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36 /*! \libinternal \file
37 * \brief Declares the GPU information structure and its helpers
39 * \author Anca Hamuraru <anca@streamcomputing.eu>
40 * \author Dimitrios Karkoulis <dimitris.karkoulis@gmail.com>
41 * \author Teemu Virolainen <teemu@streamcomputing.eu>
42 * \author Mark Abraham <mark.j.abraham@gmail.com>
43 * \author Szilárd Páll <pall.szilard@gmail.com>
44 * \author Artem Zhmurov <zhmurov@gmail.com>
46 #ifndef GMX_HARDWARE_DEVICE_INFORMATION_H
47 #define GMX_HARDWARE_DEVICE_INFORMATION_H
52 # include <cuda_runtime.h>
56 # include "gromacs/gpu_utils/gmxopencl.h"
60 # include "gromacs/gpu_utils/gmxsycl.h"
63 #include "gromacs/utility/enumerationhelpers.h"
65 //! Constant used to help minimize preprocessed code
66 static constexpr bool c_binarySupportsGpus = (GMX_GPU != 0);
67 static constexpr bool c_canSerializeDeviceInformation =
68 (!GMX_GPU_OPENCL && !GMX_GPU_SYCL); /*NOLINT(misc-redundant-expression)*/
70 //! Possible results of the GPU detection/check.
71 enum class DeviceStatus : int
73 //! The device is compatible
75 //! Device does not exist
77 //! Device is not compatible
79 //! OpenCL device has incompatible cluster size for non-bonded kernels.
80 IncompatibleClusterSize = 3,
81 //! There are known issues with OpenCL on NVIDIA Volta and newer.
82 IncompatibleNvidiaVolta = 4,
83 /*! \brief The device originates from non-recommended SYCL backend.
84 * The device might work by itself, but to simplify device allocation, it is marked as incompatible.
86 NotPreferredBackend = 5,
87 /*! \brief An error occurred during the functionality checks.
88 * That indicates malfunctioning of the device, driver, or incompatible driver/runtime.
91 /*! \brief CUDA devices are busy or unavailable.
92 * typically due to use of \p cudaComputeModeExclusive, \p cudaComputeModeProhibited modes.
99 /*! \brief Names of the GPU detection/check results
101 * Check-source wants to warn about the use of a symbol name that would
102 * require an inclusion of config.h. However the use is in a comment, so that
103 * is a false warning. So C-style string concatenation is used to fool the
104 * naive parser in check-source. That needs a clang-format suppression
105 * in order to look reasonable. Also clang-tidy wants to suggest that a comma is
106 * missing, so that is suppressed.
108 static const gmx::EnumerationArray<DeviceStatus, const char*> c_deviceStateString = {
113 // NOLINTNEXTLINE(bugprone-suspicious-missing-comma)
114 "incompatible (please recompile with correct GMX" "_GPU_NB_CLUSTER_SIZE of 4)",
116 "incompatible (please use CUDA build for NVIDIA Volta GPUs or newer)",
117 "not recommended (please use SYCL_DEVICE_FILTER to limit visibility to a single backend)",
123 enum class DeviceVendor : int
129 //! Advanced Micro Devices
138 /*! \libinternal \brief Platform-dependent device information.
140 * The device information is queried and set at detection and contains
141 * both information about the device/hardware returned by the runtime as well
142 * as additional data like support status.
144 struct DeviceInformation
148 //! ID of the device.
151 DeviceVendor deviceVendor;
153 //! CUDA device properties.
156 cl_platform_id oclPlatformId; //!< OpenCL Platform ID.
157 cl_device_id oclDeviceId; //!< OpenCL Device ID.
158 char device_name[256]; //!< Device name.
159 char device_version[256]; //!< Device version.
160 char vendorName[256]; //!< Device vendor name.
161 int compute_units; //!< Number of compute units.
162 int adress_bits; //!< Number of address bits the device is capable of.
163 size_t maxWorkItemSizes[3]; //!< Workgroup size limits (CL_DEVICE_MAX_WORK_ITEM_SIZES).
164 size_t maxWorkGroupSize; //!< Workgroup total size limit (CL_DEVICE_MAX_WORK_GROUP_SIZE).
166 cl::sycl::device syclDevice;
170 #endif // GMX_HARDWARE_DEVICE_INFORMATION_H