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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 //! Whether \ref DeviceInformation can be serialized for sending via MPI.
68 static constexpr bool c_canSerializeDeviceInformation =
69 (!GMX_GPU_OPENCL && !GMX_GPU_SYCL); /*NOLINT(misc-redundant-expression)*/
71 //! Possible results of the GPU detection/check.
72 enum class DeviceStatus : int
74 //! The device is compatible
76 //! Device does not exist
78 //! Device is not compatible
80 //! OpenCL device has incompatible cluster size for non-bonded kernels.
81 IncompatibleClusterSize = 3,
82 //! There are known issues with OpenCL on NVIDIA Volta and newer.
83 IncompatibleNvidiaVolta = 4,
84 /*! \brief The device originates from non-recommended SYCL backend.
85 * The device might work by itself, but to simplify device allocation, it is marked as incompatible.
87 NotPreferredBackend = 5,
88 /*! \brief An error occurred during the functionality checks.
89 * That indicates malfunctioning of the device, driver, or incompatible driver/runtime.
92 /*! \brief CUDA devices are busy or unavailable.
93 * typically due to use of \p cudaComputeModeExclusive, \p cudaComputeModeProhibited modes.
100 /*! \brief Names of the GPU detection/check results
102 * Check-source wants to warn about the use of a symbol name that would
103 * require an inclusion of config.h. However the use is in a comment, so that
104 * is a false warning. So C-style string concatenation is used to fool the
105 * naive parser in check-source. That needs a clang-format suppression
106 * in order to look reasonable. Also clang-tidy wants to suggest that a comma is
107 * missing, so that is suppressed.
109 static const gmx::EnumerationArray<DeviceStatus, const char*> c_deviceStateString = {
114 // NOLINTNEXTLINE(bugprone-suspicious-missing-comma)
115 "incompatible (please recompile with correct GMX" "_GPU_NB_CLUSTER_SIZE of 4)",
117 "incompatible (please use CUDA build for NVIDIA Volta GPUs or newer)",
118 "not recommended (please use SYCL_DEVICE_FILTER to limit visibility to a single backend)",
124 enum class DeviceVendor : int
130 //! Advanced Micro Devices
139 /*! \libinternal \brief Platform-dependent device information.
141 * The device information is queried and set at detection and contains
142 * both information about the device/hardware returned by the runtime as well
143 * as additional data like support status.
145 struct DeviceInformation
149 //! ID of the device.
152 DeviceVendor deviceVendor;
154 //! CUDA device properties.
157 cl_platform_id oclPlatformId; //!< OpenCL Platform ID.
158 cl_device_id oclDeviceId; //!< OpenCL Device ID.
159 char device_name[256]; //!< Device name.
160 char device_version[256]; //!< Device version.
161 char vendorName[256]; //!< Device vendor name.
162 int compute_units; //!< Number of compute units.
163 int adress_bits; //!< Number of address bits the device is capable of.
164 size_t maxWorkItemSizes[3]; //!< Workgroup size limits (CL_DEVICE_MAX_WORK_ITEM_SIZES).
165 size_t maxWorkGroupSize; //!< Workgroup total size limit (CL_DEVICE_MAX_WORK_GROUP_SIZE).
167 cl::sycl::device syclDevice;
171 #endif // GMX_HARDWARE_DEVICE_INFORMATION_H