In linux ( fedora ) , is there any limit on the number of instances of the same program that can be run simultaneously ? I am using libsvm , and want to run ./svm-train simultaneously for 9 different files < in 9 different terminals > .. Will this cause any problem ?
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1 Answer
The limit will be, most likely, memory. SVM training uses a lot. If you run many, you will thrash unless you have a large quantity of RAM.
answered Mar 10, 2010 at 13:40
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oh , the system has 1 GB RAM , and it took me more than 12 hours when i ran 4 instances simultaneously .. Will it have taken lesser time if i had run one process at a time ?– trinityMar 10, 2010 at 13:53
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How much memory was in use ? if > 1Gb, yes you would get significant speedup. If < 1Gb, no speedup. Also, you will likely not get any speedup if you run nr of instances > nr of processors– nosMar 10, 2010 at 13:55
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You can get an idea how much memory each process uses with htop or top, but multiple instances of the same program will add up to a falsely high number because they're using the same instance of libraries. It would be pretty simple to just watch swapping using top and see whether your RAM is overloaded.– CarlFSep 30, 2010 at 19:07
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Training a discriminative model like an SVM involves a gigantic quantity of data. Oct 1, 2010 at 1:45