511 lines
15 KiB
C++
Executable File
511 lines
15 KiB
C++
Executable File
/*
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Copyright (c) 2010-2011, Intel Corporation
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All rights reserved.
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Redistribution and use in source and binary forms, with or without
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modification, are permitted provided that the following conditions are
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met:
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* Redistributions of source code must retain the above copyright
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notice, this list of conditions and the following disclaimer.
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* Redistributions in binary form must reproduce the above copyright
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notice, this list of conditions and the following disclaimer in the
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documentation and/or other materials provided with the distribution.
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* Neither the name of Intel Corporation nor the names of its
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contributors may be used to endorse or promote products derived from
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this software without specific prior written permission.
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THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
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IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
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TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
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PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER
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OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
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EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
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PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
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PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
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LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
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NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
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SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#ifdef _MSC_VER
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#define _CRT_SECURE_NO_WARNINGS
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#define NOMINMAX
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#pragma warning (disable: 4244)
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#pragma warning (disable: 4305)
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#endif
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <assert.h>
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#ifdef __linux__
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#include <malloc.h>
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#endif
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#include <math.h>
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#include <map>
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#include <string>
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#include <algorithm>
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#include <sys/types.h>
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//#include "ao1_ispc.h"
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//using namespace ispc;
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#include "../timing.h"
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#include <sys/time.h>
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static inline double rtc(void)
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{
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struct timeval Tvalue;
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double etime;
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struct timezone dummy;
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gettimeofday(&Tvalue,&dummy);
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etime = (double) Tvalue.tv_sec +
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1.e-6*((double) Tvalue.tv_usec);
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return etime;
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}
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/******************************/
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#include <cassert>
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#include <iostream>
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#include <cuda.h>
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#include "drvapi_error_string.h"
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#define checkCudaErrors(err) __checkCudaErrors (err, __FILE__, __LINE__)
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// These are the inline versions for all of the SDK helper functions
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void __checkCudaErrors(CUresult err, const char *file, const int line) {
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if(CUDA_SUCCESS != err) {
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std::cerr << "checkCudeErrors() Driver API error = " << err << "\""
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<< getCudaDrvErrorString(err) << "\" from file <" << file
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<< ", line " << line << "\n";
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exit(-1);
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}
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}
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/**********************/
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/* Basic CUDriver API */
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CUcontext context;
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void createContext(const int deviceId = 0)
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{
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CUdevice device;
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int devCount;
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checkCudaErrors(cuInit(0));
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checkCudaErrors(cuDeviceGetCount(&devCount));
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assert(devCount > 0);
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checkCudaErrors(cuDeviceGet(&device, deviceId < devCount ? deviceId : 0));
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char name[128];
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checkCudaErrors(cuDeviceGetName(name, 128, device));
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std::cout << "Using CUDA Device [0]: " << name << "\n";
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int devMajor, devMinor;
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checkCudaErrors(cuDeviceComputeCapability(&devMajor, &devMinor, device));
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std::cout << "Device Compute Capability: "
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<< devMajor << "." << devMinor << "\n";
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if (devMajor < 2) {
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std::cerr << "ERROR: Device 0 is not SM 2.0 or greater\n";
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exit(1);
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}
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// Create driver context
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checkCudaErrors(cuCtxCreate(&context, 0, device));
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}
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void destroyContext()
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{
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checkCudaErrors(cuCtxDestroy(context));
