[Mpi-forum] SENDRECV + MPI_TYPE_CREATE_STRUCT

[Wesley Bland]

Diego,

This mailing list isn’t for questions about using MPI so you won’t get answers to your questions here. It’s for the group working on writing the MPI Standard. I would encourage you to post your question on the mailing list for whichever MPI implementation you are using:

MPICH: discuss at mpich.org <mailto:discuss at mpich.org>
Open MPI: users at open-mpi.org <mailto:users at open-mpi.org>

Others have their own support system available through their websites.

Thanks,
Wesley

> On Oct 2, 2014, at 10:20 AM, Diego Avesani <diego.avesani at gmail.com> wrote:
> 
> Dear all.
> I have some problem with MPI_TYPE_CREATE_STRUCT and as a consequence with SENDRECV.
> 
> I have this variable type
> 
> type particle
> integer :: ip
>  real :: RP(2)
>  real :: QQ(4)
> end type particle
> 
> When I compile in double precision with:
> 
> mpif90 -r8 -fpp -DPARALLEL *.f90 
> 
> So when I create my own variable type for MPI, I have
> 
> TYPES(1)=MPI_INTEGER                           !We have three variables type in the new varible
> TYPES(2)=MPI_DOUBLE_PRECISION       !Integer and Real and Real
>  TYPES(3)=MPI_DOUBLE_PRECISION       !Integer and Real and Real
>  nBLOCKS(1)=1                                              !number of element in each block 
>  nBLOCKS(2)=2
>   nBLOCKS(3)=4
>   !
>   DISPLACEMENTS(1)=0
>   DISPLACEMENTS(2)=sizeof(dummy%ip)
>   DISPLACEMENTS(3)=sizeof(dummy%ip)+sizeof(dummy%RP(1))+sizeof(dummy%RP(2))
>    !  
>   CALL MPI_TYPE_CREATE_STRUCT(3,nBLOCKS,DISPLACEMENTS,TYPES,MPI_PARTICLE_TYPE, PI%ierr)
>    CALL MPI_TYPE_COMMIT(MPI_PARTICLE_TYPE,MPI%ierr)
> 
> 
> Am I right?
> Thanks, in advance, for any kind of help
> 
> 
> Diego
> 
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