Building an MPI library : Différence entre versions
De LMDZPedia
| Ligne 1 : | Ligne 1 : | ||
| − | There are a few freely available MPI libraries around; among the most widely spread are the OpenMPI and MPICH libraries | + | There are a few freely available MPI libraries around; among the most widely spread are the OpenMPI https://www.open-mpi.org/ and MPICH https://www.mpich.org/ libraries |
== Checking if you have an Fortran enabled MPI library already installed and at hand == | == Checking if you have an Fortran enabled MPI library already installed and at hand == | ||
| Ligne 32 : | Ligne 32 : | ||
$PATH_OPENMPI/openmpi-1.10.3/bin/mpif90 -V | $PATH_OPENMPI/openmpi-1.10.3/bin/mpif90 -V | ||
</syntaxhighlight> | </syntaxhighlight> | ||
| − | returns something meaningful | + | returns something meaningful like |
| + | <syntaxhighlight lang="bash"> | ||
| + | GNU Fortran (Ubuntu 9.4.0-1ubuntu1~20.04.1) 9.4.0 | ||
| + | Copyright (C) 2019 Free Software Foundation, Inc. | ||
| + | This is free software; see the source for copying conditions. There is NO | ||
| + | warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. | ||
| + | </syntaxhighlight> | ||
| − | == | + | == A few things worth knowing about == |
* '''mpif90''' is just a wrapper around a given compiler which could be gfortran, ifort, pgfortran, etc. to know more about that run | * '''mpif90''' is just a wrapper around a given compiler which could be gfortran, ifort, pgfortran, etc. to know more about that run | ||
<syntaxhighlight lang="bash"> | <syntaxhighlight lang="bash"> | ||
| Ligne 42 : | Ligne 48 : | ||
* It is vital to use the '''mpirun''' command from the same package than the '''mpif90''' compilation wrapper use to compile. Otherwise one can get some really weird results... | * It is vital to use the '''mpirun''' command from the same package than the '''mpif90''' compilation wrapper use to compile. Otherwise one can get some really weird results... | ||
| − | + | 05/01/2022 | |
[[Category:HowTo]] | [[Category:HowTo]] | ||
[[Category:WhatIs]] | [[Category:WhatIs]] | ||
Version du 5 janvier 2023 à 17:35
There are a few freely available MPI libraries around; among the most widely spread are the OpenMPI https://www.open-mpi.org/ and MPICH https://www.mpich.org/ libraries
Sommaire
Checking if you have an Fortran enabled MPI library already installed and at hand
This can easily be done by checking if the MPI wrapper mpif90 is available, i.e. that
which mpif90
returns something meaningful
using a package manager
If you have sudo privileges and are on an Ubuntu or Linux Mint machine you should be able to install the OpenMPI library with
sudo apt install libopenmpi-dev openmpi-bin
Example of personal installation of the the OpenMPI library
To adapt to fit your onw needs and system specificities, obviously. In the example below the installation is done in the $HOME/LMDZ directory (for convenience this path is stored in the PATH_OPENMPI variable.
PATH_OPENMPI=$HOME/LMDZ/
mkdir -p $PATH_OPENMPI
cd $PATH_OPENMPI
wget https://www.open-mpi.org/software/ompi/v1.10/downloads/openmpi-1.10.3.tar.gz
gunzip openmpi-1.10.3.tar.gz
tar xvf openmpi-1.10.3.tar
cd openmpi-1.10.3
./configure --prefix $PATH_OPENMPI/openmpi-1.10.3
make all install
To check that the install went well check that
$PATH_OPENMPI/openmpi-1.10.3/bin/mpif90 -V
returns something meaningful like
GNU Fortran (Ubuntu 9.4.0-1ubuntu1~20.04.1) 9.4.0
Copyright (C) 2019 Free Software Foundation, Inc.
This is free software; see the source for copying conditions. There is NO
warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
A few things worth knowing about
- mpif90 is just a wrapper around a given compiler which could be gfortran, ifort, pgfortran, etc. to know more about that run
mpif90 --version
- in some cases (e.g. with ifort) the Fortran wrapper is called mpiifort , not mpif90
- It is vital to use the mpirun command from the same package than the mpif90 compilation wrapper use to compile. Otherwise one can get some really weird results...
05/01/2022