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}
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CUmodule loadModule(const char * module)
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{
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const double t0 = rtc();
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CUmodule cudaModule;
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// in this branch we use compilation with parameters
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#if 0
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unsigned int jitNumOptions = 1;
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CUjit_option *jitOptions = new CUjit_option[jitNumOptions];
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void **jitOptVals = new void*[jitNumOptions];
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// set up pointer to set the Maximum # of registers for a particular kernel
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jitOptions[0] = CU_JIT_MAX_REGISTERS;
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int jitRegCount = 64;
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jitOptVals[0] = (void *)(size_t)jitRegCount;
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#if 0
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{
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jitNumOptions = 3;
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// set up size of compilation log buffer
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jitOptions[0] = CU_JIT_INFO_LOG_BUFFER_SIZE_BYTES;
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int jitLogBufferSize = 1024;
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jitOptVals[0] = (void *)(size_t)jitLogBufferSize;
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// set up pointer to the compilation log buffer
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jitOptions[1] = CU_JIT_INFO_LOG_BUFFER;
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char *jitLogBuffer = new char[jitLogBufferSize];
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jitOptVals[1] = jitLogBuffer;
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// set up pointer to set the Maximum # of registers for a particular kernel
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jitOptions[2] = CU_JIT_MAX_REGISTERS;
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int jitRegCount = 32;
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jitOptVals[2] = (void *)(size_t)jitRegCount;
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}
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#endif
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checkCudaErrors(cuModuleLoadDataEx(&cudaModule, module,jitNumOptions, jitOptions, (void **)jitOptVals));
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#else
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CUlinkState CUState;
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CUlinkState *lState = &CUState;
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const int nOptions = 7;
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CUjit_option options[nOptions];
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void* optionVals[nOptions];
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float walltime;
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const unsigned int logSize = 32768;
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char error_log[logSize],
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info_log[logSize];
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void *cuOut;
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size_t outSize;
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int myErr = 0;
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// Setup linker options
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// Return walltime from JIT compilation
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options[0] = CU_JIT_WALL_TIME;
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optionVals[0] = (void*) &walltime;
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// Pass a buffer for info messages
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options[1] = CU_JIT_INFO_LOG_BUFFER;
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optionVals[1] = (void*) info_log;
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// Pass the size of the info buffer
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options[2] = CU_JIT_INFO_LOG_BUFFER_SIZE_BYTES;
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optionVals[2] = (void*) logSize;
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// Pass a buffer for error message
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options[3] = CU_JIT_ERROR_LOG_BUFFER;
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optionVals[3] = (void*) error_log;
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// Pass the size of the error buffer
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options[4] = CU_JIT_ERROR_LOG_BUFFER_SIZE_BYTES;
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optionVals[4] = (void*) logSize;
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// Make the linker verbose
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options[5] = CU_JIT_LOG_VERBOSE;
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optionVals[5] = (void*) 1;
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// Max # of registers/pthread
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options[6] = CU_JIT_MAX_REGISTERS;
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int jitRegCount = 64;
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optionVals[6] = (void *)(size_t)jitRegCount;
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// Create a pending linker invocation
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checkCudaErrors(cuLinkCreate(nOptions,options, optionVals, lState));
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#if 0
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if (sizeof(void *)==4)
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{
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// Load the PTX from the string myPtx32
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printf("Loading myPtx32[] program\n");
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// PTX May also be loaded from file, as per below.
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myErr = cuLinkAddData(*lState, CU_JIT_INPUT_PTX, (void*)myPtx32, strlen(myPtx32)+1, 0, 0, 0, 0);
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}
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else
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#endif
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{
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// Load the PTX from the string myPtx (64-bit)
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fprintf(stderr, "Loading ptx..\n");
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myErr = cuLinkAddData(*lState, CU_JIT_INPUT_PTX, (void*)module, strlen(module)+1, 0, 0, 0, 0);
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myErr = cuLinkAddFile(*lState, CU_JIT_INPUT_LIBRARY, "libcudadevrt.a", 0,0,0);
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// PTX May also be loaded from file, as per below.
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// myErr = cuLinkAddFile(*lState, CU_JIT_INPUT_PTX, "myPtx64.ptx",0,0,0);
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}
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// Complete the linker step
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myErr = cuLinkComplete(*lState, &cuOut, &outSize);
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if ( myErr != CUDA_SUCCESS )
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{
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// Errors will be put in error_log, per CU_JIT_ERROR_LOG_BUFFER option above.
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fprintf(stderr,"PTX Linker Error:\n%s\n",error_log);
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assert(0);
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}
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// Linker walltime and info_log were requested in options above.
