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40 #include "nbnxn_cuda_types_ext.h"
41 #include "../gmx_cpuid.h"
47 } /* fixes auto-indentation problems */
50 /* Possible results of the GPU detection/check.
52 * The egpuInsane value means that during the sanity checks an error
53 * occurred that indicates malfunctioning of the device, driver, or
54 * incompatible driver/runtime. */
57 egpuCompatible = 0, egpuNonexistent, egpuIncompatible, egpuInsane
60 /* Textual names of the GPU detection/check results (see e_gpu_detect_res_t). */
61 static const char * const gpu_detect_res_str[] =
63 "compatible", "inexistent", "incompatible", "insane"
66 /* GPU device information -- for now with only CUDA devices.
67 * The gmx_hardware_detect module initializes it. */
70 gmx_bool bDetectGPUs; /* Did we try to detect GPUs? */
71 int ncuda_dev; /* total number of devices detected */
72 cuda_dev_info_ptr_t cuda_dev; /* devices detected in the system (per node) */
73 int ncuda_dev_compatible; /* number of compatible GPUs */
76 /* Hardware information structure with CPU and GPU information.
77 * It is initialized by gmx_detect_hardware().
78 * NOTE: this structure may only contain structures that are globally valid
79 * (i.e. must be able to be shared among all threads) */
82 gmx_gpu_info_t gpu_info; /* Information about GPUs detected in the system */
84 gmx_cpuid_t cpuid_info; /* CPUID information about CPU detected;
85 NOTE: this will only detect the CPU thread 0 of the
86 current process runs on. */
87 int nthreads_hw_avail; /* Number of hardware threads available; this number
88 is based on the number of CPUs reported as available
89 by the OS at the time of detection. */
93 /* The options for the thread affinity setting, default: auto */
95 threadaffSEL, threadaffAUTO, threadaffON, threadaffOFF, threadaffNR
98 /* GPU device selection information -- for now with only CUDA devices */
101 char *gpu_id; /* GPU id's to use, each specified as chars */
102 gmx_bool bUserSet; /* true if the GPUs in cuda_dev_use are manually provided by the user */
104 int ncuda_dev_use; /* number of device (IDs) selected to be used */
105 int *cuda_dev_use; /* device index list providing GPU to PP rank mapping, GPUs can be listed multiple times when ranks share them */
108 /* Threading and GPU options, can be set automatically or by the user */
110 int nthreads_tot; /* Total number of threads requested (TMPI) */
111 int nthreads_tmpi; /* Number of TMPI threads requested */
112 int nthreads_omp; /* Number of OpenMP threads requested */
113 int nthreads_omp_pme; /* As nthreads_omp, but for PME only nodes */
114 int thread_affinity; /* Thread affinity switch, see enum above */
115 int core_pinning_stride; /* Logical core pinning stride */
116 int core_pinning_offset; /* Logical core pinning offset */
118 gmx_gpu_opt_t gpu_opt; /* The GPU options */
125 #endif /* HWINFO_H */