Mercurial > hg > graal-compiler
view src/gpu/ptx/vm/gpu_ptx.cpp @ 11463:93c63975217e
Make ComputeProbabilityClosure more robust to probabilities that to infinity because of loops
author | Gilles Duboscq <duboscq@ssw.jku.at> |
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date | Thu, 29 Aug 2013 19:09:09 +0200 |
parents | d876002b98e6 |
children | 49bb1bc983c6 |
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/* * Copyright (c) 2013, Oracle and/or its affiliates. All rights reserved. * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. * * This code is free software; you can redistribute it and/or modify it * under the terms of the GNU General Public License version 2 only, as * published by the Free Software Foundation. * * This code is distributed in the hope that it will be useful, but WITHOUT * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License * version 2 for more details (a copy is included in the LICENSE file that * accompanied this code). * * You should have received a copy of the GNU General Public License version * 2 along with this work; if not, write to the Free Software Foundation, * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. * * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA * or visit www.oracle.com if you need additional information or have any * questions. * */ #include "precompiled.hpp" #include "runtime/javaCalls.hpp" #include "runtime/gpu.hpp" #include "utilities/globalDefinitions.hpp" #include "utilities/ostream.hpp" #include "memory/allocation.hpp" #include "memory/allocation.inline.hpp" void * gpu::Ptx::_device_context; gpu::Ptx::cuda_cu_init_func_t gpu::Ptx::_cuda_cu_init; gpu::Ptx::cuda_cu_ctx_create_func_t gpu::Ptx::_cuda_cu_ctx_create; gpu::Ptx::cuda_cu_ctx_detach_func_t gpu::Ptx::_cuda_cu_ctx_detach; gpu::Ptx::cuda_cu_ctx_synchronize_func_t gpu::Ptx::_cuda_cu_ctx_synchronize; gpu::Ptx::cuda_cu_device_get_count_func_t gpu::Ptx::_cuda_cu_device_get_count; gpu::Ptx::cuda_cu_device_get_name_func_t gpu::Ptx::_cuda_cu_device_get_name; gpu::Ptx::cuda_cu_device_get_func_t gpu::Ptx::_cuda_cu_device_get; gpu::Ptx::cuda_cu_device_compute_capability_func_t gpu::Ptx::_cuda_cu_device_compute_capability; gpu::Ptx::cuda_cu_device_get_attribute_func_t gpu::Ptx::_cuda_cu_device_get_attribute; gpu::Ptx::cuda_cu_launch_kernel_func_t gpu::Ptx::_cuda_cu_launch_kernel; gpu::Ptx::cuda_cu_module_get_function_func_t gpu::Ptx::_cuda_cu_module_get_function; gpu::Ptx::cuda_cu_module_load_data_ex_func_t gpu::Ptx::_cuda_cu_module_load_data_ex; void gpu::probe_linkage() { #if defined(__APPLE__) || defined(LINUX) set_gpu_linkage(gpu::Ptx::probe_linkage()); #else set_gpu_linkage(false); #endif } void gpu::initialize_gpu() { if (gpu::has_gpu_linkage()) { set_initialized(gpu::Ptx::initialize_gpu()); } } void * gpu::generate_kernel(unsigned char *code, int code_len, const char *name) { if (gpu::has_gpu_linkage()) { return (gpu::Ptx::generate_kernel(code, code_len, name)); } else { return NULL; } } bool gpu::execute_kernel(address kernel, JavaCallArguments * jca) { if (gpu::has_gpu_linkage()) { return (gpu::Ptx::execute_kernel(kernel, jca)); } else { return false; } } bool gpu::Ptx::initialize_gpu() { /* Initialize CUDA driver API */ int status = _cuda_cu_init(0); if (status != GRAAL_CUDA_SUCCESS) { tty->print_cr("Failed to initialize CUDA device"); return false; } if (TraceGPUInteraction) { tty->print_cr("CUDA driver initialization: Success"); } /* Get the number of compute-capable device count */ int device_count = 0; status = _cuda_cu_device_get_count(&device_count); if (status != GRAAL_CUDA_SUCCESS) { tty->print_cr("[CUDA] Failed to get compute-capable device count"); return false; } if (device_count == 0) { tty->print_cr("[CUDA] Found no