Lisandro, We all use similar mechanisms to handle internal releases. Let's give some credit to the MPI folks who (for once) designed a clear and workable mechanism to achieve this.
George. On Wed, Aug 27, 2014 at 10:15 AM, Lisandro Dalcin <dalc...@gmail.com> wrote: > On 26 August 2014 23:59, George Bosilca <bosi...@icl.utk.edu> wrote: > > Lisandro, > > > > You rely on a feature clearly prohibited by the MPI standard. Please read > > the entire section I pinpointed you to (8.7.1). > > > > There are 2 key sentences in the section. > > > > 1. When MPI_FINALIZE is called, it will first execute the equivalent of > an > > MPI_COMM_FREE on MPI_COMM_SELF. > > > > 2. The freeing of MPI_COMM_SELF occurs before any other parts of MPI are > > affected. Thus, for example, calling MPI_FINALIZED will return false in > any > > of these callback functions. Once done with MPI_COMM_SELF, the order and > > rest of the actions taken by MPI_FINALIZE is not specified. > > > > Thus when MPI is calling the equivalent of MPI_COMM_FREE on your > > communicator, it is too late the MPI is already considered as finalized. > > Moreover, relying on MPI to cleanup your communicators is already bad > habit, > > which is rightfully punished by Open MPI. > > > > After much thinking about it, I must surrender :-), you were right. > Sorry for the noise. > > > -- > Lisandro Dalcin > ============ > Research Scientist > Computer, Electrical and Mathematical Sciences & Engineering (CEMSE) > Numerical Porous Media Center (NumPor) > King Abdullah University of Science and Technology (KAUST) > http://numpor.kaust.edu.sa/ > > 4700 King Abdullah University of Science and Technology > al-Khawarizmi Bldg (Bldg 1), Office # 4332 > Thuwal 23955-6900, Kingdom of Saudi Arabia > http://www.kaust.edu.sa > > Office Phone: +966 12 808-0459 > _______________________________________________ > devel mailing list > de...@open-mpi.org > Subscription: http://www.open-mpi.org/mailman/listinfo.cgi/devel > Link to this post: > http://www.open-mpi.org/community/lists/devel/2014/08/15735.php >
