Describing Your Platform
------------------------
-As a SMPI user, you are supposed to provide a description of your
+As an SMPI user, you are supposed to provide a description of your
simulated platform, that is mostly a set of simulated hosts and network
links with some performance characteristics. SimGrid provides a plenty
of :ref:`documentation <platform>` and examples (in the
---------
It is time to start using SMPI yourself. For that, you first need to
-install it somehow, and then you will need a MPI application to play with.
+install it somehow, and then you will need an MPI application to play with.
Using Docker
............
simulation accuracy. Furthermore there should not be any MPI calls
inside such parts of the code.
-Use for this part the `gemm_mpi.c
+Use for this part the `gemm_mpi.cpp
<https://gitlab.com/PRACE-4IP/CodeVault/raw/master/hpc_kernel_samples/dense_linear_algebra/gemm/mpi/src/gemm_mpi.cpp>`_
example, which is provided by the `PRACE Codevault repository
<http://www.prace-ri.eu/prace-codevault/>`_.
The computing part of this example is the matrix multiplication routine
.. literalinclude:: /tuto_smpi/gemm_mpi.cpp
- :language: c
+ :language: cpp
:lines: 4-19
.. code-block:: shell
- $ smpicc -O3 gemm_mpi.cpp -o gemm
+ $ smpicxx -O3 gemm_mpi.cpp -o gemm
$ time smpirun -np 16 -platform cluster_crossbar.xml -hostfile cluster_hostfile --cfg=smpi/display-timing:yes --cfg=smpi/running-power:1000000000 ./gemm
This should end quite quickly, as the size of each matrix is only 1000x1000.