Provided by: librheolef-dev_6.7-6_amd64 bug


       environment - rheolef initialization (rheolef-6.7)


       This  class  is mainly used to initialize the MPI library: it should be called juste after
       the main(argc,argv) declaration as in:

           #include "rheolef.h"
           using namespace rheolef;
           int main(int argc, char**argv) {
             environment rheolef (argc, argv);

       An optional third argument of the environment constructor allows to  set  the  MPI  thread
       feature.  By default, its value is MPI_THREAD_SINGLE, as defined in mpi.h.  Other possible
       values are related to MPI multi-threaded, see the MPI documentation for more details.