Justin A. Lemkul wrote:
Quoting JW Feng <[EMAIL PROTECTED]>:

Hello,

This is a new warning that appears when executing version 3.3.2 of
grompp to create a .tpr file.  Should I be concerned?

WARNING 1 [file aminoacids.dat, line 1]:
  T-Coupling group PROTEIN has fewer than 10% of the atoms (504 out of
  24494)
  Maybe you want to try Protein and Non-Protein instead?
WARNING 2 [file aminoacids.dat, line 1]:
  T-Coupling group CL- has fewer than 10% of the atoms (5 out of 24494)
  Maybe you want to try Protein and Non-Protein instead?

My mdp options are:
;; TEMPERATURE COUPLING
tcoupl                  = berendsen
tc_grps                 = PROTEIN  SOL  CL-
tau_t                   = 0.1  0.1  0.1
ref_t                   = 300 300 300

Don't couple solvent and ions separately.  Merge them into one group with
make_ndx.

Or like the warning suggests, use the default Non-Protein group in the (auto-created) index groups.

http://wiki.gromacs.org/index.php/Thermostats

-Justin

Mark
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