H5Part development and discussion

[Matthew Bettencourt <mbetten AT sandia.gov>]

It is the second case.  It might work depending on your mpi.


The problem is if my main program says

include <mpi.h>

include <H5hut.h>

you will have issues w/


MPI_Comm being redefined from  a struct to an int.

Swapping the order of the includes also causes a problem.


On 07/25/2017 10:37 AM, PSI wrote:
> > On 24 Jul 2017, at 19:45, Matthew Bettencourt <mbetten AT sandia.gov> wrote:
> >
> > I really like H5Hut and I'm using the latest git verison.
> >
> >
> > Question, it looks like the parallel_io define is really has_mpi which is 
> > necessary for parallel_io but not sufficient.  If you are building with MPI 
> > but not a parallel hdf5, then you get errors at link time if you enable 
> > parallel_io or at compile time if you use mpicc.
> I'm not sure whether I understand you correctly. Is this what you mean?
>
> First case: building H5hut with MPI, a serial (not parallel) hdf5, 
> PARALLEL_IO defined.
> This combination is not valid. I will add some checks in configure and 
> H5huts's header files to print an error.
>
> Second case: building H5hut with MPI, a serial hdf5, PARALLEL_IO not defined.
> This should work, I have to test this case.
>
>
> Best
>
> Achim