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#include <stdexcept>
#include <cublas_v2.h>
#define STR_HELPER(x) #x
#define STR(x) STR_HELPER(x)
#ifdef _WIN32
# include <windows.h>
# define CUBLAS_LIBNAME "cublas64_" STR(CUBLAS_VER_MAJOR) ".dll"
#else
# include <dlfcn.h>
# define CUBLAS_LIBNAME "libcublas.so." STR(CUBLAS_VER_MAJOR)
#endif
#include <spdlog/spdlog.h>
#include "env.h"
namespace ctranslate2 {
template <typename Signature>
static Signature load_symbol(void* handle, const char* name, const char* library_name) {
#ifdef _WIN32
void* symbol = reinterpret_cast<void*>(GetProcAddress(static_cast<HMODULE>(handle), name));
#else
void* symbol = dlsym(handle, name);
#endif
if (!symbol)
throw std::runtime_error("Cannot load symbol " + std::string(name)
+ " from library " + std::string(library_name));
return reinterpret_cast<Signature>(symbol);
}
static inline void log_cublas_version(void* handle) {
using Signature = cublasStatus_t(*)(libraryPropertyType, int*);
const auto cublas_get_property = load_symbol<Signature>(handle,
"cublasGetProperty",
CUBLAS_LIBNAME);
int major_version = 0;
int minor_version = 0;
int patch_level = 0;
cublas_get_property(MAJOR_VERSION, &major_version);
cublas_get_property(MINOR_VERSION, &minor_version);
cublas_get_property(PATCH_LEVEL, &patch_level);
spdlog::info("Loaded cuBLAS library version {}.{}.{}",
major_version, minor_version, patch_level);
}
static void* get_so_handle() {
static auto so_handle = []() {
#ifdef _WIN32
std::string cuda_path = read_string_from_env("CUDA_PATH");
if (!cuda_path.empty()) {
cuda_path += "\\bin";
SetDllDirectoryA(cuda_path.c_str());
}
void* handle = static_cast<void*>(LoadLibraryA(CUBLAS_LIBNAME));
#else
void* handle = dlopen(CUBLAS_LIBNAME, RTLD_LAZY);
#endif
if (!handle)
throw std::runtime_error("Library " + std::string(CUBLAS_LIBNAME)
+ " is not found or cannot be loaded");
log_cublas_version(handle);
return handle;
}();
return so_handle;
}
template <typename Signature>
static Signature load_symbol(const char* name) {
void* handle = get_so_handle();
return load_symbol<Signature>(handle, name, CUBLAS_LIBNAME);
}
}
// TODO: these stub functions could be automatically generated.
extern "C" {
cublasStatus_t cublasCreate_v2(cublasHandle_t *handle) {
using Signature = cublasStatus_t(*)(cublasHandle_t*);
static auto func = ctranslate2::load_symbol<Signature>("cublasCreate_v2");
return func(handle);
}
cublasStatus_t cublasDestroy_v2(cublasHandle_t handle) {
using Signature = cublasStatus_t(*)(cublasHandle_t);
static auto func = ctranslate2::load_symbol<Signature>("cublasDestroy_v2");
return func(handle);
}
cublasStatus_t cublasSetStream_v2(cublasHandle_t handle, cudaStream_t stream) {
using Signature = cublasStatus_t(*)(cublasHandle_t, cudaStream_t);
static auto func = ctranslate2::load_symbol<Signature>("cublasSetStream_v2");
return func(handle, stream);
}
cublasStatus_t cublasGetMathMode(cublasHandle_t handle, cublasMath_t *mode) {
using Signature = cublasStatus_t(*)(cublasHandle_t, cublasMath_t*);
static auto func = ctranslate2::load_symbol<Signature>("cublasGetMathMode");
return func(handle, mode);
}
cublasStatus_t cublasSgemm_v2(cublasHandle_t handle,
cublasOperation_t transa,
cublasOperation_t transb,
int m,
int n,
int k,
const float *alpha,
const float *A,
int lda,
const float *B,
int ldb,
const float *beta,
float *C,
int ldc) {
using Signature = cublasStatus_t(*)(cublasHandle_t,
cublasOperation_t,
cublasOperation_t,
int,
int,
int,
const float*,
const float*,
int,
const float*,
int,
const float*,
float*,
int);
static auto func = ctranslate2::load_symbol<Signature>("cublasSgemm_v2");
return func(handle, transa, transb, m, n, k, alpha, A, lda, B, ldb, beta, C, ldc);
}
cublasStatus_t cublasSgemmStridedBatched(cublasHandle_t handle,
cublasOperation_t transa,
cublasOperation_t transb,
int m,
int n,
int k,
const float *alpha,
const float *A,
int lda,
long long int strideA,
const float *B,
int ldb,
long long int strideB,
const float *beta,
float *C,
int ldc,
long long int strideC,
int batchCount) {
using Signature = cublasStatus_t(*)(cublasHandle_t,
cublasOperation_t,
cublasOperation_t,
int,
int,
int,
const float*,
const float*,
int,
long long int,
const float*,
int,
long long int,
const float*,
float*,
int,
long long int,
int);
static auto func = ctranslate2::load_symbol<Signature>("cublasSgemmStridedBatched");
return func(handle, transa, transb, m, n, k, alpha, A, lda, strideA, B, ldb, strideB, beta, C, ldc, strideC, batchCount);
}
cublasStatus_t cublasGemmEx(cublasHandle_t handle,
cublasOperation_t transa,
cublasOperation_t transb,
int m,
int n,
int k,
const void *alpha,
const void *A,
cudaDataType Atype,
int lda,
const void *B,
cudaDataType Btype,
int ldb,
const void *beta,
void *C,
cudaDataType Ctype,
int ldc,
cublasComputeType_t computeType,
cublasGemmAlgo_t algo) {
using Signature = cublasStatus_t(*)(cublasHandle_t,
cublasOperation_t,
cublasOperation_t,
int,
int,
int,
const void*,
const void*,
cudaDataType,
int,
const void*,
cudaDataType,
int,
const void*,
void*,
cudaDataType,
int,
cublasComputeType_t,
cublasGemmAlgo_t);
static auto func = ctranslate2::load_symbol<Signature>("cublasGemmEx");
return func(handle, transa, transb, m, n, k, alpha, A, Atype, lda, B, Btype, ldb, beta, C, Ctype, ldc, computeType, algo);
}
cublasStatus_t cublasGemmStridedBatchedEx(cublasHandle_t handle,
cublasOperation_t transa,
cublasOperation_t transb,
int m,
int n,
int k,
const void *alpha,
const void *A,
cudaDataType Atype,
int lda,
long long int strideA,
const void *B,
cudaDataType Btype,
int ldb,
long long int strideB,
const void *beta,
void *C,
cudaDataType Ctype,
int ldc,
long long int strideC,
int batchCount,
cublasComputeType_t computeType,
cublasGemmAlgo_t algo) {
using Signature = cublasStatus_t(*)(cublasHandle_t,
cublasOperation_t,
cublasOperation_t,
int,
int,
int,
const void*,
const void*,
cudaDataType,
int,
long long int,
const void*,
cudaDataType,
int,
long long int,
const void*,
void*,
cudaDataType,
int,
long long int,
int,
cublasComputeType_t,
cublasGemmAlgo_t);
static auto func = ctranslate2::load_symbol<Signature>("cublasGemmStridedBatchedEx");
return func(handle, transa, transb, m, n, k, alpha, A, Atype, lda, strideA, B, Btype, ldb, strideB, beta, C, Ctype, ldc, strideC, batchCount, computeType, algo);
}
}