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annotate src/gpu/ptx/vm/gpu_ptx.hpp @ 11842:8d8f63069f58

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PTX warp limiter to available GPU processors
author Morris Meyer <morris.meyer@oracle.com>
date Mon, 30 Sep 2013 13:03:47 -0400
parents 365d8f385fb5
children c7abc8411011
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1 /*
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2 * Copyright (c) 2013, Oracle and/or its affiliates. All rights reserved.
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3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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4 *
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5 * This code is free software; you can redistribute it and/or modify it
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6 * under the terms of the GNU General Public License version 2 only, as
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7 * published by the Free Software Foundation.
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8 *
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9 * This code is distributed in the hope that it will be useful, but WITHOUT
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10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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12 * version 2 for more details (a copy is included in the LICENSE file that
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13 * accompanied this code).
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14 *
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15 * You should have received a copy of the GNU General Public License version
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16 * 2 along with this work; if not, write to the Free Software Foundation,
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17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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18 *
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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20 * or visit www.oracle.com if you need additional information or have any
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21 * questions.
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22 *
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23 */
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24
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25 #ifndef GPU_PTX_HPP
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26 #define GPU_PTX_HPP
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27
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28 /*
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29 * Some useful macro definitions from publicly available cuda.h.
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30 * These definitions are for convenience.
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31 */
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32 #define GRAAL_CUDA_SUCCESS 0
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33 /**< Device shares a unified address space with the host */
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34 #define GRAAL_CU_DEVICE_ATTRIBUTE_UNIFIED_ADDRESSING 41
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35 #define GRAAL_CU_DEVICE_ATTRIBUTE_COMPUTE_CAPABILITY_MAJOR 75
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36 #define GRAAL_CU_DEVICE_ATTRIBUTE_COMPUTE_CAPABILITY_MINOR 76
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37 #define GRAAL_CU_DEVICE_ATTRIBUTE_MULTIPROCESSOR_COUNT 16
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38 #define GRAAL_CU_JIT_MAX_REGISTERS 0
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39 #define GRAAL_CU_JIT_THREADS_PER_BLOCK 1
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40 #define GRAAL_CU_JIT_INFO_LOG_BUFFER 3
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41 #define GRAAL_CU_JIT_INFO_LOG_BUFFER_SIZE_BYTES 4
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42 #define GRAAL_CUDA_ERROR_NO_BINARY_FOR_GPU 209
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43
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44 /**
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45 * End of array terminator for the extra parameter to
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46 * ::cuLaunchKernel
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47 */
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48 #define GRAAL_CU_LAUNCH_PARAM_END ((void*) 0x00)
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49
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50 /**
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51 * Indicator that the next value in the extra parameter to
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52 * ::cuLaunchKernel will be a pointer to a buffer containing all kernel
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53 * parameters used for launching kernel f. This buffer needs to
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54 * honor all alignment/padding requirements of the individual parameters.
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55 * If ::GRAAL_CU_LAUNCH_PARAM_BUFFER_SIZE is not also specified in the
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56 * extra array, then ::GRAAL_CU_LAUNCH_PARAM_BUFFER_POINTER will have no
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57 * effect.
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58 */
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59 #define GRAAL_CU_LAUNCH_PARAM_BUFFER_POINTER ((void*) 0x01)
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60
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61 /**
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62 * Indicator that the next value in the extra parameter to
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63 * ::cuLaunchKernel will be a pointer to a size_t which contains the
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64 * size of the buffer specified with ::GRAAL_CU_LAUNCH_PARAM_BUFFER_POINTER.
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65 * It is required that ::GRAAL_CU_LAUNCH_PARAM_BUFFER_POINTER also be specified
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66 * in the extra array if the value associated with
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67 * ::GRAAL_CU_LAUNCH_PARAM_BUFFER_SIZE is not zero.
