CLBlast support

CMakeLists.txt

@@ -67,6 +67,7 @@ endif()
 option(LLAMA_ACCELERATE             "llama: enable Accelerate framework"                    ON)
 option(LLAMA_OPENBLAS               "llama: use OpenBLAS"                                   OFF)
 option(LLAMA_CUBLAS                 "llama: use cuBLAS"                                     OFF)
+option(LLAMA_CLBLAST                "llama: use CLBlast"                                    OFF)
 
 option(LLAMA_BUILD_TESTS            "llama: build tests"    ${LLAMA_STANDALONE})
 option(LLAMA_BUILD_EXAMPLES         "llama: build examples" ${LLAMA_STANDALONE})
@@ -168,6 +169,21 @@ if (LLAMA_CUBLAS)
     endif()
 endif()
 
+if (LLAMA_CLBLAST)
+    find_package(CLBlast)
+    if (CLBlast_FOUND)
+        message(STATUS "CLBlast found")
+
+        set(GGML_OPENCL_SOURCES ggml-opencl.cpp ggml-opencl.h)
+
+        add_compile_definitions(GGML_USE_CLBLAST)
+
+        set(LLAMA_EXTRA_LIBS ${LLAMA_EXTRA_LIBS} clblast)
+    else()
+        message(WARNING "CLBlast not found")
+    endif()
+endif()
+
 if (LLAMA_ALL_WARNINGS)
     if (NOT MSVC)
         set(c_flags
@@ -307,7 +323,8 @@ endif()
 add_library(ggml OBJECT
             ggml.c
             ggml.h
-            ${GGML_CUDA_SOURCES})
+            ${GGML_CUDA_SOURCES}
+            ${GGML_OPENCL_SOURCES})
 
 target_include_directories(ggml PUBLIC .)
 target_compile_features(ggml PUBLIC c_std_11) # don't bump

Makefile

@@ -105,14 +105,21 @@ ifdef LLAMA_OPENBLAS
 	LDFLAGS += -lopenblas
 endif
 ifdef LLAMA_CUBLAS
-	CFLAGS    += -DGGML_USE_CUBLAS -I/usr/local/cuda/include
-	LDFLAGS   += -lcublas -lculibos -lcudart -lcublasLt -lpthread -ldl -lrt -L/usr/local/cuda/lib64
+	CFLAGS    += -DGGML_USE_CUBLAS -I/usr/local/cuda/include -I/opt/cuda/include
+	LDFLAGS   += -lcublas -lculibos -lcudart -lcublasLt -lpthread -ldl -lrt -L/usr/local/cuda/lib64 -L/opt/cuda/lib64
 	OBJS      += ggml-cuda.o
 	NVCC      = nvcc
 	NVCCFLAGS = --forward-unknown-to-host-compiler -arch=native
 ggml-cuda.o: ggml-cuda.cu ggml-cuda.h
 	$(NVCC) $(NVCCFLAGS) $(CXXFLAGS) -Wno-pedantic -c $< -o $@
 endif
+ifdef LLAMA_CLBLAST
+	CFLAGS  += -DGGML_USE_CLBLAST
+	LDFLAGS += -lclblast -lOpenCL
+	OBJS    += ggml-opencl.o
+ggml-opencl.o: ggml-opencl.cpp ggml-opencl.h
+	$(CXX) $(CXXFLAGS) -c $< -o $@
+endif
 ifdef LLAMA_GPROF
 	CFLAGS   += -pg
 	CXXFLAGS += -pg

