Hi, Gromacs < 5.0 uses a Mersenne twister. See gmx_random.h. Starting with 5.0 it uses Random123 threefry2x64. Why do you think your results are affected by the PRNG?
Roland On Wed, Oct 29, 2014 at 6:23 PM, Johnny Lu <johnny.lu...@gmail.com> wrote: > Hi. > > Before I start to feel optimistic about my alanine tripeptide simulation, > can I know > > which pseudo-random number algorithm does my installation of gromacs 4.6.6 > use? > > It was installed on linux centos 5 with kernel 2.6.32-220.7.1.el6.x86_64, > and the machine has 12 intel cpu and no gpu. > > I was using the V-rescale thermostat. > > Thanks again. > -- > Gromacs Users mailing list > > * Please search the archive at > http://www.gromacs.org/Support/Mailing_Lists/GMX-Users_List before > posting! > > * Can't post? Read http://www.gromacs.org/Support/Mailing_Lists > > * For (un)subscribe requests visit > https://maillist.sys.kth.se/mailman/listinfo/gromacs.org_gmx-users or > send a mail to gmx-users-requ...@gromacs.org. > -- ORNL/UT Center for Molecular Biophysics cmb.ornl.gov 865-241-1537, ORNL PO BOX 2008 MS6309 -- Gromacs Users mailing list * Please search the archive at http://www.gromacs.org/Support/Mailing_Lists/GMX-Users_List before posting! * Can't post? Read http://www.gromacs.org/Support/Mailing_Lists * For (un)subscribe requests visit https://maillist.sys.kth.se/mailman/listinfo/gromacs.org_gmx-users or send a mail to gmx-users-requ...@gromacs.org.