CODEWITHSUNDEEP
c++mpihdf5
SamVanDonut
SamVanDonut

Reputation: 369

MPI-Parallel HDF5: H5Pset_fapl_mpio equivalent in C++

I want to use parallel HDF5 on a distributed memory cluster for the output of my MPI application. I'm familiar with the C-interface, but wanted to try the C++ API as well.

However, I got stuck when trying to "convert" this command H5Pset_fapl_mpio( p_list, MPI_COMM_WORLD, MPI_INFO_NULL ); into C++. I was not able to find the corresponding call in the API.

How is the MPI communicator properly handed to HDF5 via the C++ interface?

Upvotes: 1

Views: 1225

Answers (2)

SOG
SOG

Reputation: 912

You may want to have a look at HDFql which fully supports parallel HDF5 (i.e. HDF5+MPI). It will also alleviate you from low-level details such as setting certain parameters through H5Pset_fapl_mpio (HDFql will do it for you).

You can find an example that illustrates how to use HDFql in parallel (i.e. MPI) in C++ here.

Upvotes: 0

Matthieu Brucher
Matthieu Brucher

Reputation: 22023

There is no equivalent at this stage, as some of the MPI calls are not yet ported to the C++ API (according to recent discussions like this one). You have to remember that until very recently, there was no support of MPI in the C++ layer.

You may also want to have a look at htpp://h5cpp.ca as it may support also your use case.

Upvotes: 1

Related Questions