Le 07/01/2014 12:55, Tina ODAKA a écrit :
hello loic, hi your job change its behaviour around 11:15, which is about 100 minutes after you submitted your job.
until then, it only used 1 core. but from that point it starts to use more than 1 core, on average use 2 core, sometime it goes up to 4 cores.
can anyone explain to me what kind of parallelism you are using for each of your java process?? actually, mem is exceeding 2.2g our caparmor jobs runs only one java process.
Into this java process, we are using java "soft" thread, but maybe since recents releases (java 7) java can parallelize thus threads in multiples cores. For now, i don't know if we can control this behaviour with java. Is there a possibility to reduce job's visible core to one (with qsub options or env vars) ? Regards. -- Éric Chatellier - Code Lutin Tel: 02.40.50.29.28 - http://www.codelutin.com