089daaeabc
We're seeing some corner cases with cudart which might be resolved by switching to the driver API which comes bundled with the driver package
71 lines
2.1 KiB
C
71 lines
2.1 KiB
C
#ifndef __APPLE__
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#ifndef __GPU_INFO_NVCUDA_H__
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#define __GPU_INFO_NVCUDA_H__
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#include "gpu_info.h"
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// Just enough typedef's to dlopen/dlsym for memory information
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typedef enum cudaError_enum {
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CUDA_SUCCESS = 0,
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CUDA_ERROR_INVALID_VALUE = 1,
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CUDA_ERROR_MEMORY_ALLOCATION = 2,
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CUDA_ERROR_NOT_INITIALIZED = 3,
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CUDA_ERROR_INSUFFICIENT_DRIVER = 35,
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// Other values omitted for now...
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} CUresult;
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typedef enum CUdevice_attribute_enum {
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CU_DEVICE_ATTRIBUTE_COMPUTE_CAPABILITY_MAJOR = 75,
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CU_DEVICE_ATTRIBUTE_COMPUTE_CAPABILITY_MINOR = 76,
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// TODO - not yet wired up but may be useful for Jetson or other
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// integrated GPU scenarios with shared memory
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CU_DEVICE_ATTRIBUTE_INTEGRATED = 18
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} CUdevice_attribute;
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typedef void *nvcudaDevice_t; // Opaque is sufficient
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typedef struct nvcudaMemory_st {
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uint64_t total;
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uint64_t free;
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} nvcudaMemory_t;
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typedef struct nvcudaDriverVersion {
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int major;
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int minor;
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} nvcudaDriverVersion_t;
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typedef struct CUuuid_st {
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unsigned char bytes[16];
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} CUuuid;
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typedef int CUdevice;
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typedef void* CUcontext;
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typedef struct nvcuda_handle {
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void *handle;
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uint16_t verbose;
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CUresult (*cuInit)(unsigned int Flags);
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CUresult (*cuDriverGetVersion)(int *driverVersion);
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CUresult (*cuDeviceGetCount)(int *);
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CUresult (*cuDeviceGet)(CUdevice* device, int ordinal);
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CUresult (*cuDeviceGetAttribute)(int* pi, CUdevice_attribute attrib, CUdevice dev);
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CUresult (*cuDeviceGetUuid)(CUuuid* uuid, CUdevice dev); // signature compatible with cuDeviceGetUuid_v2
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// Context specific aspects
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CUresult (*cuCtxCreate_v3)(CUcontext* pctx, void *params, int len, unsigned int flags, CUdevice dev);
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CUresult (*cuMemGetInfo_v2)(uint64_t* free, uint64_t* total);
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CUresult (*cuCtxDestroy)(CUcontext ctx);
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} nvcuda_handle_t;
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typedef struct nvcuda_init_resp {
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char *err; // If err is non-null handle is invalid
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nvcuda_handle_t ch;
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int num_devices;
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} nvcuda_init_resp_t;
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void nvcuda_init(char *nvcuda_lib_path, nvcuda_init_resp_t *resp);
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void nvcuda_check_vram(nvcuda_handle_t ch, int device_id, mem_info_t *resp);
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void nvcuda_release(nvcuda_handle_t ch);
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#endif // __GPU_INFO_NVCUDA_H__
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#endif // __APPLE__
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