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BUG: sw4 fails to flush output on FATAL ERROR (hiding error message) #101

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michaelkarlcoleman opened this issue Aug 13, 2021 · 0 comments

michaelkarlcoleman commented Aug 13, 2021

The cout stream needs to be flushed before calling MPI_Abort, otherwise the error message is not printed, at least in our case.

(Invoking with unbuffer sw4 is a workaround, but not a good one.)

sw4/src/parseInputFile.C

Lines 5163 to 5165 in 67ab458

    
                if (m_myRank == 0) 
        
           cout << sourceposerr.str(); 
        
                MPI_Abort(MPI_COMM_WORLD, 1);

Probably the code should be examined for other such instances.

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