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fprintf(stderr, "CUDA Link Completed in %fms [ %g ms]. Linker Output:\n%s\n",walltime,info_log,1e3*(rtc() - t0));
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// Load resulting cuBin into module
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checkCudaErrors(cuModuleLoadData(&cudaModule, cuOut));
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// Destroy the linker invocation
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checkCudaErrors(cuLinkDestroy(*lState));
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#endif
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fprintf(stderr, " loadModule took %g ms \n", 1e3*(rtc() - t0));
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return cudaModule;
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}
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void unloadModule(CUmodule &cudaModule)
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{
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checkCudaErrors(cuModuleUnload(cudaModule));
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}
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CUfunction getFunction(CUmodule &cudaModule, const char * function)
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{
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CUfunction cudaFunction;
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checkCudaErrors(cuModuleGetFunction(&cudaFunction, cudaModule, function));
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return cudaFunction;
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}
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CUdeviceptr deviceMalloc(const size_t size)
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{
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CUdeviceptr d_buf;
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checkCudaErrors(cuMemAllocManaged(&d_buf, size, CU_MEM_ATTACH_GLOBAL));
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return d_buf;
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}
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void deviceFree(CUdeviceptr d_buf)
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{
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checkCudaErrors(cuMemFree(d_buf));
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}
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void memcpyD2H(void * h_buf, CUdeviceptr d_buf, const size_t size)
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{
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checkCudaErrors(cuMemcpyDtoH(h_buf, d_buf, size));
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}
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void memcpyH2D(CUdeviceptr d_buf, void * h_buf, const size_t size)
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{
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checkCudaErrors(cuMemcpyHtoD(d_buf, h_buf, size));
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}
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#define deviceLaunch(func,params) \
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checkCudaErrors(cuFuncSetCacheConfig((func), CU_FUNC_CACHE_PREFER_EQUAL)); \
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checkCudaErrors( \
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cuLaunchKernel( \
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(func), \
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1,1,1, \
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32, 1, 1, \
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0, NULL, (params), NULL \
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));
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typedef CUdeviceptr devicePtr;
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/**************/
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#include <vector>
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std::vector<char> readBinary(const char * filename)
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{
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std::vector<char> buffer;
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FILE *fp = fopen(filename, "rb");
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if (!fp )
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{
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fprintf(stderr, "file %s not found\n", filename);
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assert(0);
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}
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#if 0
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char c;
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while ((c = fgetc(fp)) != EOF)
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buffer.push_back(c);
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#else
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fseek(fp, 0, SEEK_END);
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const unsigned long long size = ftell(fp); /*calc the size needed*/
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fseek(fp, 0, SEEK_SET);
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buffer.resize(size);
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if (fp == NULL){ /*ERROR detection if file == empty*/
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fprintf(stderr, "Error: There was an Error reading the file %s \n",filename);
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exit(1);
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}
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else if (fread(&buffer[0], sizeof(char), size, fp) != size){ /* if count of read bytes != calculated size of .bin file -> ERROR*/
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fprintf(stderr, "Error: There was an Error reading the file %s \n", filename);
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exit(1);
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}
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#endif
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fprintf(stderr, " read buffer of size= %d bytes \n", (int)buffer.size());
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return buffer;
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}
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extern "C"
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{
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void *CUDAAlloc(void **handlePtr, int64_t size, int32_t alignment)
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{
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return NULL;
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}
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double CUDALaunch(
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void **handlePtr,
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const char * func_name,
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void **func_args)
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{
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const std::vector<char> module_str = readBinary("__kernels.ptx");
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const char * module = &module_str[0];
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CUmodule cudaModule = loadModule(module);
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CUfunction cudaFunction = getFunction(cudaModule, func_name);
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const double t0 = rtc();
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deviceLaunch(cudaFunction, func_args);
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checkCudaErrors(cuStreamSynchronize(0));
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const double dt = rtc() - t0;
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unloadModule(cudaModule);
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return dt;
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}
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void CUDASync(void *handle)
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{
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checkCudaErrors(cuStreamSynchronize(0));
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}
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void ISPCSync(void *handle)
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{
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checkCudaErrors(cuStreamSynchronize(0));
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}
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void CUDAFree(void *handle)
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{
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}
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}
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/******************************/
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#define NSUBSAMPLES 2
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extern void ao_serial(int w, int h, int nsubsamples, float image[]);
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static unsigned int test_iterations;
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static unsigned int width, height;
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static unsigned char *img;
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static float *fimg;
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static unsigned char
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clamp(float f)
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{
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int i = (int)(f * 255.5);
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if (i < 0) i = 0;
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if (i > 255) i = 255;
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return (unsigned char)i;
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}
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static void
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savePPM(const char *fname, int w, int h)
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{
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for (int y = 0; y < h; y++) {
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for (int x = 0; x < w; x++) {
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img[3 * (y * w + x) + 0] = clamp(fimg[3 *(y * w + x) + 0]);
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img[3 * (y * w + x) + 1] = clamp(fimg[3 *(y * w + x) + 1]);
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img[3 * (y * w + x) + 2] = clamp(fimg[3 *(y * w + x) + 2]);
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}
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}
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FILE *fp = fopen(fname, "wb");
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if (!fp) {
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perror(fname);
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exit(1);
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}
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fprintf(fp, "P6\n");
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fprintf(fp, "%d %d\n", w, h);
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fprintf(fp, "255\n");
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fwrite(img, w * h * 3, 1, fp);
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fclose(fp);
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printf("Wrote image file %s\n", fname);
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}
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int main(int argc, char **argv)
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{
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if (argc != 4) {
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printf ("%s\n", argv[0]);
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printf ("Usage: ao [num test iterations] [width] [height]\n");
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getchar();
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exit(-1);
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}
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else {
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test_iterations = atoi(argv[1]);
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width = atoi (argv[2]);
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height = atoi (argv[3]);
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}
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// Allocate space for output images
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img = new unsigned char[width * height * 3];
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fimg = new float[width * height * 3];
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//
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// Run the ispc path, test_iterations times, and report the minimum
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// time for any of them.
