[gmx-users] dual xeon p4
spoel at xray.bmc.uu.se
Fri Jul 11 08:19:01 CEST 2003
On Fri, 2003-07-11 at 08:22, Y U Sasidhar wrote:
> David wrote:
> >2.2 GHz, Supermicro motherboard, 2Gb DDR, Hyperthreading turned off.
> I have dual xeons 1.8 MHz and 2.4 MHz
> Currently Linux sees 4 cpus due to hyper threading.
> What is the reason for turning off hyper threading ?
Has to do with OS. I had some case where Linux would schedule a two
processor job on the two threads of a single processor while the other
processor was idle.
> A few days ago I reported a mpirun problem. Is there any connection ?
Don't know. If you have performance problems check that you have
compiled LAM with support for usysv shared memory communication.
> gmx-users mailing list
> gmx-users at gromacs.org
> Please don't post (un)subscribe requests to the list. Use the
> www interface or send it to gmx-users-request at gromacs.org.
Dr. David van der Spoel, Dept. of Cell and Molecular Biology
Husargatan 3, Box 596, 75124 Uppsala, Sweden
phone: 46 18 471 4205 fax: 46 18 511 755
spoel at xray.bmc.uu.se spoel at gromacs.org http://xray.bmc.uu.se/~spoel
More information about the gromacs.org_gmx-users