device supporting CUDA"); return false; } if (TraceGPUInteraction) { tty->print_cr("[CUDA] Number of compute-capable devices found: %d", device_count); } /* Get the handle to the first compute device */ int device_id = 0; /* Compute-capable device handle */ int cu_device = 0; status = _cuda_cu_device_get(&cu_device, device_id); if (status != GRAAL_CUDA_SUCCESS) { tty->print_cr("[CUDA] Failed to get handle of first compute-capable device i.e., the one at ordinal: %d", device_id); return false; } if (TraceGPUInteraction) { tty->print_cr("[CUDA] Got the handle of first compute-device"); } /* Get device attributes */ int minor, major, unified_addressing; status = _cuda_cu_device_get_attribute(&minor, GRAAL_CU_DEVICE_ATTRIBUTE_COMPUTE_CAPABILITY_MINOR, cu_device); if (status != GRAAL_CUDA_SUCCESS) { tty->print_cr("[CUDA] Failed to get minor attribute of device: %d", cu_device); return false; } status = _cuda_cu_device_get_attribute(&major, GRAAL_CU_DEVICE_ATTRIBUTE_COMPUTE_CAPABILITY_MAJOR, cu_device); if (status != GRAAL_CUDA_SUCCESS) { tty->print_cr("[CUDA] Failed to get major attribute of device: %d", cu_device); return false; } if (TraceGPUInteraction) { tty->print_cr("[CUDA] Compatibility version of device %d: %d.%d", cu_device, major, minor); } status = _cuda_cu_device_get_attribute(&unified_addressing, GRAAL_CU_DEVICE_ATTRIBUTE_UNIFIED_ADDRESSING, cu_device); if (status != GRAAL_CUDA_SUCCESS) { tty->print_cr("[CUDA] Failed to query unified addressing mode of device: %d", cu_device); return false; } if (TraceGPUInteraction) { tty->print_cr("[CUDA] Unified addressing support on device %d: %d", cu_device, unified_addressing); } /* Get device name */ char device_name[256]; status = _cuda_cu_device_get_name(device_name, 256, cu_device); if (status != GRAAL_CUDA_SUCCESS) { tty->print_cr("[CUDA] Failed to get name of device: %d", cu_device); return false; } if (TraceGPUInteraction) { tty->print_cr("[CUDA] Using %s", device_name); } /* Create CUDA context */ status = _cuda_cu_ctx_create(&_device_context, 0, cu_device); if (status != GRAAL_CUDA_SUCCESS) { tty->print_cr("[CUDA] Failed to create CUDA context for device: %d", cu_device); return false; } if (TraceGPUInteraction) { tty->print_cr("[CUDA] Success: Created context for device: %d", cu_device); } return true; } void *gpu::Ptx::generate_kernel(unsigned char *code, int code_len, const char *name) { struct CUmod_st * cu_module; // Use three JIT compiler options const unsigned int jit_num_options = 3; int *jit_options = NEW_C_HEAP_ARRAY(int, jit_num_options, mtCompiler); void **jit_option_values = NEW_C_HEAP_ARRAY(void *, jit_num_options, mtCompiler); // Set up PTX JIT compiler options // 1. set size of compilation log buffer int jit_log_buffer_size = 1024; jit_options[0] = GRAAL_CU_JIT_INFO_LOG_BUFFER_SIZE_BYTES; jit_option_values[0] = (void *)(size_t)jit_log_buffer_size; // 2. set pointer to compilation log buffer char *jit_log_buffer = NEW_C_HEAP_ARRAY(char, jit_log_buffer_size, mtCompiler); jit_options[1] = GRAAL_CU_JIT_INFO_LOG_BUFFER; jit_option_values[1] = jit_log_buffer; // 3. set pointer to set the Maximum # of registers (32) for the kernel int jit_register_count = 32; jit_options[2] = GRAAL_CU_JIT_MAX_REGISTERS; jit_option_values[2] = (void *)(size_t)jit_register_count; if (TraceGPUInteraction) { tty->print_cr("[CUDA] PTX Kernel\n%s", code); tty->print_cr("[CUDA] Function name : %s", name); } /* Load module's data with compiler options */ int status = _cuda_cu_module_load_data_ex(&cu_module, code, jit_num_options, jit_options, (void **)jit_option_values); if (status != GRAAL_CUDA_SUCCESS) { if (status == GRAAL_CUDA_ERROR_NO_BINARY_FOR_GPU) { tty->print_cr("[CUDA] Check for malformed PTX kernel or incorrect PTX compilation