[AMBER] Too many iterations in routine! in RMSD calculation

From: kungking Hanpaibool <kunkungking.hotmail.com>
Date: Sat, 29 Apr 2017 09:16:06 +0000

Dear Amber straff

for rmsd caculation via cpptraj I try to use this below script.

trajin ../../eq/md/5xxx_md45.nc
trajin ../../eq/md/5xxx_md46.nc
trajin ../../eq/md/5xxx_md47.nc
trajin ../../eq/md/5xxx_md48.nc
trajin ../../eq/md/5xxx_md49.nc

center :1-325,326 mass origin
image origin center
reference ../../5xxx.rst7


rms reference :1-325,326 out protein_ligand_100ns.rms
rms reference :1-325 out protein_100ns.rms
rms reference :326 out ligand_100ns.rms
rms reference :1-325.CA,C,O,N out protein_backbone_100ns.rms


and also this script


trajin ../../eq/md/5xxx_md45.nc
trajin ../../eq/md/5xxx_md46.nc
trajin ../../eq/md/5xxx_md47.nc
trajin ../../eq/md/5xxx_md48.nc
trajin ../../eq/md/5xxx_md49.nc


autoimage
reference ../../5xxx.rst7


rms reference :1-325,326 out protein_ligand_100ns.rms
rms reference :1-325 out protein_100ns.rms
rms reference :326 out ligand_100ns.rms
rms reference :1-325.CA,C,O,N out protein_backbone_100ns.rms



When I finished the ligand and backbone protein's result showed
#Frame RMSD_00004
       1 0.0000
       2 0.0000
       3 0.0000
       4 0.0000
       5 0.0000
       6 0.0000
       7 0.0000
       8 0.0000
       9 0.0000
      10 0.0000
      11 0.0000
      12 0.0000
      13 0.0000
      14 0.0000
      15 0.0000

but for protein's result it show the rmsd value.

When I saw the .log I found

----- 5lrnD_md49.nc (1-200, 1) -----
Too many iterations in routine!
Convergence failed.
Too many iterations in routine!
Convergence failed.
Too many iterations in routine!
Convergence failed.
Too many iterations in routine!
Convergence failed.
Too many iterations in routine!


So I didnt sure that can I trust the protein RMSD result?
and What's happen? for another result

Or I miss something for RMSD's script.
Have you found the error like this? Could you suggest me How can I solve this problem?

Best wishes,
Kungking





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Received on Sat Apr 29 2017 - 02:30:02 PDT
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