2 * This file is part of the GROMACS molecular simulation package.
4 * Copyright (c) 2012,2013,2014,2015, by the GROMACS development team, led by
5 * Mark Abraham, David van der Spoel, Berk Hess, and Erik Lindahl,
6 * and including many others, as listed in the AUTHORS file in the
7 * top-level source directory and at http://www.gromacs.org.
9 * GROMACS is free software; you can redistribute it and/or
10 * modify it under the terms of the GNU Lesser General Public License
11 * as published by the Free Software Foundation; either version 2.1
12 * of the License, or (at your option) any later version.
14 * GROMACS is distributed in the hope that it will be useful,
15 * but WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
17 * Lesser General Public License for more details.
19 * You should have received a copy of the GNU Lesser General Public
20 * License along with GROMACS; if not, see
21 * http://www.gnu.org/licenses, or write to the Free Software Foundation,
22 * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
24 * If you want to redistribute modifications to GROMACS, please
25 * consider that scientific software is very special. Version
26 * control is crucial - bugs must be traceable. We will be happy to
27 * consider code for inclusion in the official distribution, but
28 * derived work must not be called official GROMACS. Details are found
29 * in the README & COPYING files - if they are missing, get the
30 * official version at http://www.gromacs.org.
32 * To help us fund GROMACS development, we humbly ask that you cite
33 * the research papers on the package. Check out http://www.gromacs.org.
36 #ifndef GMX_HARDWARE_DETECT_H
37 #define GMX_HARDWARE_DETECT_H
39 #include "gromacs/legacyheaders/typedefs.h"
45 } /* fixes auto-indentation problems */
48 /*! \brief Return whether mdrun can use more than one GPU per node
50 * The OpenCL implementation cannot use more than one GPU per node,
52 gmx_bool gmx_multiple_gpu_per_node_supported();
54 /*! \brief Return whether PP ranks can share a GPU
56 * The OpenCL implementation cannot share a GPU between ranks, for
58 gmx_bool gmx_gpu_sharing_supported();
60 /* the init and consistency functions depend on commrec that may not be
61 consistent in cuda because MPI types don't exist there. */
63 /* Construct the global hwinfo structure and return a pointer to
64 it. Caller is responsible for freeing this pointer. */
65 gmx_hw_info_t *gmx_detect_hardware(FILE *fplog, const t_commrec *cr,
66 gmx_bool bDetectGPUs);
68 /* Print information about the detected hardware to fplog (if != NULL)
69 * and to stderr the master rank.
71 void gmx_print_detected_hardware(FILE *fplog, const t_commrec *cr,
72 const gmx_hw_info_t *hwinfo);
74 void gmx_hardware_info_free(gmx_hw_info_t *hwinfo);
76 void gmx_parse_gpu_ids(gmx_gpu_opt_t *gpu_opt);
78 void gmx_select_gpu_ids(FILE *fplog, const t_commrec *cr,
79 const gmx_gpu_info_t *gpu_info,
80 gmx_bool bForceUseGPU,
81 gmx_gpu_opt_t *gpu_opt);
83 /* Check the consistency of hw_opt with hwinfo.
84 This function should be called once on each MPI rank. */
85 void gmx_check_hw_runconf_consistency(FILE *fplog,
86 const gmx_hw_info_t *hwinfo,
88 const gmx_hw_opt_t *hw_opt,
93 /* Check whether a GPU is shared among ranks, and return the number of shared
96 gpu_opt = the gpu options struct
98 returns: The number of GPUs shared among ranks, or 0 */
99 int gmx_count_gpu_dev_shared(const gmx_gpu_opt_t *gpu_opt);
107 #endif /* GMX_HARDWARE_DETECT_H */