On Thu, Jan 31, 2008 at 09:26:07PM +0100, Rolf Rabenseifner wrote:

Dick, I fully agree. I withdraw my proposals with OpenMP and come back to your text, adding the forward reference to MPI_IS_THREAD_MAIN:

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MPI_THREAD_FUNNELED The process may be multi-threaded, but the application must insure that only the main thread makes MPI calls (for the definition of main thread, see MPI_IS_THREAD_MAIN).

By the way, this clarification is independent of any additional level of thread support taht may be specified in further MPI versions.

I also agree with this version of the clarification. BTW, it should be "ensure", not "insure". The current MPI 2.0 doc has "ensure" 28 times and "insure" 0 times. -- greg