[gmx-users] increasing simulation time via temperature rising

2015-05-18 Thread nazli kashani javid
Hi all

I'm studying effect of temperature on incredibly stable protein. I've
started simulating at 300K then, 400K and 500K. 30ns simulating takes about
4days for these three temperature in a same system. when I want to run 30ns
simulation at 600K, it will take more than 20 days

does rising temperature, have any affect on time of simulation?
 is this increasing in time reasonable?

thanks
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Re: [gmx-users] increasing simulation time via temperature rising

2015-05-18 Thread Tsjerk Wassenaar
Hi Nazli,

No, that's not related to temperature. Otherwise you'd probably see a
trend. I guess with the 600K simulation you have another process that
interferes and eats CPU. Mind that a simulation running on four/eight cores
will be affected significantly by anything that uses a considerable part of
a CPU.

Cheers,

Tsjerk
On May 18, 2015 08:48, nazli kashani javid nazlikja...@gmail.com wrote:

 Hi all

 I'm studying effect of temperature on incredibly stable protein. I've
 started simulating at 300K then, 400K and 500K. 30ns simulating takes about
 4days for these three temperature in a same system. when I want to run 30ns
 simulation at 600K, it will take more than 20 days

 does rising temperature, have any affect on time of simulation?
  is this increasing in time reasonable?

 thanks
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Re: [gmx-users] increasing simulation time via temperature rising

2015-05-18 Thread massimo sandal
Hi Nazli,

Also, I doubt simulations beyond 400 K make any sense: not only such
conditions are implausible for a protein to exist in, but, as far as I
know, the force fields are not parametrized to work so far beyond room
temperature.

cheers,
M.

2015-05-18 9:05 GMT+02:00 Tsjerk Wassenaar tsje...@gmail.com:

 Hi Nazli,

 No, that's not related to temperature. Otherwise you'd probably see a
 trend. I guess with the 600K simulation you have another process that
 interferes and eats CPU. Mind that a simulation running on four/eight cores
 will be affected significantly by anything that uses a considerable part of
 a CPU.

 Cheers,

 Tsjerk
 On May 18, 2015 08:48, nazli kashani javid nazlikja...@gmail.com
 wrote:

  Hi all
 
  I'm studying effect of temperature on incredibly stable protein. I've
  started simulating at 300K then, 400K and 500K. 30ns simulating takes
 about
  4days for these three temperature in a same system. when I want to run
 30ns
  simulation at 600K, it will take more than 20 days
 
  does rising temperature, have any affect on time of simulation?
   is this increasing in time reasonable?
 
  thanks
  --
  Gromacs Users mailing list
 
  * Please search the archive at
  http://www.gromacs.org/Support/Mailing_Lists/GMX-Users_List before
  posting!
 
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  * For (un)subscribe requests visit
  https://maillist.sys.kth.se/mailman/listinfo/gromacs.org_gmx-users or
  send a mail to gmx-users-requ...@gromacs.org.
 
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