[gmx-users] At what point is the random seed generated?

[Mark Abraham]

Indeed. grompp does report the seed it uses to stderr.

Mark


On Tue, Jan 28, 2014 at 8:51 AM, David van der Spoel
<spoel at xray.bmc.uu.se>wrote:

> On 2014-01-28 08:37, Trayder Thomas wrote:
>
>> Hi,
>> When using 'gen-seed = -1' at what point is the random seed assigned?
>>
>> e.g. Does it use the process ID of grompp and embed the seed number in the
>> tpr file, or does it use the process ID of mdrun?
>>
>> I ask because I have 50 identical simulations started from the same tpr
>> file :(
>>
>> Thanks,
>> -Trayder
>>
>>  I guess you found out. Sorry about that. It is done in grompp and same
> tpr should give reproducible results. So you want to generate 50 different
> tpr files.
>
> --
> David van der Spoel, Ph.D., Professor of Biology
> Dept. of Cell & Molec. Biol., Uppsala University.
> Box 596, 75124 Uppsala, Sweden. Phone:  +46184714205.
> spoel at xray.bmc.uu.se    http://folding.bmc.uu.se
>
> --
> 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-request at gromacs.org.
>