From: Axel Kohlmeyer (
Date: Tue Jun 07 2011 - 05:08:17 CDT

On Tue, Jun 7, 2011 at 5:39 AM, Joyce Tan <> wrote:
> Hi,
> I had my simulation extended to 20ns after its first run of 5ns.
> Then I realised that the total frames I have at 20ns is too large and I
> would like to re-save them at less frames.
> I saved them by setting dcdfreq at 250. Now I would like to decrease the
> number of frames by saving the dcd at every 1000 steps.
> Anyway I can do this?

you can change this only for "future" frames, not for already
written ones. you can to use a tool like catdcd to reduce the
data frequency in those.


> Thanks
> Regards,
> Joyce

Dr. Axel Kohlmeyer
Institute for Computational Molecular Science
Temple University, Philadelphia PA, USA.