Source: blacs-mpi
Version: 1.1-31
Severity: normal

As recommended by the OpenMPI project [1], please build BLACS with the
-DUseMpi2 flag, i.e., by adding `TRANSCOMM = -DUseMpi2` to Bmake.inc.
This allows BLACS to use the MPI2 MPI_Comm_f2c command replacing a
fragile and blocking backup implementation.

I believe we are already building the other implementations correctly,
as we already set TRANSCOMM for mpich, mpich2, and lam.

[1]: http://www.open-mpi.org/faq/?category=mpi-apps#blacs

-Brad


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