Hi Gilles, Thank you for your reply. I am using Openmpi 3.0.0. I tried the command you recommend, and it works right now. Perhaps this bug is still there?
On Thu, Apr 12, 2018 at 10:06 PM, Gilles Gouaillardet < gilles.gouaillar...@gmail.com> wrote: > Which version of Open MPI are you running ? > This reminds me of a bug in CMA that has already been fixed. > > > can you try again with > > > mpirun --mca btl_vader_single_copy_mechanism none ... > > > Cheers, > > Gilles > > On Fri, Apr 13, 2018 at 1:51 PM, Kaiming Ouyang <kouya...@ucr.edu> wrote: > > Hi all, > > I am trying to test the bandwidth of intra-MPI send and recv. The code is > > attached here. When I give the input 2048 (namely each process will send > and > > receive 2GB data), the program reported: > > Read 2147479552, expected 2147483648, errno = 95 > > Read 2147479552, expected 2147483648, errno = 98 > > Read 2147479552, expected 2147483648, errno = 98 > > Read 2147479552, expected 2147483648, errno = 98 > > > > Does this mean Openmpi does not support the send and recv where data > size is > > larger than 2GB, or is there a bug in my code? Thank you. > > > > > > _______________________________________________ > > users mailing list > > firstname.lastname@example.org > > https://lists.open-mpi.org/mailman/listinfo/users > _______________________________________________ > users mailing list > email@example.com > https://lists.open-mpi.org/mailman/listinfo/users >
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