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annotate src/share/vm/runtime/gpu.cpp @ 11822:365d8f385fb5

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PTX: one-dimensional parallel warp invocation, ParallelOver annotation
author Morris Meyer <morris.meyer@oracle.com>
date Sun, 29 Sep 2013 14:47:12 -0400
parents 103795ab699d
children 8d8f63069f58
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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 #include "precompiled.hpp"
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26 #include "runtime/gpu.hpp"
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27
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28 bool gpu::_available = false; // does the hardware exist?
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29 bool gpu::_gpu_linkage = false; // is the driver library to access the GPU installed
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30 bool gpu::_initialized = false; // is the GPU device initialized
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31 gpu::TargetGPUIL gpu::_targetIL = gpu::NONE; // No GPU detected yet.
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32
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33 void gpu::init() {
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34 #if defined(TARGET_OS_FAMILY_bsd) || defined(TARGET_OS_FAMILY_linux)
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35 gpu::probe_gpu();
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36 if (gpu::get_target_il_type() == gpu::PTX) {
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37 set_gpu_linkage(gpu::Ptx::probe_linkage());
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38 } else {
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39 set_gpu_linkage(false);
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40 }
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41 #endif
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42 }
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43
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44 void gpu::initialize_gpu() {
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45 if (gpu::has_gpu_linkage()) {
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46 if (gpu::get_target_il_type() == gpu::PTX) {
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47 set_initialized(gpu::Ptx::initialize_gpu());
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48 }
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49 // Add initialization of other GPUs here
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50 }
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51 }
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52
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53 void * gpu::generate_kernel(unsigned char *code, int code_len, const char *name) {
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54 if (gpu::has_gpu_linkage()) {
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55 if (gpu::get_target_il_type() == gpu::PTX) {
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56 return (gpu::Ptx::generate_kernel(code, code_len, name));
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57 }
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58 // Add kernel generation functionality of other GPUs here
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59 }
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60 return NULL;
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61 }
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62
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63 bool gpu::execute_kernel(address kernel, PTXKernelArguments & ptxka, JavaValue& ret) {
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64 if (gpu::has_gpu_linkage()) {
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65 if (gpu::get_target_il_type() == gpu::PTX) {
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66 return (gpu::Ptx::execute_kernel(kernel, ptxka, ret));
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67 }
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68 // Add kernel execution functionality of other GPUs here
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69 }
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70 return false;
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71 }
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72
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73 bool gpu::execute_warp(int dimX, int dimY, int dimZ,
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74 address kernel, PTXKernelArguments & ptxka, JavaValue& ret) {
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75 if (gpu::has_gpu_linkage()) {
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76 if (gpu::get_target_il_type() == gpu::PTX) {
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77 return (gpu::Ptx::execute_warp(dimX, dimY, dimZ, kernel, ptxka, ret));
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78 }
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79 // Add kernel execution functionality of other GPUs here
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80 }
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81 return false;
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82 }
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83