[OpenFOAM.org] OpenFOAM 2.4.0 OpenMPI Epoll warning on parallel job -- CFD Online Discussion Forums

November 15, 2015, 07:56	OpenFOAM 2.4.0 OpenMPI Epoll warning on parallel job	#1
Talder New Member Tom Alderweireldt Join Date: Jan 2015 Location: Schilde, Belgium Posts: 16 Rep Power: 11	Hi, I ported my existing OpenFOAM cases from version 2.3.0 to 2.4.0. The 2.4.0 version compiled without issues on a Fedora 23 Linux system. When I start a parallel test case with : >> mpirun -np 8 icoFoam -parallel > log & it starts, but I get the following openmpi related warning: "[WARN] Epoll ADD(4) on fd 1 failed ..." The result is that the log file is not written while the case is running. When the job finishes, the log file appears. I can't find anything wrong with the results, but it is annoying that I can't 'tail' the log file during execution to check progress or errors. Is this a known issue, can anyone suggest a solution ? Tom.

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