Intel® MPI Library

Developer Reference for Linux* OS

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ID 768732
Date 6/30/2025
Public
Document Table of Contents
Document Table of Contents x
Developer Reference for Linux* OS
Developer Reference for Linux* OS x
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
Hydra Environment Variables x
Environment Variables Not Propagated by Hydra
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
Developer Reference for Linux* OS

Command Reference

This section provides information on different command types and how to use these commands:

  • Compilation Commands lists the available Intel® MPI Library compiler commands, related options, and environment variables.

  • mpirun provides the description and examples for the mpirun command.

  • mpiexec.hydra gives full information on the mpiexec.hydra command, its options, environment variables, and related features and utilities.

  • cpuinfo provides the syntax, arguments, description and output examples for the cpuinfo utility.

  • impi_info provides information on available environment variables.

  • mpitune_fast provides information on configuration options for the mpitune_fast utility.

Parent topic: Intel® MPI Library Developer Reference for Linux* OS
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