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_TRACE_PROFILE

Specify the default profile for the
-trace
option.
Syntax
I_MPI_TRACE_PROFILE=
<profile-name>
Argument
<
profile-name
>
Specify a tracing profile name. The default value is
vt.
Description
Set this environment variable to select a specific MPI profiling library to be used with the
-trace
 option of
mpiicc
or another Intel MPI Library compiler wrapper.
The
I_MPI_{CC,CXX,F77,F90}_PROFILE
environment variable overrides
I_MPI_TRACE_PROFILE
.

I_MPI_CHECK_PROFILE

Specify the default profile for the
-check_mpi
option.
Syntax
I_MPI_CHECK_PROFILE=
<profile-name>
Argument
<profile-name>
Specify the checking profile name. The default value is
vtmc.
Description
Set this environment variable to select a specific MPI checking library to be used with the
-check_mpi
option to
mpiicc
or another Intel MPI Library compiler wrapper.
The
I_MPI_{CC,CXX,F77,F90}_PROFILE
environment variable overrides
I_MPI_CHECK_PROFILE
.

I_MPI_CHECK_COMPILER

Turn on/off compiler compatibility check.
Syntax
I_MPI_CHECK_COMPILER=
<arg>
Arguments
<arg>
Binary indicator.
enable | yes | on | 1
Enable checking the compiler.
disable | no | off | 0
Disable checking the compiler. This is the default value.
Description
If
I_MPI_CHECK_COMPILER
is set to
enable
, the Intel MPI Library compiler wrapper checks the underlying compiler for compatibility. Normal compilation requires using a known version of the underlying compiler.

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.
The configuration file is sourced if it exists for a specified compiler. See -configfor details.

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
(with the global lock)
. This is the default value
dbg
Multi-threaded debug library
(with the global lock)
opt_mt
Multi-threaded optimized library (with per-object lock for the thread-split model)
dbg_mt
Multi-threaded debug library (with per-object lock for the thread-split model)
Description
Set this variable to always link against the specified version of the Intel MPI Library.

I_MPI_DEBUG_INFO_STRIP-

Turn on/off the debug information stripping while linking applications statically.
Syntax
I_MPI_DEBUG_INFO_STRIP=
<arg>
Arguments
<arg>
Binary indicator
enable | yes | on | 1
Turn on. This is the default value
disable | no | off | 0
Turn off
Description
Use this option to turn on/off the debug information stripping while linking the Intel MPI Library statically. Debug information is stripped by default.

I_MPI_{C,CXX,FC,F}FLAGS

Set special flags needed for compilation.
Syntax
I_MPI_CFLAGS=
<flags>
I_MPI_CXXFLAGS=
<flags>
I_MPI_FCFLAGS=
<flags>
I_MPI_FFLAGS=
<flags>
Arguments
<flags>
Flag list
Description
Use this environment variable to specify special compilation flags.

I_MPI_LDFLAGS

Set special flags needed for linking.
Syntax
I_MPI_LDFLAGS=
<flags>
Arguments
<flags>
Flag list
Description
Use this environment variable to specify special linking flags.

I_MPI_FORT_BIND

Disable
mpiicc
linking with Fortran bindings.
Syntax
I_MPI_FORT_BIND=
<arg>
Arguments
<arg>
Binary indicator
enable | yes | on | 1
Enable linking. This is the default value
disable | no | off | 0
Disable linking
Description
By default, the
mpiicc
also links against the Fortran bindings even if Fortran is not used. Use this environment variable to change this default behavior. Has the same effect as the option.

Product and Performance Information

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