Tutorial

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

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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

Host Range

For example, if the majority of workloads on the cluster use between 4 and 16 hosts, set these numbers as the lower and the upper bounds, through the -hr <n:m> option:

$ mpitune ... -hr 4:16

The mpitune utility scans all hosts in the rage between 4 and 16 whose numbers are powers of 2. For the example above, it creates tuned settings for 4, 8, and 16 hosts.

Parent topic: Task 1: Minimize Tuning Time in Cluster- Specific Mode
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