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96 lines
2.6 KiB
96 lines
2.6 KiB
#include <iostream>
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#include "../Common.h"
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#include "Tests.h"
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#include <random>
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Histogram::Histogram(bool _global, int _valueSet, int _data_size)
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{
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global = _global;
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valueSet = _valueSet;
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data_size = _data_size;
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std::random_device rd;
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std::mt19937 gen(rd());
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std::uniform_int_distribution<int> distr(0, valueSet-1);
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for (size_t index = 0; index < data_size; ++index) {
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sourceData.push_back(distr(gen));
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}
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gpuResult.resize(valueSet, 0);
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}
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void Histogram::collect_results(cl::CommandQueue* queue)
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{
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queue->enqueueReadBuffer(clResultBuffer, true, 0, sizeof(int) * valueSet, gpuResult.data());
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}
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void Histogram::gpu_compute(cl::Context* context, cl::CommandQueue* queue, cl::Program* program, cl::Event* Event)
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{
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cl_int err = CL_SUCCESS;
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// Get the kernel handle
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cl::Kernel kernel;
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if (global) {
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kernel = cl::Kernel(*program, "histogram_global", &err);
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}
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else {
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kernel = cl::Kernel(*program, "histogram_local", &err);
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}
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CheckCLError(err);
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clInputBuffer = cl::Buffer(*context, CL_MEM_READ_ONLY, sizeof(int) * data_size, NULL, &err);
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queue->enqueueWriteBuffer(clInputBuffer,
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true, // Blocking!
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0, sizeof(int) * data_size, sourceData.data());
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CheckCLError(err);
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// Allocate the output data
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clResultBuffer = cl::Buffer(*context, CL_MEM_WRITE_ONLY, sizeof(int) * valueSet, NULL, &err);
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CheckCLError(err);
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// Set the kernel parameters
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kernel.setArg(0, clInputBuffer); // kernel FV paraméterei sorrendben
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kernel.setArg(1, clResultBuffer);
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if (!global) {
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kernel.setArg(2, sizeof(int) * valueSet, NULL);
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kernel.setArg(3, valueSet);
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}
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// Enqueue the kernel
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queue->enqueueNDRangeKernel(kernel,
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cl::NullRange, // Indexek nem eloffszetelve
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cl::NDRange(data_size, 1), // Minden elemet egy szál
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cl::NullRange, // Workgroup méret? - ez az auto, ha nem indul, 1024-re, onnan csökkent, amig elindul
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NULL, //
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Event);
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}
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void Histogram::cpu_compute()
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{
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cpuResult.resize(0, 0);
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cpuResult.resize(valueSet, 0);
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for (size_t index = 0; index < data_size; ++index) {
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cpuResult[sourceData[index]] = cpuResult[sourceData[index]] + 1;
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}
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}
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bool Histogram::validate_results()
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{
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for (size_t index = 0; index < valueSet; index++) {
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if (cpuResult[index] != gpuResult[index]) {
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std::cout << "Wrong result at [" << index << "]: " << gpuResult[index] << "!=" << cpuResult[index] << std::endl;
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return false;
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}
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}
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return true;
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}
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std::string Histogram::description()
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{
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std::string type;
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if (global) {
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type = "gobal";
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}
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else {
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type = "local";
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}
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return std::string("Histogram (type=" + type +",data_size=" + std::to_string(data_size) + ",valueSet=" + std::to_string(valueSet) + ")");
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}
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