codekingpro/portable-devtools

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48
49/*!
50* \file cudalibxt.h  
51* \brief Public header file for the NVIDIA library multi-GPU support structures  
52*/ 
53
54#ifndef _CUDA_LIB_XT_H_
55#define _CUDA_LIB_XT_H_
56#include <cuda_runtime.h>
57
58#define CUDA_XT_DESCRIPTOR_VERSION 0x01000000 // This is added to CUDART_VERSION
59
60enum cudaXtCopyType_t {
61    LIB_XT_COPY_HOST_TO_DEVICE,
62    LIB_XT_COPY_DEVICE_TO_HOST,
63    LIB_XT_COPY_DEVICE_TO_DEVICE
64} ;
65typedef enum cudaXtCopyType_t cudaLibXtCopyType;
66
67enum libFormat_t {
68    LIB_FORMAT_CUFFT        = 0x0,
69    LIB_FORMAT_UNDEFINED    = 0x1
70};
71
72typedef enum libFormat_t libFormat;
73
74#define MAX_CUDA_DESCRIPTOR_GPUS 64
75
76struct cudaXtDesc_t{
77    int version;                             //descriptor version
78    int nGPUs;                               //number of GPUs 
79    int GPUs[MAX_CUDA_DESCRIPTOR_GPUS];      //array of device IDs
80    void *data[MAX_CUDA_DESCRIPTOR_GPUS];    //array of pointers to data, one per GPU
81    size_t size[MAX_CUDA_DESCRIPTOR_GPUS];   //array of data sizes, one per GPU
82    void *cudaXtState;                       //opaque CUDA utility structure
83};
84typedef struct cudaXtDesc_t cudaXtDesc;
85
86struct cudaLibXtDesc_t{
87    int version;                //descriptor version
88    cudaXtDesc *descriptor;     //multi-GPU memory descriptor
89    libFormat library;          //which library recognizes the format
90    int subFormat;              //library specific enumerator of sub formats
91    void *libDescriptor;        //library specific descriptor e.g. FFT transform plan object
92};
93typedef struct cudaLibXtDesc_t cudaLibXtDesc;
94
95
96#endif
97
98