I have a user who reports that sending a broadcast of
540*1080 of reals (just over 2GB) fails with this:
*** An error occurred in MPI_Bcast
*** on communicator MPI_COMM_WORLD
*** MPI_ERR_TRUNCATE: message truncated
*** MPI_ERRORS_ARE_FATAL (your MPI job will now abort)
I was reading the archives and there appears to be an issue with large messages. I was a little confused, is there a way to send messages larger than 2GB?
The user has access to some IB machines, per a note in the archives there was an issue with writev() would this issue only be related to messages over ethernet?
Thanks just trying to get some clarification.
Brock Palen
www.umich.edu/~brockp
Center for Advanced Computing
brockp_at_[hidden]
(734)936-1985
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