options"); } tty->print_cr("[CUDA] *** Error (%d) Failed to load module data with online compiler options for method %s", status, name); return NULL; } if (TraceGPUInteraction) { tty->print_cr("[CUDA] Loaded data for PTX Kernel"); } struct CUfunc_st * cu_function; status = _cuda_cu_module_get_function(&cu_function, cu_module, name); if (status != GRAAL_CUDA_SUCCESS) { tty->print_cr("[CUDA] *** Error: Failed to get function %s", name); return NULL; } if (TraceGPUInteraction) { tty->print_cr("[CUDA] Got function handle for %s", name); } return cu_function; } bool gpu::Ptx::execute_kernel(address kernel, JavaCallArguments * jca) { // grid dimensionality unsigned int gridX = 1; unsigned int gridY = 1; unsigned int gridZ = 1; // thread dimensionality unsigned int blockX = 1; unsigned int blockY = 1; unsigned int blockZ = 1; int *cu_function = (int *)kernel; char * paramBuffer = (char *) jca->parameters(); size_t paramBufferSz = (size_t) jca->size_of_parameters(); void * config[] = { GRAAL_CU_LAUNCH_PARAM_BUFFER_POINTER, paramBuffer, GRAAL_CU_LAUNCH_PARAM_BUFFER_SIZE, ¶mBufferSz, GRAAL_CU_LAUNCH_PARAM_END }; if (kernel == NULL) { return false; } if (TraceGPUInteraction) { tty->print_cr("[CUDA] launching kernel"); } int status = _cuda_cu_launch_kernel(cu_function, gridX, gridY, gridZ, blockX, blockY, blockZ, 0, NULL, NULL, config); if (status != GRAAL_CUDA_SUCCESS) { tty->print_cr("[CUDA] Failed to launch kernel"); return false; } if (TraceGPUInteraction) { tty->print_cr("[CUDA] Success: Kernel Launch"); } return status == 0; // GRAAL_CUDA_SUCCESS } #if defined(LINUX) static const char cuda_library_name[] = "libcuda.so"; #elif defined(__APPLE__) static char const cuda_library_name[] = "/usr/local/cuda/lib/libcuda.dylib"; #else static char const cuda_library_name[] = ""; #endif #define STD_BUFFER_SIZE 1024 bool gpu::Ptx::probe_linkage() { if (cuda_library_name != NULL) { char *buffer = (char*)malloc(STD_BUFFER_SIZE); void *handle = os::dll_load(cuda_library_name, buffer, STD_BUFFER_SIZE); free(buffer); if (handle != NULL) { _cuda_cu_init = CAST_TO_FN_PTR(cuda_cu_init_func_t, os::dll_lookup(handle, "cuInit")); _cuda_cu_ctx_create = CAST_TO_FN_PTR(cuda_cu_ctx_create_func_t, os::dll_lookup(handle, "cuCtxCreate")); _cuda_cu_ctx_detach = CAST_TO_FN_PTR(cuda_cu_ctx_detach_func_t, os::dll_lookup(handle, "cuCtxDetach")); _cuda_cu_ctx_synchronize = CAST_TO_FN_PTR(cuda_cu_ctx_synchronize_func_t, os::dll_lookup(handle, "cuCtxSynchronize")); _cuda_cu_device_get_count = CAST_TO_FN_PTR(cuda_cu_device_get_count_func_t, os::dll_lookup(handle, "cuDeviceGetCount")); _cuda_cu_device_get_name = CAST_TO_FN_PTR(cuda_cu_device_get_name_func_t, os::dll_lookup(handle, "cuDeviceGetName")); _cuda_cu_device_get = CAST_TO_FN_PTR(cuda_cu_device_get_func_t, os::dll_lookup(handle, "cuDeviceGet")); _cuda_cu_device_compute_capability = CAST_TO_FN_PTR(cuda_cu_device_compute_capability_func_t, os::dll_lookup(handle, "cuDeviceComputeCapability")); _cuda_cu_device_get_attribute = CAST_TO_FN_PTR(cuda_cu_device_get_attribute_func_t, os::dll_lookup(handle, "cuDeviceGetAttribute")); _cuda_cu_module_get_function = CAST_TO_FN_PTR(cuda_cu_module_get_function_func_t, os::dll_lookup(handle, "cuModuleGetFunction")); _cuda_cu_module_load_data_ex = CAST_TO_FN_PTR(cuda_cu_module_load_data_ex_func_t, os::dll_lookup(handle, "cuModuleLoadDataEx")); _cuda_cu_launch_kernel = CAST_TO_FN_PTR(cuda_cu_launch_kernel_func_t, os::dll_lookup(handle, "cuLaunchKernel")); if (TraceGPUInteraction) { tty->print_cr("[CUDA] Success: library linkage"); } return true; } else { // Unable to dlopen libcuda return false; } } else { tty->print_cr("Unsupported CUDA platform"); return false; } tty->print_cr("Failed to find CUDA linkage"); return false; }