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filehandle value problem MPI MPI_FILE_OPEN on Windows

Angel_B_
Beginner
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Testing the Intel MPI libraries in windows 8.1.  I encounter some problems in the following statement.

call MPI_FILE_OPEN(MPI_COMM_WORLD, filename, MPI_MODE_WRONLY + MPI_MODE_CREATE, MPI_INFO_NULL, fh, ierror)

I get return values for fh looking like this  -1212974328,  What's going on?

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