ggml-opencl.cpp

@@ -0,0 +1,203 @@
+#include "ggml-opencl.h"
+
+#include <atomic>
+#include <cstdio>
+#include <cstring>
+
+#include "ggml.h"
+
+#include <ggml_clblast_dequant.cl>
+
+cl_platform_id platform;
+cl_device_id device;
+cl_context context;
+cl_command_queue queue;
+cl_program program;
+cl_kernel kernel_q4_0, kernel_q4_1, kernel_q4_2, kernel_q4_3;
+cl_mem cl_buffer_a, cl_buffer_qb, cl_buffer_b, cl_buffer_c;
+size_t cl_size_a = 0, cl_size_qb = 0, cl_size_b = 0, cl_size_c = 0;
+
+cl_program build_program_from_source(cl_context ctx, cl_device_id dev, const char* program_buffer) {
+   cl_program program;
+   char *program_log;
+   size_t program_size, log_size;
+   int err;
+
+   program_size = strlen(program_buffer);
+
+   program = clCreateProgramWithSource(ctx, 1,
+      (const char**)&program_buffer, &program_size, &err);
+   if(err < 0) {
+      fprintf(stderr, "OpenCL error creating program");
+      exit(1);
+   }
+
+   err = clBuildProgram(program, 0, NULL, NULL, NULL, NULL);
+   if(err < 0) {
+
+      clGetProgramBuildInfo(program, dev, CL_PROGRAM_BUILD_LOG,
+            0, NULL, &log_size);
+      program_log = (char*) malloc(log_size + 1);
+      program_log[log_size] = '\0';
+      clGetProgramBuildInfo(program, dev, CL_PROGRAM_BUILD_LOG,
+            log_size + 1, program_log, NULL);
+      printf("%s\n", program_log);
+      free(program_log);
+      exit(1);
+   }
+
+   return program;
+}
+
+void ggml_cl_init(void) {
+    cl_int err = 0;
+    char * GGML_CLBLAST_PLATFORM = getenv("GGML_CLBLAST_PLATFORM");
+    char * GGML_CLBLAST_DEVICE = getenv("GGML_CLBLAST_DEVICE");
+    int plat_num = (GGML_CLBLAST_PLATFORM == NULL ? 0 : atoi(GGML_CLBLAST_PLATFORM));
+    int dev_num = (GGML_CLBLAST_DEVICE == NULL ? 0 : atoi(GGML_CLBLAST_DEVICE));
+    printf("\nInitializing CLBlast (First Run)...");
+    printf("\nAttempting to use: Platform=%d, Device=%d (If invalid, program will crash)\n",plat_num,dev_num);
+    cl_uint num_platforms;
+    clGetPlatformIDs(0, NULL, &num_platforms);
+    cl_platform_id* platforms = (cl_platform_id*)malloc(num_platforms*sizeof(cl_platform_id));
+    clGetPlatformIDs(num_platforms, platforms, NULL);
+    platform = platforms[plat_num];
+    char platform_buffer[1024];
+    clGetPlatformInfo(platform, CL_PLATFORM_NAME, sizeof(platform_buffer), &platform_buffer, NULL);
+    cl_uint num_devices;
+    clGetDeviceIDs(platform, CL_DEVICE_TYPE_ALL, 0, NULL, &num_devices);
+    cl_device_id* devices = (cl_device_id*)malloc(num_devices*sizeof(cl_device_id));
+    clGetDeviceIDs(platform, CL_DEVICE_TYPE_ALL, num_devices, devices, NULL);
+    device = devices[dev_num];
+    char device_buffer[1024];
+    clGetDeviceInfo(device, CL_DEVICE_NAME, sizeof(device_buffer), &device_buffer, NULL);
+    printf("Using Platform: %s Device: %s\n", platform_buffer, device_buffer);
+    context = clCreateContext(NULL, 1, &device, NULL, NULL, &err);
+    CL_CHECK(err, "clCreateContext");
+    queue = clCreateCommandQueue(context, device, 0, &err);
+    CL_CHECK(err, "clCreateCommandQueue");
+
+    free(platforms);
+    free(devices);
+
+    program = build_program_from_source(context, device, clblast_dequant);
+
+    // Prepare dequantize kernels
+    kernel_q4_0 = clCreateKernel(program, "dequantize_row_q4_0", &err);
+    CL_CHECK(err, "clCreateKernel");
+    kernel_q4_1 = clCreateKernel(program, "dequantize_row_q4_1", &err);
+    CL_CHECK(err, "clCreateKernel");
+    kernel_q4_2 = clCreateKernel(program, "dequantize_row_q4_2", &err);
+    CL_CHECK(err, "clCreateKernel");
+    kernel_q4_3 = clCreateKernel(program, "dequantize_row_q4_3", &err);
+    CL_CHECK(err, "clCreateKernel");
+}
+
+void ggml_cl_malloc(size_t req_size, size_t* cur_size, cl_mem_flags flags, cl_mem* buf) {
+    if (req_size <= *cur_size) {
+        return;
+    }
+
+    // Reallocate buffer with enough space
+    if (*cur_size > 0) {
+        clReleaseMemObject(*buf);
+    }
+    cl_int err;
+    *buf = clCreateBuffer(context, flags, req_size, NULL, &err);
+    *cur_size = req_size;
+    CL_CHECK(err, "clCreateBuffer");
+}
+
+void ggml_cl_sgemm_wrapper(const CLBlastLayout order, const CLBlastTranspose trans_a, const CLBlastTranspose trans_b, const int m, const int n, const int k, const float alpha, const void *host_a, const int lda, const float *host_b, const int ldb, const float beta, float *host_c, const int ldc, const int btype) {
+    cl_int err = 0;
+
+    cl_event events[4] = { NULL };
+
+    cl_kernel kernel;
+    size_t global = n * k, local, size_qb;
+    bool dequant;
+
+    switch (btype) {
+    case GGML_TYPE_F32:
+        dequant = false;
+        break;
+    case GGML_TYPE_Q4_0:
+        dequant = true;
+        kernel = kernel_q4_0;
+        local = 16;
+        size_qb = global * (sizeof(float) + local) / 32;
+        break;
+    case GGML_TYPE_Q4_1:
+        dequant = true;
+        kernel = kernel_q4_1;
+        local = 16;
+        size_qb = global * (sizeof(float) * 2 + local) / 32;
+        break;
+    case GGML_TYPE_Q4_2:
+        dequant = true;
+        kernel = kernel_q4_2;
+        local = 8;
+        size_qb = global * (sizeof(short) + local) / 16;
+        break;
+    case GGML_TYPE_Q4_3:
+        dequant = true;
+        kernel = kernel_q4_3;
+        local = 8;
+        size_qb = global * (sizeof(short) * 2 + local) / 16;
+        break;
+    default:
+        fprintf(stderr, "Error: Unsupported OpenCL btype %d\n", btype);
+        abort();
+    }
+
+    const size_t size_a =  m * k * sizeof(float);
+    const size_t size_b =  n * k * sizeof(float);
+    const size_t size_c =  m * n * sizeof(float);
+
+    // Prepare buffers
+    ggml_cl_malloc(size_a, &cl_size_a, CL_MEM_READ_ONLY, &cl_buffer_a);
+    if (dequant) {
+        ggml_cl_malloc(size_qb, &cl_size_qb, CL_MEM_READ_ONLY, &cl_buffer_qb);
+    }
+    ggml_cl_malloc(size_b, &cl_size_b, CL_MEM_READ_WRITE, &cl_buffer_b);
+    ggml_cl_malloc(size_c, &cl_size_c, CL_MEM_WRITE_ONLY, &cl_buffer_c);
+
+    if (dequant) {
+        err = clSetKernelArg(kernel, 0, sizeof(cl_mem), &cl_buffer_qb);
+        err |= clSetKernelArg(kernel, 1, sizeof(cl_mem), &cl_buffer_b);
+        CL_CHECK(err, "clSetKernelArg");
+        clEnqueueWriteBuffer(queue, cl_buffer_qb, CL_FALSE, 0, size_qb, host_b, 0, NULL, events + 1);
+    } else {
+        clEnqueueWriteBuffer(queue, cl_buffer_b, CL_FALSE, 0, size_b, host_b, 0, NULL, events + 1);
+    }
+
+    clEnqueueWriteBuffer(queue, cl_buffer_a, CL_FALSE, 0, size_a, host_a, 0, NULL, events);
+    if (dequant) {
+        err = clEnqueueNDRangeKernel(queue, kernel, 1, NULL, &global, &local, 1, events + 1, events + 3);
+        CL_CHECK(err, "clEnqueueNDRangeKernel");
+    }
+    clWaitForEvents(dequant ? 4 : 3, events);
+    clReleaseEvent(events[0]);
+    clReleaseEvent(events[1]);
+    clReleaseEvent(events[2]);
+    if (dequant) {
+        clReleaseEvent(events[3]);
+    }
+
+    CLBlastSgemm(order,
+                 trans_a, trans_b,
+                 m, n, k,
+                 alpha,
+                 cl_buffer_a, 0, lda,
+                 cl_buffer_b, 0, ldb,
+                 beta,
+                 cl_buffer_c, 0, ldc,
+                 &queue, events);
+
+    clEnqueueReadBuffer(queue, cl_buffer_c, CL_TRUE, 0, size_c, host_c, 1, events, events + 1);
+
+    // Wait for completion
+    clWaitForEvents(2, events);
+    clReleaseEvent(events[0]);
+    clReleaseEvent(events[1]);
+}

