Dear all, I am trying to run a two MD simulations on one workstation equipped with 4 GPU. First I started a simulation with the following command:
gmx mdrun -v -deffnm md -ntmpi 12 -gpu_id 0,1 By the nvidia-smi command I find the utilizations of GPU 0 and 1 are 74 and 80%, respectively. Then I started another simulation with: gmx mdrun -v -deffnm md -ntmpi 12 -gpu_id 2,3 then the utilizations of GPU 0 and 1 decreased to 20% and 23%, and the utilizations of GPU 2 and 3, which ran the second simulation, are 12 and 15%. Both of the two simulations ran with unbearable low speed. I feel it very stange because a few days ago I also ran two simulations on the same workstation with the same mdrun commands, but the utilizations of all four GPU were higer than 70%. Do you know what may affect the GPU utilizations and how to correct it? Best regards. -- Gromacs Users mailing list * Please search the archive at http://www.gromacs.org/Support/Mailing_Lists/GMX-Users_List before posting! * Can't post? Read http://www.gromacs.org/Support/Mailing_Lists * 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.
