Developer Reference

Compilation Environment Variables

I_MPI_{CC,CXX,FC,F77,F90}_PROFILE

Specify the default profiling library.
Syntax
I_MPI_CC_PROFILE=
<profile-name>
I_MPI_CXX_PROFILE=
<profile-name>
I_MPI_FC_PROFILE=
<profile-name>
I_MPI_F77_PROFILE=
<profile-name>
I_MPI_F90_PROFILE=
<profile-name>
Argument
<
profile-name
>
Specify a default profiling library.
Description
Set this environment variable to select a specific MPI profiling library to be used by default. This has the same effect as using
-profile=
<profile-name>
as an argument for
mpiicc
or another Intel® MPI Library compiler wrapper.

I_MPI_{CC,CXX,FC,F77,F90}

Set the path/name of the underlying compiler to be used.
Syntax
I_MPI_CC=
<compiler>
I_MPI_CXX=
<compiler>
I_MPI_FC=
<compiler>
I_MPI_F77=
<compiler>
I_MPI_F90=
<compiler>
Arguments
<compiler>
Specify the full path/name of compiler to be used.
Description
Set this environment variable to select a specific compiler to be used. Specify the full path to the compiler if it is not located in the search path.
Some compilers may require additional command line options.

I_MPI_ROOT

Set the Intel MPI Library installation directory path.
Syntax
I_MPI_ROOT=
<path>
Arguments
<path>
Specify the installation directory of the Intel MPI Library.
Description
Set this environment variable to specify the installation directory of the Intel MPI Library.
If you are using the Visual Studio integration, you may need to use
I_MPI_ONEAPI_ROOT
.

VT_ROOT

Set Intel® Trace Collector installation directory path.
Syntax
VT_ROOT=
<path>
Arguments
<path>
Specify the installation directory of the Intel Trace Collector.
Description
Set this environment variable to specify the installation directory of the Intel Trace Collector.

I_MPI_COMPILER_CONFIG_DIR

Set the location of the compiler configuration files.
Syntax
I_MPI_COMPILER_CONFIG_DIR=
<path>
Arguments
<path>
Specify the location of the compiler configuration files. The default value is
<install-dir>
\
etc
Description
Set this environment variable to change the default location of the compiler configuration files.

I_MPI_LINK

Select a specific version of the Intel MPI Library for linking.
Syntax
I_MPI_LINK=<
arg
>
Arguments
Argument
Library Version
opt
Multi-threaded optimized library. This is the default value
dbg
Multi-threaded debug library
Description
Set this variable to always link against the specified version of the Intel MPI Library.

Product and Performance Information

1

Performance varies by use, configuration and other factors. Learn more at www.Intel.com/PerformanceIndex.