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39 #include "gromacs/legacyheaders/gmx_cpuid.h"
40 #include "gromacs/legacyheaders/types/simple.h"
46 } /* fixes auto-indentation problems */
49 struct gmx_device_info_t;
51 /* Possible results of the GPU detection/check.
53 * The egpuInsane value means that during the sanity checks an error
54 * occurred that indicates malfunctioning of the device, driver, or
55 * incompatible driver/runtime. */
58 egpuCompatible = 0, egpuNonexistent, egpuIncompatible, egpuInsane
61 /* Textual names of the GPU detection/check results (see e_gpu_detect_res_t). */
62 static const char * const gpu_detect_res_str[] =
64 "compatible", "inexistent", "incompatible", "insane"
67 /* GPU device information -- for now with only CUDA devices
68 * The gmx_hardware_detect module initializes it. */
71 gmx_bool bDetectGPUs; /* Did we try to detect GPUs? */
72 int n_dev; /* total number of GPU devices detected */
73 struct gmx_device_info_t *gpu_dev; /* GPU devices detected in the system (per node) */
74 int n_dev_compatible; /* number of compatible GPUs */
77 /* Hardware information structure with CPU and GPU information.
78 * It is initialized by gmx_detect_hardware().
79 * NOTE: this structure may only contain structures that are globally valid
80 * (i.e. must be able to be shared among all threads) */
83 struct gmx_gpu_info_t gpu_info; /* Information about GPUs detected in the system */
85 gmx_cpuid_t cpuid_info; /* CPUID information about CPU detected;
86 NOTE: this will only detect the CPU thread 0 of the
87 current process runs on. */
88 int nthreads_hw_avail; /* Number of hardware threads available; this number
89 is based on the number of CPUs reported as available
90 by the OS at the time of detection. */
94 /* The options for the thread affinity setting, default: auto */
96 threadaffSEL, threadaffAUTO, threadaffON, threadaffOFF, threadaffNR
99 /* GPU device selection information -- for now with only CUDA devices */
102 char *gpu_id; /* GPU id's to use, each specified as chars */
103 gmx_bool bUserSet; /* true if the GPUs in dev_use are manually provided by the user */
105 int n_dev_compatible; /* number of compatible GPU devices that could be used */
106 int *dev_compatible; /* array of compatible GPU device IDs, from which automatic selection occurs */
107 int n_dev_use; /* number of GPU devices selected to be used, either by the user or automatically */
108 int *dev_use; /* array mapping from PP rank index to GPU device ID; GPU IDs can be listed multiple times when ranks share them */
111 /* Threading and GPU options, can be set automatically or by the user */
113 int nthreads_tot; /* Total number of threads requested (TMPI) */
114 int nthreads_tmpi; /* Number of TMPI threads requested */
115 int nthreads_omp; /* Number of OpenMP threads requested */
116 int nthreads_omp_pme; /* As nthreads_omp, but for PME only nodes */
117 int thread_affinity; /* Thread affinity switch, see enum above */
118 int core_pinning_stride; /* Logical core pinning stride */
119 int core_pinning_offset; /* Logical core pinning offset */
121 gmx_gpu_opt_t gpu_opt; /* The GPU options */
128 #endif /* HWINFO_H */