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Subject: [OMPI users] problems with one sided MPI
From: Marcus Daniels (mdaniels_at_[hidden])
Date: 2009-08-31 10:57:13


Hi,

I'm trying to do passive one-sided communication, unlocking a receive
buffer when it is safe and then re-locking it when data has arrived.
Locking also occurs for the duration of a send.
I also tried using post/wait and start/put/complete, but with that I see
hangs on the complete.

What would cause an error like this?

[snout.lanl.gov:713] *** An error occurred in MPI_Win_lock
[snout.lanl.gov:713] *** on win 5
[snout.lanl.gov:713] *** MPI_ERR_RMA_SYNC: error executing rma sync
[snout.lanl.gov:713] *** MPI_ERRORS_ARE_FATAL (your MPI job will now abort)
[snout.lanl.gov:713] Delaying for 30 seconds before aborting
[snout.lanl.gov:712] Delaying for 30 seconds before aborting
[snout.lanl.gov:00711] 1 more process has sent help message
help-mpi-errors.txt / mpi_errors_are_fatal
[snout.lanl.gov:00711] Set MCA parameter "orte_base_help_aggregate" to 0
to see all help / error messages

Is one sided communication well-tested? I'm doing these experiments on
one machine (a Mac).

Marcus