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68 */
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69 #define GRAAL_CU_LAUNCH_PARAM_BUFFER_SIZE ((void*) 0x02)
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70
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71 class Ptx {
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72 friend class gpu;
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73
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74 protected:
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75 static bool probe_linkage();
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76 static bool initialize_gpu();
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77 static unsigned int total_cores();
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78 static void * generate_kernel(unsigned char *code, int code_len, const char *name);
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79 static bool execute_warp(int dimX, int dimY, int dimZ, address kernel, PTXKernelArguments & ka, JavaValue &ret);
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80 static bool execute_kernel(address kernel, PTXKernelArguments & ka, JavaValue &ret);
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81 public:
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82 #if defined(__x86_64) || defined(AMD64) || defined(_M_AMD64)
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83 typedef unsigned long long CUdeviceptr;
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84 #else
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85 typedef unsigned int CUdeviceptr;
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86 #endif
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87
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88 private:
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89 typedef int (*cuda_cu_init_func_t)(unsigned int);
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90 typedef int (*cuda_cu_ctx_create_func_t)(void*, int, int);
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91 typedef int (*cuda_cu_ctx_destroy_func_t)(void*);
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92 typedef int (*cuda_cu_ctx_synchronize_func_t)(void);
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93 typedef int (*cuda_cu_ctx_set_current_func_t)(void*);
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94 typedef int (*cuda_cu_device_get_count_func_t)(int*);
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95 typedef int (*cuda_cu_device_get_name_func_t)(char*, int, int);
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96 typedef int (*cuda_cu_device_get_func_t)(int*, int);
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97 typedef int (*cuda_cu_device_compute_capability_func_t)(int*, int*, int);
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98 typedef int (*cuda_cu_device_get_attribute_func_t)(int*, int, int);
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99 typedef int (*cuda_cu_launch_kernel_func_t)(struct CUfunc_st*,
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100 unsigned int, unsigned int, unsigned int,
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101 unsigned int, unsigned int, unsigned int,
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102 unsigned int, void*, void**, void**);
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103 typedef int (*cuda_cu_module_get_function_func_t)(void*, void*, const char*);
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104 typedef int (*cuda_cu_module_load_data_ex_func_t)(void*, void*, unsigned int, void*, void**);
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105 typedef int (*cuda_cu_memalloc_func_t)(void*, size_t);
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106 typedef int (*cuda_cu_memfree_func_t)(gpu::Ptx::CUdeviceptr);
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107 typedef int (*cuda_cu_memcpy_htod_func_t)(gpu::Ptx::CUdeviceptr, const void*, unsigned int);
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108 typedef int (*cuda_cu_memcpy_dtoh_func_t)(const void*, gpu::Ptx::CUdeviceptr, unsigned int);
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109
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110 public:
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111 static cuda_cu_init_func_t _cuda_cu_init;
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112 static cuda_cu_ctx_create_func_t _cuda_cu_ctx_create;
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113 static cuda_cu_ctx_destroy_func_t _cuda_cu_ctx_destroy;
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114 static cuda_cu_ctx_synchronize_func_t _cuda_cu_ctx_synchronize;
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115 static cuda_cu_device_get_count_func_t _cuda_cu_device_get_count;
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116 static cuda_cu_device_get_name_func_t _cuda_cu_device_get_name;
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117 static cuda_cu_device_get_func_t _cuda_cu_device_get;
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118 static cuda_cu_device_compute_capability_func_t _cuda_cu_device_compute_capability; /* Deprecated as of CUDA 5.0 */
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119 static cuda_cu_device_get_attribute_func_t _cuda_cu_device_get_attribute;
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120 static cuda_cu_launch_kernel_func_t _cuda_cu_launch_kernel;
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121 static cuda_cu_module_get_function_func_t _cuda_cu_module_get_function;
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122 static cuda_cu_module_load_data_ex_func_t _cuda_cu_module_load_data_ex;
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123 static cuda_cu_memalloc_func_t _cuda_cu_memalloc;
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124 static cuda_cu_memfree_func_t _cuda_cu_memfree;
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125 static cuda_cu_memcpy_htod_func_t _cuda_cu_memcpy_htod;
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126 static cuda_cu_memcpy_dtoh_func_t _cuda_cu_memcpy_dtoh;
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127 static cuda_cu_ctx_set_current_func_t _cuda_cu_ctx_set_current;
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128
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129 protected:
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130 static void* _device_context;
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131 static int _cu_device;
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132 };
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133 #endif // GPU_PTX_HPP