Hi, I am using the latest git version of gromacs, compiled with gcc 4.6.2 and openmpi 1.6.3. I start the program using the usual mpirun -np 8 mdrun_mpi ... This always leads to a warning:
Using 1 MPI process WARNING: On node 0: oversubscribing the available 0 logical CPU cores per node with 1 MPI processes. Checking the processes confirms that there is only one of the 8 available cores used. Running mdrun_mpi with an additional debug -1: Detected 0 processors, will use this as the number of supported hardware threads. hw_opt: nt 0 ntmpi 0 ntomp 1 ntomp_pme 1 gpu_id '' 0 CPUs detected, but 8 was returned by CPU_COUNTIn gmx_setup_nodecomm: hostname 'myComputerName', hostnum 0 ... 0 CPUs detected, but 8 was returned by CPU_COUNTOn rank 0, thread 0, core 0 the affinity setting returned 0 I also made another try by compiling gromacs using some experimental version of gcc 4.8, which did not help in this case. Is this a known problem? Obviously gromacs detects the right value with CPU_COUNT, why is it not just taking that value? Best regards, Christian -- gmx-users mailing list gmx-users@gromacs.org http://lists.gromacs.org/mailman/listinfo/gmx-users * Please search the archive at http://www.gromacs.org/Support/Mailing_Lists/Search before posting! * Please don't post (un)subscribe requests to the list. Use the www interface or send it to gmx-users-requ...@gromacs.org. * Can't post? Read http://www.gromacs.org/Support/Mailing_Lists
