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comparison src/gpu/ptx/gpu_ptx.cpp @ 9430:147162b27799

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GRAAL-234 - PTX code loading
author Morris Meyer <morris.meyer@oracle.com>
date Tue, 30 Apr 2013 08:17:55 -0400
parents
children 62838eadbf56
comparison
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9429:aaf8798b0969 9430:147162b27799
1 /*
2 * Copyright (c) 2013, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 *
5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation.
8 *
9 * This code is distributed in the hope that it will be useful, but WITHOUT
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
12 * version 2 for more details (a copy is included in the LICENSE file that
13 * accompanied this code).
14 *
15 * You should have received a copy of the GNU General Public License version
16 * 2 along with this work; if not, write to the Free Software Foundation,
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
18 *
19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
20 * or visit www.oracle.com if you need additional information or have any
21 * questions.
22 *
23 */
24
25
26 #include "runtime/gpu.hpp"
27 #include "utilities/globalDefinitions.hpp"
28 #include "utilities/ostream.hpp"
29
30 void * gpu::Ptx::_device_context;
31
32 gpu::Ptx::cuda_cu_init_func_t gpu::Ptx::_cuda_cu_init;
33 gpu::Ptx::cuda_cu_ctx_create_func_t gpu::Ptx::_cuda_cu_ctx_create;
34 gpu::Ptx::cuda_cu_ctx_detach_func_t gpu::Ptx::_cuda_cu_ctx_detach;
35 gpu::Ptx::cuda_cu_ctx_synchronize_func_t gpu::Ptx::_cuda_cu_ctx_synchronize;
36 gpu::Ptx::cuda_cu_device_get_count_func_t gpu::Ptx::_cuda_cu_device_get_count;
37 gpu::Ptx::cuda_cu_device_get_name_func_t gpu::Ptx::_cuda_cu_device_get_name;
38 gpu::Ptx::cuda_cu_device_get_func_t gpu::Ptx::_cuda_cu_device_get;
39 gpu::Ptx::cuda_cu_device_compute_capability_func_t gpu::Ptx::_cuda_cu_device_compute_capability;
40 gpu::Ptx::cuda_cu_launch_kernel_func_t gpu::Ptx::_cuda_cu_launch_kernel;
41 gpu::Ptx::cuda_cu_module_get_function_func_t gpu::Ptx::_cuda_cu_module_get_function;
42 gpu::Ptx::cuda_cu_module_load_data_ex_func_t gpu::Ptx::_cuda_cu_module_load_data_ex;
43
44 void gpu::probe_linkage() {
45 #ifdef __APPLE__
46 set_gpu_linkage(gpu::Ptx::probe_linkage_apple());
47 #else
48 set_gpu_linkage(false);
49 #endif
50 }
51
52 void gpu::initialize_gpu() {
53 if (gpu::has_gpu_linkage()) {
54 set_initialized(gpu::Ptx::initialize_gpu());
55 }
56 }
57
58 void gpu::generate_kernel(unsigned char *code, int code_len, const char *name) {
59 if (gpu::has_gpu_linkage()) {
60 gpu::Ptx::generate_kernel(code, code_len, name);
61 }
62 }
63
64 #define __CUDA_API_VERSION 5000
65
66 bool gpu::Ptx::initialize_gpu() {
67 int status = _cuda_cu_init(0, __CUDA_API_VERSION);
68 if (TraceWarpLoading) {
69 tty->print_cr("gpu_ptx::_cuda_cu_init: %d", status);
70 }
71
72 int device_count = 0;
73 status = _cuda_cu_device_get_count(&device_count);
74 if (TraceWarpLoading) {
75 tty->print_cr("gpu_ptx::_cuda_cu_device_get_count(%d): %d", device_count, status);
76 }
77
78 int device_id = 0, cu_device = 0;
79 status = _cuda_cu_device_get(&cu_device, device_id);
80 if (TraceWarpLoading) {
81 tty->print_cr("gpu_ptx::_cuda_cu_device_get(%d): %d", cu_device, status);
82 }
83
84 int major, minor;
