On Mar 3, 2010, at 11:35 AM, Richard Treumann wrote:
If the application will make MPI calls from multiple threads and
MPI_INIT_THREAD has returned FUNNELED, the application must be
willing to take the steps that ensure there will never be concurrent
calls to MPI from the threads. The threads will take turns - without
fail.
Minor nitpick: if the implementation returns FUNNELED, only the main
thread (basically the thread that called MPI_INIT_THREAD, see MPI-2.2
pg 386 for def'n) may make MPI calls. Dick's paragraph above is
correct if you replace FUNNELED with SERIALIZED.
-Dave
