Hi, is anyone aware of troubles with PHDF5 and IntelMPI? A test code to reads an HDF5 file in parallel has trouble when scaling if I run it with IntelMPI, but no trouble if I run it, for example, with POE.
I'm using Intel compilers 13.0.1, IntelMPI 4.1.3.049, and HDF5 1.8.10 The code just reads a 800x800x800 HDF5 file, and the times I get for reading it are: 128 procs - 0.7262E+01 1024 procs - 0.9815E+01 1280 procs - 0.9930E+01 1600 procs - ??????? (it gest stalled...) But the same code (compiled with the above modules), but submitted with IBM's POE instead of IntelMPI has no trouble with 1600 procs (actually no trouble at all with up to 4096 procs) and it reads the file in 0.8963E+01 secs. Any help appreciated, -- Ángel de Vicente http://www.iac.es/galeria/angelv/ --------------------------------------------------------------------------------------------- ADVERTENCIA: Sobre la privacidad y cumplimiento de la Ley de Protecci�n de Datos, acceda a http://www.iac.es/disclaimer.php WARNING: For more information on privacy and fulfilment of the Law concerning the Protection of Data, consult http://www.iac.es/disclaimer.php?lang=en
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