src/gromacs/gpu_utils/gputraits_ocl.h

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  35 #ifndef GMX_GPU_UTILS_GPUTRAITS_OCL_H
  36 #define GMX_GPU_UTILS_GPUTRAITS_OCL_H
  37
  38 /*! \libinternal \file
  39  *  \brief Declares the OpenCL type traits.
  40  *
  41  *  \author Aleksei Iupinov <a.yupinov@gmail.com>
  42  *  \author Artem Zhmurov <zhmurov@gmail.com>
  43  *
  44  * \inlibraryapi
  45  * \ingroup module_gpu_utils
  46  */
  47
  48 #include "gromacs/gpu_utils/gmxopencl.h"
  49 #include "gromacs/hardware/gpu_hw_info.h"
  50
  51 using DeviceTexture = void*;
  52
  53 //! OpenCL device vendors
  54 enum class DeviceVendor : int
  55 {
  56     Unknown = 0, //!< No data
  57     Nvidia  = 1, //!< NVIDIA
  58     Amd     = 2, //!< Advanced Micro Devices
  59     Intel   = 3, //!< Intel
  60     Count   = 4
  61 };
  62
  63 /*! \internal
  64  * \brief OpenCL device information.
  65  *
  66  * The OpenCL device information is queried and set at detection and contains
  67  * both information about the device/hardware returned by the runtime as well
  68  * as additional data like support status.
  69  */
  70 struct DeviceInformation
  71 {
  72     cl_platform_id oclPlatformId;       //!< OpenCL Platform ID.
  73     cl_device_id   oclDeviceId;         //!< OpenCL Device ID.
  74     char           device_name[256];    //!< Device name.
  75     char           device_version[256]; //!< Device version.
  76     char           vendorName[256];     //!< Device vendor name.
  77     int            compute_units;       //!< Number of compute units.
  78     int            adress_bits;         //!< Number of address bits the device is capable of.
  79     DeviceStatus   stat;                //!< Device status.
  80     DeviceVendor   deviceVendor;        //!< Device vendor.
  81     size_t         maxWorkItemSizes[3]; //!< Workgroup size limits (CL_DEVICE_MAX_WORK_ITEM_SIZES).
  82     size_t maxWorkGroupSize; //!< Workgroup total size limit (CL_DEVICE_MAX_WORK_GROUP_SIZE).
  83 };
  84
  85 //! \brief Single GPU call timing event
  86 using CommandEvent = cl_event;
  87
  88 /*! \internal \brief
  89  * GPU kernels scheduling description. This is same in OpenCL/CUDA.
  90  * Provides reasonable defaults, one typically only needs to set the GPU stream
  91  * and non-1 work sizes.
  92  */
  93 struct KernelLaunchConfig
  94 {
  95     //! Work groups (CUDA blocks) counts
  96     size_t gridSize[3] = { 1, 1, 1 };
  97     //! Per work group (CUDA block) thread counts
  98     size_t blockSize[3] = { 1, 1, 1 };
  99     //! Shared memory size in bytes
 100     size_t sharedMemorySize = 0;
 101 };
 102
 103 /*! \brief Sets whether device code can use arrays that are embedded in structs.
 104  * Note that OpenCL 2.x might be able to do this, but we use 1.2.
 105  */
 106 #define c_canEmbedBuffers false
 107
 108 #endif