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//
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double minTimeISPC = 1e30;
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#if 0
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for (unsigned int i = 0; i < test_iterations; i++) {
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memset((void *)fimg, 0, sizeof(float) * width * height * 3);
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assert(NSUBSAMPLES == 2);
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reset_and_start_timer();
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ao_ispc(width, height, NSUBSAMPLES, fimg);
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double t = get_elapsed_mcycles();
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minTimeISPC = std::min(minTimeISPC, t);
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}
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// Report results and save image
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printf("[aobench ispc]:\t\t\t[%.3f] million cycles (%d x %d image)\n",
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minTimeISPC, width, height);
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savePPM("ao-ispc.ppm", width, height);
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#endif
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/*******************/
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createContext();
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/*******************/
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devicePtr d_fimg = deviceMalloc(width*height*3*sizeof(float));
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//
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// Run the ispc + tasks path, test_iterations times, and report the
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// minimum time for any of them.
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//
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double minTimeISPCTasks = 1e30;
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for (unsigned int i = 0; i < test_iterations; i++) {
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memset((void *)fimg, 0, sizeof(float) * width * height * 3);
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assert(NSUBSAMPLES == 2);
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memcpyH2D(d_fimg, fimg, width*height*3*sizeof(float));
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reset_and_start_timer();
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#if 0
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const double t0 = rtc();
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ao_ispc_tasks(
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width,
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height,
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NSUBSAMPLES,
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(float*)d_fimg);
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// double t = (rtc() - t0); //get_elapsed_mcycles();
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#else
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const char * func_name = "ao_ispc_tasks";
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int arg_1 = width;
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int arg_2 = height;
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int arg_3 = NSUBSAMPLES;
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void *func_args[] = {&arg_1, &arg_2, &arg_3, (float*)&d_fimg};
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const double t = CUDALaunch(NULL, func_name, func_args);
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#endif
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minTimeISPCTasks = std::min(minTimeISPCTasks, t);
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}
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memcpyD2H(fimg, d_fimg, width*height*3*sizeof(float));
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// Report results and save image
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printf("[aobench ispc + tasks]:\t\t[%.3f] million cycles (%d x %d image)\n",
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minTimeISPCTasks, width, height);
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savePPM("ao-cuda.ppm", width, height);
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/*******************/
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destroyContext();
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/*******************/
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return 0;
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//
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// Run the serial path, again test_iteration times, and report the
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// minimum time.
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//
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double minTimeSerial = 1e30;
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for (unsigned int i = 0; i < test_iterations; i++) {
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memset((void *)fimg, 0, sizeof(float) * width * height * 3);
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reset_and_start_timer();
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ao_serial(width, height, NSUBSAMPLES, fimg);
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double t = get_elapsed_mcycles();
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minTimeSerial = std::min(minTimeSerial, t);
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}
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// Report more results, save another image...
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printf("[aobench serial]:\t\t[%.3f] million cycles (%d x %d image)\n", minTimeSerial,
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width, height);
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printf("\t\t\t\t(%.2fx speedup from ISPC, %.2fx speedup from ISPC + tasks)\n",
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minTimeSerial / minTimeISPC, minTimeSerial / minTimeISPCTasks);
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savePPM("ao-serial.ppm", width, height);
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|
|
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return 0;
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}
|