ggml-opencl.h

@@ -0,0 +1,31 @@
+#pragma once
+
+#define CL_TARGET_OPENCL_VERSION 110
+#include <clblast_c.h>
+#define MAX_CL_BUFFERS 16
+
+#ifdef  __cplusplus
+extern "C" {
+#endif
+
+// Buffer reuse code adapted from cuda implementation by slaren
+#define CL_CHECK(err, name)                                                           \
+    do {                                                                                \
+        cl_int err_ = (err);                                                       \
+        if (err_ != CL_SUCCESS) {                                                      \
+            fprintf(stderr, "OpenCL %s error %d at %s:%d\n", name, err_, __FILE__, __LINE__);   \
+            exit(1);                                                                    \
+        }                                                                               \
+    } while (0)
+
+cl_mem ggml_cl_pool_malloc(size_t size, size_t * actual_size);
+void ggml_cl_pool_free(cl_mem mem, size_t size);
+
+cl_program build_program_from_source(cl_context ctx, cl_device_id dev, const char* program_buffer);
+void ggml_cl_init(void);
+
+void ggml_cl_sgemm_wrapper(const CLBlastLayout order, const CLBlastTranspose trans_a, const CLBlastTranspose trans_b, const int m, const int n, const int k, const float alpha, const void *host_a, const int lda, const float *host_b, const int ldb, const float beta, float *host_c, const int ldc, const int btype);
+
+#ifdef  __cplusplus
+}
+#endif