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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
impi_info
Provides information on available Intel® MPI Library environment variables.
Syntax
impi_info <options>
Arguments
| <options> | List of options. |
| -a | -all | Show all IMPI variables. |
| -h | -help | Show a help message. |
| -v | -variable | Show all available variables or description of the specified variable. |
| -c | -category | Show all available categories or variables of the specified category. |
| -e | -expert | Show all expert variables. |
Description
The impi_info utility provides information on environment variables available in the Intel MPI Library. For each variable, it prints out the name, the default value, and the value data type. By default, a reduced list of variables is displayed. Use the -all option to display all available variables with their descriptions.
The example of the impi_info output:
$ ./impi_info
| NAME | DEFAULT VALUE | DATA TYPE | ======================================================================== | I_MPI_THREAD_SPLIT | 0 | MPI_INT | | I_MPI_THREAD_RUNTIME | none | MPI_CHAR | | I_MPI_THREAD_MAX | -1 | MPI_INT | | I_MPI_THREAD_ID_KEY | thread_id | MPI_CHAR |
Parent topic: Command Reference