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抱歉我在使用gromacs5.0.7时遇到了同样的问题(超算上自带版本较老),最早也是觉得加 -np 2 就可以,但是加了以后仍然会有同样的错误,不知道是不是版本的问题
Using 1 MPI process
Using 12 OpenMP threads
2 GPUs detected on host gpu01.hpc.pku.edu.cn:
#0: NVIDIA Tesla P100-PCIE-16GB, compute cap.: 6.0, ECC: yes, stat: compatible
#1: NVIDIA Tesla P100-PCIE-16GB, compute cap.: 6.0, ECC: yes, stat: compatible
2 GPUs user-selected for this run.
Mapping of GPUs to the 1 PP rank in this node: #0, #1
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Program gmx_mpi, VERSION 5.0.7
Source code file: /gpfs/share/packages/gromacs/5.0.7-gpu/src/gromacs/gmxlib/gmx_detect_hardware.c, line: 357
Fatal error:
Incorrect launch configuration: mismatching number of PP MPI processes and GPUs per node.
gmx_mpi was started with 1 PP MPI process per node, but you provided 2 GPUs.
For more information and tips for troubleshooting, please check the GROMACS
website at http://www.gromacs.org/Documentation/Errors
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我也尝试了不去指定gpu,但是很尴尬的是两个进程都默认使用了gpu0(并且默认每个进程都用了所有的核)
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