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35 #ifndef GMX_GPU_UTILS_GPUTRAITS_OCL_H
36 #define GMX_GPU_UTILS_GPUTRAITS_OCL_H
38 /*! \libinternal \file
39 * \brief Declares the OpenCL type traits.
41 * \author Aleksei Iupinov <a.yupinov@gmail.com>
42 * \author Artem Zhmurov <zhmurov@gmail.com>
45 * \ingroup module_gpu_utils
48 #include "gromacs/gpu_utils/gmxopencl.h"
50 //! OpenCL device vendors
51 enum class DeviceVendor : int
53 Unknown = 0, //!< No data
54 Nvidia = 1, //!< NVIDIA
55 Amd = 2, //!< Advanced Micro Devices
61 * \brief OpenCL device information.
63 * The OpenCL device information is queried and set at detection and contains
64 * both information about the device/hardware returned by the runtime as well
65 * as additional data like support status.
67 struct DeviceInformation
69 cl_platform_id oclPlatformId; //!< OpenCL Platform ID.
70 cl_device_id oclDeviceId; //!< OpenCL Device ID.
71 char device_name[256]; //!< Device name.
72 char device_version[256]; //!< Device version.
73 char vendorName[256]; //!< Device vendor name.
74 int compute_units; //!< Number of compute units.
75 int adress_bits; //!< Number of address bits the device is capable of.
76 int stat; //!< Device status takes values of e_gpu_detect_res_t.
77 DeviceVendor deviceVendor; //!< Device vendor.
78 size_t maxWorkItemSizes[3]; //!< Workgroup size limits (CL_DEVICE_MAX_WORK_ITEM_SIZES).
79 size_t maxWorkGroupSize; //!< Workgroup total size limit (CL_DEVICE_MAX_WORK_GROUP_SIZE).
82 //! \brief Single GPU call timing event
83 using CommandEvent = cl_event;
86 * GPU kernels scheduling description. This is same in OpenCL/CUDA.
87 * Provides reasonable defaults, one typically only needs to set the GPU stream
88 * and non-1 work sizes.
90 struct KernelLaunchConfig
92 //! Work groups (CUDA blocks) counts
93 size_t gridSize[3] = { 1, 1, 1 };
94 //! Per work group (CUDA block) thread counts
95 size_t blockSize[3] = { 1, 1, 1 };
96 //! Shared memory size in bytes
97 size_t sharedMemorySize = 0;
100 /*! \brief Sets whether device code can use arrays that are embedded in structs.
101 * Note that OpenCL 2.x might be able to do this, but we use 1.2.
103 #define c_canEmbedBuffers false