16d9f71d01cc should provide a fix for this issue. George.
On Sat, May 21, 2016 at 12:08 PM, Akihiro Tabuchi < tabu...@hpcs.cs.tsukuba.ac.jp> wrote: > Hi Gilles, > > Thanks for your quick response and patch. > > After applying the patch to 1.10.2, the test code and our program which > uses nested hvector type ran without error. > I hope the patch will be applied to future releases. > > Regards, > Akihiro > > > On 2016/05/21 23:15, Gilles Gouaillardet wrote: > >> Here are attached two patches (one for master, one for v1.10) >> >> please consider these as experimental ones : >> - they cannot hurt >> - they might not always work >> - they will likely allocate a bit more memory than necessary >> - if something goes wrong, it will hopefully be caught soon enough in >> a new assert clause >> >> Cheers, >> >> Gilles >> >> On Sat, May 21, 2016 at 9:19 PM, Gilles Gouaillardet >> <gilles.gouaillar...@gmail.com> wrote: >> >>> Tabuchi-san, >>> >>> thanks for the report. >>> >>> this is indeed a bug i was able to reproduce on my linux laptop (for >>> some unknown reasons, there is no crash on OS X ) >>> >>> ompi_datatype_pack_description_length malloc 88 bytes for the datatype >>> description, but 96 bytes are required. >>> this causes a memory corruption with undefined side effects (crash in >>> MPI_Type_free, or in MPI_Win_unlock) >>> >>> iirc, we made some changes to ensure data is always aligned (Sparc >>> processors require this), and we could have missed >>> some stuff, and hence malloc less bytes than required. >>> >>> >>> Cheers, >>> >>> Gilles >>> >>> On Sat, May 21, 2016 at 5:50 PM, Akihiro Tabuchi >>> <tabu...@hpcs.cs.tsukuba.ac.jp> wrote: >>> >>>> Hi, >>>> >>>> At OpenMPI 1.10.2, MPI_Type_free crashes with a many nested derived >>>> type after using MPI_Put/Get >>>> with the datatype as target_datatype. >>>> The test code is attached. >>>> In the code, MPI_Type_free crashes if N_NEST >= 4. >>>> >>>> This problem occurs at OpenMPI 1.8.5 or later. >>>> There is no problem at OpenMPI 1.8.4, MPICH 3.2, and MVAPICH 2.1. >>>> >>>> Does anyone know about the problem? >>>> >>>> Regards, >>>> Akihiro >>>> >>>> -- >>>> Akihiro Tabuchi >>>> HPCS Lab, Univ. of Tsukuba >>>> tabu...@hpcs.cs.tsukuba.ac.jp >>>> >>>> _______________________________________________ >>>> users mailing list >>>> us...@open-mpi.org >>>> Subscription: https://www.open-mpi.org/mailman/listinfo.cgi/users >>>> Link to this post: >>>> http://www.open-mpi.org/community/lists/users/2016/05/29260.php >>>> >>>> >>>> _______________________________________________ >>>> users mailing list >>>> us...@open-mpi.org >>>> Subscription: https://www.open-mpi.org/mailman/listinfo.cgi/users >>>> Link to this post: >>>> http://www.open-mpi.org/community/lists/users/2016/05/29262.php >>>> >>> > > -- > Akihiro Tabuchi > HPCS Lab, Univ. of Tsukuba > tabu...@hpcs.cs.tsukuba.ac.jp > _______________________________________________ > users mailing list > us...@open-mpi.org > Subscription: https://www.open-mpi.org/mailman/listinfo.cgi/users > Link to this post: > http://www.open-mpi.org/community/lists/users/2016/05/29263.php >
