Fix Ave/correlate error

Hi All,
I am usnig the Green Kubo auto-correlation method to calculate the thermal conductivity of different regions in my system. I need for the groups to be dynamic but fix ave/correlate does not allow the use of dynamic groups. Do you have any suggestions of how I could get around this issue?
Regards,
Peter

Hi All,
I am usnig the Green Kubo auto-correlation method to calculate the thermal conductivity of different regions in my system. I need for the groups to be dynamic but fix ave/correlate does not allow the use of dynamic groups. Do you have any suggestions of how I could get around this issue?

your statement doesn’t make much sense. fix ave/correlate processes global scalars and thus disregards the fix’ group id, so there is no point in using a dynamic group when defining the fix. just use group “all”. you would have to use a dynamic group on the computes (or fixes) that would be computing the scalar(s) that you are trying to correlate. the documentation for fix ave/correlate explains this.

axel.