dune-common 2.1.1
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Helpers for dealing with MPI. More...
Go to the source code of this file.
Classes | |
class | Dune::FakeMPIHelper |
A fake mpi helper. More... | |
class | Dune::MPIHelper |
A real mpi helper.This helper should be used for parallel programs. More... | |
Namespaces | |
namespace | Dune |
Dune namespace. |
Helpers for dealing with MPI.
Basically there are two helpers available:
Example of who to use these classes:
A program that is parallel if compiled with MPI and sequential otherwise:
int main(int argc, char** argv){ typedef Dune::MPIHelper MPIHelper; MPIHelper::instance(argc, argv); typename MPIHelper::MPICommunicator world = MPIHelper::getCommunicator(); ...
If one wants to have sequential program even if the code is compiled with mpi then one simply has to exchange the typedef with
typedef Dune::MPIHelper FakeMPIHelper;
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For checking whether we really use MPI or just fake please use MPIHelper::isFake (this is also possible at compile time!)