mpifort - Compiles and links MPI programs written in Fortran 90
This command can be used to compile and link MPI programs written in Fortran. It
provides the options and any special libraries that are needed to compile and
link MPI programs.
It is important to use this command, particularly when linking programs, as it
provides the necessary libraries.
- - Show the commands that would be used without running them
- - Give short help
- - Use compiler name instead of the default choice. Use this only if
the compiler is compatible with the MPICH library (see below)
- - Load a configuration file for a particular compiler. This allows a
single mpifort command to be used with multiple compilers.
- - Show the steps for compiling a program. This option can be used to see
what options and include paths are used by mpifort.
- - Show the steps for linking a program. This option can be used to see
what options and libraries are used by mpifort.
- - Use the MPI profiling given by name. See below for details
- - Show exactly what this program is doing. This option should normally not
- - are passed to the compiler or linker. For example, -c causes
files to be compiled, -g selects compilation with debugging on most
systems, and -o name causes linking with the output executable
given the name name .
The environment variables MPICH_FC
may be used to select different
Fortran compiler and linker. Note that since MPICH is built with a particular
C and Fortran compiler, change the compilers used can cause problems. Use this
only if you could intermix code compiled with the different compilers.
The MPI library may be used with any compiler that uses the same lengths for
basic data objects (such as long double
) and that uses compatible
run-time libraries. On many systems, the various compilers are compatible and
may be used interchangably. There are exceptions; if you use the
environment variable or the -fc=name
argument to override the choice of compiler and encounter problems, try
reconfiguring MPICH with the new compiler and installing MPICH in a separate
location. See the installation manual for more details.
To compile a single file foo.f
mpifort -c foo.f
To link the output and make an executable, use
mpifort -o foo foo.o
Combining compilation and linking in a single command
mpifort -o foo foo.f
is a convenient way to build simple programs.
argument allows you to specify an MPI profiling library
to be used. name
can have two forms:
A library in the same directory as the MPI library
The name of a profile configuration file
is a library, then this library is included before the MPI
library. This allows the simple use of libraries that make use of the MPI
profiling interface and that are installed in the same directory as the MPI
is the name of a file in the sysconfdir directory, then this
is read and may define the following variables:
- - Libraries (and paths) to include before the MPI library
- - Libraries to include after the MPI library
- - C preprocessor arguments for any include files For example, to add
/usr/local/myprof/include to the include path and the library
libmyprof.a in /usr/local/myprof/lib to the link step, you
could create the file myprof.conf with the lines
and place it in the sysconfdir directory (this directory is set at configure
time when MPICH is built). Then using the command-line argument
-profile=myprof will cause these definitions to be added to the
relevant compile commands.
mpicc, mpicxx, mpifort, mpiexec