Intel® MPI Library Developer Guide for Windows* OS

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ID 768730
Date 10/31/2024
Public
Document Table of Contents
Document Table of Contents x
Intel® MPI Library Developer Guide for Windows* OS
Intel® MPI Library Developer Guide for Windows* OS x
Introduction Installation and Prerequisites Compiling and Linking Running Applications Debugging Applications Analysis and Tuning Troubleshooting Notices and Disclaimers
Introduction x
Introducing Intel® MPI Library Conventions and Symbols Related Information
Installation and Prerequisites x
Installation Prerequisite Steps User Authorization
Compiling and Linking x
Compiling an MPI Program Configuring a Microsoft Visual Studio* Project
Running Applications x
Running Intel® MPI Library in Containers Selecting a Library Configuration Running an MPI Program Running an MPI/OpenMP* Program MPMD Launch Mode Fabrics Control Job Schedulers Support Controlling Process Placement Java* MPI Applications Support
Running Intel® MPI Library in Containers x
Build a Singularity* Container for an MPI Application Run the Application with a Container
Fabrics Control x
Selecting Fabrics Libfabric* Support OFI* Providers Support tcp netdir
Debugging Applications x
Debugging Using -gtool for Debugging
Analysis and Tuning x
Displaying MPI Debug Information Tracing Applications MPI Tuning
Troubleshooting x
Error Message: Bad Termination Error Message: No such file or Directory Error Message: Permission Denied Error Message: Fatal Error Error Message: Bad File Descriptor Error Message: Too Many Open Files Problem: MPI Application Hangs Problem: Password Required Problem: Cannot Execute Binary File Problem: MPI limitation for Docker*
Intel® MPI Library Developer Guide for Windows* OS

OFI* Providers Support

Intel® MPI Library supports tcp, netdir, psm2. Each OFI provider is built as a separate dynamic library to ensure that a single libfabric* library can be run on top of different network adapters.

NOTE:
Use the environment variable FI_PROVIDER to select a provider. Set the FI_PROVIDER_PATH environment variable to specify the path to provider libraries.

To get a full list of environment variables available for configuring OFI, run the following command: 

> fi_info  -e

tcp

The TCP provider is a general purpose provider for the Intel MPI Library that can be used on any system that supports TCP sockets to implement the libfabric API. The provider lets you run the Intel MPI Library application over regular Ethernet, in a cloud environment that has no specific fast interconnect (e.g., GCP, Ethernet empowered Azure*, and AWS* instances) or using IPoIB.

The following runtime parameters can be used:

Name Description
FI_TCP_IFACE Specifies a particular network interface.
FI_TCP_PORT_LOW_RANGE

FI_TCP_PORT_HIGH_RANGE

 Sets the range of ports to be used by the TCP provider for its passive endpoint creation. This is useful when only a range of ports are allowed by the firewall for TCP connections.

netdir

The NETDIR provider runs over NetworkDirect* interface for the compatible hardware. The following runtime parameters can be used:

Name Description
FI_NETDIR_MR_CACHE Enables memory registration cache (default: 0)
FI_NETDIR_MR_CACHE_MAX_SIZE Sets the maximum memory registration cache size (default: mem/core_count/2)
Parent topic: Fabrics Control
Level Two Title