768732
Date 3/22/2024
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Document Table of Contents
Document Table of Contents x
Intel® MPI Library Developer Reference for Linux* OS
Intel® MPI Library Developer Reference for Linux* OS x
Command Reference Environment Variable Reference Global Options and Environment Variables for mpiexec.hydra mpitune_fast Package Layout Documentation for Older Versions Developer Reference Sections Introduction Command Reference Environment Variable Reference Miscellaneous Notices and Disclaimers
Introduction x
Introducing Intel® MPI Library Notational Conventions Related Information
Command Reference x
Compiler Commands mpirun mpiexec.hydra cpuinfo impi_info mpitune_fast
Compiler Commands x
Compilation Command Options
mpiexec.hydra x
Global Hydra Options Local Hydra Options gtool Options
Environment Variable Reference x
Compilation Environment Variables Hydra Environment Variables I_MPI_ADJUST Family Environment Variables Tuning Environment Variables Process Pinning GPU Support NIC Pinning Environment Variables for Fabrics Control Environment Variables for Memory Policy Control Environment Variables for Asynchronous Progress Control Environment Variables for Multi-EP Other Environment Variables
Tuning Environment Variables x
Autotuning
Autotuning x
I_MPI_TUNING_AUTO Family Environment Variables
Process Pinning x
Environment Variables for Process Pinning Interoperability with OpenMP* API
GPU Support x
GPU Pinning GPU Buffers Support
Environment Variables for Fabrics Control x
Communication Fabrics Control Shared Memory Control OFI*-capable Network Fabrics Control
Miscellaneous x
Java* Bindings for MPI-2 Routines
Intel® MPI Library Developer Reference for Linux* OS

Intel® MPI Library Developer Reference for Linux* OS

This Developer Reference provides you with the complete reference for the Intel MPI Library. It is intended to help a user fully utilize the Intel MPI Library functionality.

For examples and detailed functionality descriptions, refer to the Intel® MPI Library Developer Guide for Linux* OS.

Refer to Intel® MPI Release Notes for new features and known limitations.

The following are some popular topics in the Intel MPI Library Developer Reference:

Command Reference

Command Reference provides reference information on compilation and runtime commands (mpirun, cpuinfo, impi_info) and describes how to use these commands.

Environment Variable Reference

Environment Variable Reference provides syntax, arguments, and descriptions for Fabrics Control, Tuning, Autotuning, Process Pinning, and I_MPI_ADJUST Family environment variables.

Global Options and Environment Variables for mpiexec.hydra

Describes the Global Options and provides Environment Variables used with the Hydra process manager.

mpitune_fast

mpitune_fast tunes the Intel MPI Library to the cluster configuration using the Autotuning functionality.

Package Layout

You can find MPI benchmark sources, compiler configs, and MPI binding at<I_MPI_install_dir>/opt/mpi .

Documentation for Older Versions

Documentation for some older versions of the Intel® MPI Library is available as downloads only.

To download specific versions of prior Intel MPI Library documentation, refer to one of the following locations:

Developer Reference Sections

Level Two Title