Tutorial

Using MPI Tuner for Intel® MPI Library on Linux* OS

Download PDF
ID 768652
Date 2/19/2016
Public
Document Table of Contents
Document Table of Contents x
Tutorial: Using MPI Tuner for Intel® MPI Library
Tutorial: Using MPI Tuner for Intel® MPI Library x
Legal Information Overview Getting Started Task 1: Minimize Tuning Time in Cluster- Specific Mode Task 2: Include Missing Values in the Default Parameters Grid during Cluster Tuning Task 3: Application-Specific Tuning Troubleshooting
Getting Started x
Accessing MPI Tuner MPI Tuner Modes
MPI Tuner Modes x
Cluster-Specific Tuning Commands Application-Specific Tuning Commands
Task 1: Minimize Tuning Time in Cluster- Specific Mode x
Host Range Numbers of Ranks per Host Fabric Usage (I_MPI_FABRICS) Message Sizes Most Common MPI Functions
Task 3: Application-Specific Tuning x
Commands for Fast Application-Specific Tuning Commands for Topology Awareness Rank Placement Optimization
Tutorial: Using MPI Tuner for Intel® MPI Library

Cluster-Specific Tuning Commands

To use the MPI tuner in the cluster-specific mode:

  1. Run the following command to create the tuned configuration files in the default <installdir>/<arch>/<etc> directory:

    $ mpitune -hf <hostfile>

    To create configuration files in a different directory, use the -odr option:

    $ mpitune -hf <hostfile> -odr <path_to_result_directory>

  2. Use the -tune option without an argument to pick up the configuration files from the default directory, or use the path to the results as an argument for -tune. For example:

    $ mpirun -tune -ppn 8 -n 128 ./my_app
$ mpirun -tune <path_to_result_directory> -ppn 8 -n 128 ./my_app
Parent topic: MPI Tuner Modes
Level Two Title