[gmx-users] GPU error

2019-03-25 Thread RAHUL SURESH
Hi I have a system with 2 8 core gold processor and 2 1080Ti card. During mdrun, the job utilize only one GPU card. Command: gmx_mpi mdrun -v -deffnm md Trying various command line I could use both the card but end up with very poor performance. command: mpirun -np 2 gmx_mpi mdrun -v -deffnm m

Re: [gmx-users] GPU error

2019-03-25 Thread Mark Abraham
Hi, What did you learn from the log file when it chose to use only one GPU? If your system is tiny then two won't help... Mark On Mon., 25 Mar. 2019, 11:28 RAHUL SURESH, wrote: > Hi > > I have a system with 2 8 core gold processor and 2 1080Ti card. During > mdrun, the job utilize only one GP

Re: [gmx-users] GPU error

2019-03-25 Thread RAHUL SURESH
Hi Dr Mark System is pretty tiny only with 15000 atoms. 1 GpU is automatically selected. I get a note stating potentially sub-optimal launch configuration, gmx started with less pp Mpi process for node than GPUs available. So the use of GPU is automated depending on the size of the system? Also

Re: [gmx-users] GPU error

2019-03-26 Thread Justin Lemkul
On 3/26/19 2:05 AM, RAHUL SURESH wrote: Hi Dr Mark System is pretty tiny only with 15000 atoms. 1 GpU is automatically selected. You will certainly not benefit from trying to use multiple GPUs for such a small system. I get a note stating potentially sub-optimal launch configuration, gm

Re: [gmx-users] GPU error

2019-03-26 Thread RAHUL SURESH
On Tue 26 Mar, 2019, 6:09 PM Justin Lemkul, wrote: > > > On 3/26/19 2:05 AM, RAHUL SURESH wrote: > > Hi Dr Mark > > > > System is pretty tiny only with 15000 atoms. 1 GpU is automatically > > selected. > > You will certainly not benefit from trying to use multiple GPUs for such > a small system.

[gmx-users] GPU ERROR RUNING A SIMULATION

2018-09-26 Thread Mario Andres Rodriguez Pineda
Hi again every body. I'm tryin running a simulation of a protein in water using Gromacs 2018.3. When i try to minimize the energy in NVT equilibration this send me this error during mdrun: Reading file cbd12_nvt.tpr, VERSION 2018.3 (single precision) Multiple energy groups is not implemented for G

Re: [gmx-users] GPU ERROR RUNING A SIMULATION

2018-09-26 Thread Kevin Boyd
Hi, We don't currently support energy groups on GPUs with the Verlet cutoff scheme - see the table linked below. http://manual.gromacs.org/documentation/2018/user-guide/cutoff-schemes.html To enable the simulation to run on GPUs, remove the energy groups line (and energy group exclusions, if you

Re: [gmx-users] GPU ERROR RUNING A SIMULATION

2018-09-27 Thread Mark Abraham
Hi, On Thu, Sep 27, 2018 at 12:45 AM Mario Andres Rodriguez Pineda < mand...@iq.usp.br> wrote: > Hi again every body. > I'm tryin running a simulation of a protein in water using Gromacs 2018.3. > When i try to minimize the energy in NVT equilibration this send me this > error during mdrun: > > R