85 status = _cuda_cu_device_compute_capability(&major, &minor, cu_device);
86 if (TraceWarpLoading) {
87 tty->print_cr("gpu_ptx::_cuda_cu_device_compute_capability(major %d, minor %d): %d",
88 major, minor, status);
89 }
90
91 char device_name[256];
92 status = _cuda_cu_device_get_name(device_name, 256, cu_device);
93 if (TraceWarpLoading) {
94 tty->print_cr("gpu_ptx::_cuda_cu_device_get_name(%s): %d", device_name, status);
95 }
96
97 status = _cuda_cu_ctx_create(&_device_context, 0, cu_device);
98 if (TraceWarpLoading) {
99 tty->print_cr("gpu_ptx::_cuda_cu_ctx_create(%x): %d", _device_context, status);
100 }
101
102 return status == 0; // CUDA_SUCCESS
103 }
104
105 void gpu::Ptx::generate_kernel(unsigned char *code, int code_len, const char *name) {
106
107 void *cu_module;
108 const unsigned int jit_num_options = 3;
109 int *jit_options = new int[jit_num_options];
110 void **jit_option_values = new void *[jit_num_options];
111
112 jit_options[0] = 4; // CU_JIT_INFO_LOG_BUFFER_SIZE_BYTES
113 int jit_log_buffer_size = 1024;
114 jit_option_values[0] = (void *)(size_t)jit_log_buffer_size;
115
116 jit_options[1] = 3; // CU_JIT_INFO_LOG_BUFFER
117 char *jit_log_buffer = new char[jit_log_buffer_size];
118 jit_option_values[1] = jit_log_buffer;
119
120 jit_options[2] = 0; // CU_JIT_MAX_REGISTERS
121 int jit_register_count = 32;
122 jit_option_values[2] = (void *)(size_t)jit_register_count;
123
124 int status = _cuda_cu_module_load_data_ex(&cu_module, code,
125 jit_num_options, jit_options, (void **)jit_option_values);
126 if (TraceWarpLoading) {
127 tty->print_cr("gpu_ptx::_cuda_cu_module_load_data_ex(%x): %d", cu_module, status);
128 tty->print_cr("gpu_ptx::jit_log_buffer\n%s", jit_log_buffer);
129 }
130
131 void *cu_function;
132
133 status = _cuda_cu_module_get_function(&cu_function, cu_module, name);
134 if (TraceWarpLoading) {
135 tty->print_cr("gpu_ptx::_cuda_cu_module_get_function(%s):%x %d", name, cu_function, status);
136 }
137 }
138
139
140 #ifdef __APPLE__
141 bool gpu::Ptx::probe_linkage_apple() {
142 void *handle = dlopen("/usr/local/cuda/lib/libcuda.dylib", RTLD_LAZY);
143 if (handle != NULL) {
144 _cuda_cu_init =
145 CAST_TO_FN_PTR(cuda_cu_init_func_t, dlsym(handle, "cuInit"));
146 _cuda_cu_ctx_create =
147 CAST_TO_FN_PTR(cuda_cu_ctx_create_func_t, dlsym(handle, "cuCtxCreate"));
148 _cuda_cu_ctx_detach =
149 CAST_TO_FN_PTR(cuda_cu_ctx_detach_func_t, dlsym(handle, "cuCtxDetach"));
150 _cuda_cu_ctx_synchronize =
151 CAST_TO_FN_PTR(cuda_cu_ctx_synchronize_func_t, dlsym(handle, "cuCtxSynchronize"));
152 _cuda_cu_device_get_count =
153 CAST_TO_FN_PTR(cuda_cu_device_get_count_func_t, dlsym(handle, "cuDeviceGetCount"));
154 _cuda_cu_device_get_name =
155 CAST_TO_FN_PTR(cuda_cu_device_get_name_func_t, dlsym(handle, "cuDeviceGetName"));
156 _cuda_cu_device_get =
157 CAST_TO_FN_PTR(cuda_cu_device_get_func_t, dlsym(handle, "cuDeviceGet"));
158 _cuda_cu_device_compute_capability =
159 CAST_TO_FN_PTR(cuda_cu_device_compute_capability_func_t, dlsym(handle, "cuDeviceComputeCapability"));
160 _cuda_cu_module_get_function =
161 CAST_TO_FN_PTR(cuda_cu_module_get_function_func_t, dlsym(handle, "cuModuleGetFunction"));
162 _cuda_cu_module_load_data_ex =
163 CAST_TO_FN_PTR(cuda_cu_module_load_data_ex_func_t, dlsym(handle, "cuModuleLoadDataEx"));
164 return true;
165 }
166 return false;
167 }
168 #endif