Hello,
I am using LAM/MPI parallel computing. LAM 6.5.6 was installed. Recently I
upgraded the network from a Megabit to Gigabit Ethernet. I changed the
switch and network card. So now I use a Gigabit switch and the Intel
PRO/1000 MT Destop Adapter.
As a result, it is processing a lot faster, but my jobs are no longer
stable. With the exact same job submitted at different times, different
results were obtained. Many times, process finished with error. Sometimes
nodes crash. (I always execute lamclean before each mpirun)
What could cause the problem? Hardware? Do I have to re-install LAM?
Any suggestions are appreciated.
Thank you,
-Watit
Center of Combustion and Environmental Research
Department of Mechanical Engineering
University of Colorado at Boulder
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