Revert "protyping the idea that supports running on CPU for a GGML_USE_CUBLAS=on build"

This reverts commit b5149aa.

Author: wsxiaoys

ggml-cuda.cu

@@ -5724,11 +5724,6 @@ static void ggml_cuda_pool_free(void * ptr, size_t size) {
     CUDA_CHECK(cudaFree(ptr));
 }
 
-static bool g_cublas_loaded = false;
-
-bool ggml_cublas_loaded(void) {
-    return g_cublas_loaded;
-}
 
 void ggml_init_cublas() {
     static bool initialized = false;
@@ -5742,12 +5737,7 @@ void ggml_init_cublas() {
         CUDA_CHECK(cudaDeviceSynchronize());
 #endif
 
-        if (cudaGetDeviceCount(&g_device_count) != cudaSuccess) {
-            initialized = true;
-            g_cublas_loaded = false;
-            return;
-        }
-
+        CUDA_CHECK(cudaGetDeviceCount(&g_device_count));
         GGML_ASSERT(g_device_count <= GGML_CUDA_MAX_DEVICES);
         int64_t total_vram = 0;
 #if defined(GGML_CUDA_FORCE_MMQ)
@@ -5795,7 +5785,6 @@ void ggml_init_cublas() {
         // CUBLAS_CHECK(cublasLoggerConfigure(1, 1, 0, nullptr));
 
         initialized = true;
-        g_cublas_loaded = true;
     }
 }
 
@@ -7070,8 +7059,6 @@ static void ggml_cuda_rms_norm(const ggml_tensor * src0, const ggml_tensor * src
 }
 
 bool ggml_cuda_can_mul_mat(const struct ggml_tensor * src0, const struct ggml_tensor * src1, struct ggml_tensor * dst) {
-    if (!g_cublas_loaded) return false;
-
     const int64_t ne10 = src1->ne[0];
 
     const int64_t ne0 = dst->ne[0];
@@ -7735,8 +7722,6 @@ void ggml_cuda_free_scratch() {
 }
 
 bool ggml_cuda_compute_forward(struct ggml_compute_params * params, struct ggml_tensor * tensor) {
-    if (!g_cublas_loaded) return false;
-
     ggml_cuda_func_t func;
     const bool any_on_device = tensor->backend == GGML_BACKEND_GPU
         || (tensor->src[0] != nullptr && (tensor->src[0]->backend == GGML_BACKEND_GPU || tensor->src[0]->backend == GGML_BACKEND_GPU_SPLIT))

ggml-cuda.h

@@ -18,8 +18,6 @@ extern "C" {
 #define GGML_CUDA_MAX_DEVICES       16
 
 GGML_API void   ggml_init_cublas(void);
-GGML_API bool   ggml_cublas_loaded(void);
-
 GGML_API void * ggml_cuda_host_malloc(size_t size);
 GGML_API void   ggml_cuda_host_free(void * ptr);