On Thu, Sep 8, 2016 at 10:17 AM, Clément <clement.fo...@gmail.com> wrote:
> Hi every one, > > I'm currently working on a monitoring component for OpenMPI. After > browsing the MPI standard, in order to know what the MPI_Tools interface > looks like, and how it's working, I had a look at the code I recieved and > something surprised me. I can't find anywhere any reference to the sessions > (MPI_T_pvar_session). > This being an MPI level type it should be defined in the mpi.h. However, as our MPI header file is auto-generated, you have to look in the mpi.h.in instead. Here is the definition: ./ompi/include/mpi.h.in:344:typedef struct mca_base_pvar_session_t *MPI_T_pvar_session; > > How is it dealt with in the ompi engine? Are the call-back functions > simply called when necessary, trusting the calling layers for that, or > should it be managed manually? How to get the reference to the object on > which the pvar is linked? And to the session (for a per-session monitoring > for example, in parallel with a global monitopring)? If one object is > monitored in two sessions, both actives at the same time, are the call-back > functions called twice? > > Probably, it should be possible to answer to most of this questions in one > simple one : is there a programmation reference for the MPI_Tools > implementation somewhere? If so, where would it be? > Everything you ever wanted to know about our PVAR implementation is in opal/mca/base/mca_base_pvar. George. > > Thank you in advance. > > Clément FOYER > _______________________________________________ > devel mailing list > devel@lists.open-mpi.org > https://rfd.newmexicoconsortium.org/mailman/listinfo/devel
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