[gmx-users] GROMACS in parallel on Dual CPU Linux machine
Pratul K. Agarwal
pagarwal at linus.ornl.gov
Tue May 20 17:36:01 CEST 2003
A lot of people have responded to my queries. Here is a
1. The motherboard is ASUS A7M266-D and the system runs
well without any problems. (I too have had some
experience with Tyan Tiger MP S2460 -- they kept dropping
like dead flies).
2. These boxes are right next to cooling vent and have
plenty of ventilation (the nearby temp. is around
65F/19C); there is an extra system fan in addition to
power supply fan. I am not entirely convinced that
this is heating issue. A suggestion has been made that
this might be a communication issue. Well since the
communication is through the loopback device (or is it
not for the same host?), I am not clear what other
hardware might be facing heating problems.
3. I have been able to run GAMESS, Gaussian98, AMBER (sander
v7) in parallel without any problems (numbers do match
single CPU runs).
4. I found out that I have Registered Non ECC memory. I am
wondering if this might have anything to do with it.
*Most Importantly* I have not been able to reproduce the
errors yesterday. The systems were rebooted before these
tests. On the other hand when I noticed these errors
previously there were other jobs running on the same
machine. I will keep an eye on the issue and report anything
Thanks to all who responded.
More information about the gromacs.org_gmx-users