You may have misunderstood. The detailed number I gave are obtained on distributions that are not CentOS, and ok, it can makes sense between 32 and 64 bits. But on CentOS 6.2, 64bits, I obtain: SH: 103MB PYTHON: 114MB R: 200MB This is from a freshly installed CentOS 6.2 machine, without anything else. Thus the other components of our cluster are not involved here. This machine has 16 cores. This is MUCH more than other 64 bits distributions, as I wrote the ratios are between 2 and 7. 2012/9/26 Michael Hennebry <hennebry at web.cs.ndsu.nodak.edu>: > On Wed, 26 Sep 2012, m.roth at 5-cent.us wrote: > > >> Jérémie Dubois-Lacoste wrote: > > >>> Python script: >>> Avg Min Max >>> 32 bits 8500 5004 11132 >>> 64 bits 32800 30000 36336 >> >> >> 8500 * 2 = 17000 >> 5004 * 2 = 10007 >> 11132 * 2 = 22264 >> >> So that ranges from 2-2.5 larger. > > > Huh? > 3*8500=25500 > < 32800 > 3*5004=15012 > < 30000 > 3*11132=33396 > < 36336 > > >>> R: >>> Avg Min Max >>> 32 bits 26900 21000 33452 >>> 64 bits 100200 93008 97496 > > > 3*26900= 80700 > < 100200 > 4*21000=84000 > < 93008 > 2.9*33452< 97011 > < 97496 > > -- > Michael hennebry at web.cs.ndsu.NoDak.edu > "On Monday, I'm gonna have to tell my kindergarten class, > whom I teach not to run with scissors, > that my fiance ran me through with a broadsword." -- Lily > _______________________________________________ > CentOS mailing list > CentOS at centos.org > http://lists.centos.org/mailman/listinfo/centos >