BI_TransUserComm()

MPI_Comm BI_TransUserComm	(	Int	Ucomm,
		Int	Np,
		Int *	pmap
	)

Definition at line 3 of file BI_TransUserComm.c.

{
   MPI_Comm bcomm, ucomm;
   MPI_Group bgrp, ugrp;
   Int i;
 
   MpiInt *mpmap = (MpiInt *)malloc(Np * sizeof(MpiInt));
   for (i=0; i<Np; i++) mpmap[i] = pmap[i];
 
   ucomm = MPI_Comm_f2c(Ucomm);
   i=MPI_Comm_group(ucomm, &ugrp);
   i=MPI_Group_incl(ugrp, Np, mpmap, &bgrp);
   i=MPI_Comm_create(ucomm, bgrp, &bcomm);
   i=MPI_Group_free(&ugrp);
   i=MPI_Group_free(&bgrp);
 
   free(mpmap);
 
   return(bcomm);
}

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