--- /dev/null
+/******************************************************************************\r
+*\r
+* Copyright (c) 2019 Intel.\r
+*\r
+* Licensed under the Apache License, Version 2.0 (the "License");\r
+* you may not use this file except in compliance with the License.\r
+* You may obtain a copy of the License at\r
+*\r
+* http://www.apache.org/licenses/LICENSE-2.0\r
+*\r
+* Unless required by applicable law or agreed to in writing, software\r
+* distributed under the License is distributed on an "AS IS" BASIS,\r
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\r
+* See the License for the specific language governing permissions and\r
+* limitations under the License.\r
+*\r
+*******************************************************************************/\r
+\r
+\r
+#include <cmath>\r
+#include <fstream>\r
+#include <numeric>\r
+\r
+#ifndef _WIN64\r
+#include <unistd.h>\r
+#include <sys/syscall.h>\r
+#else\r
+#include <Windows.h>\r
+#endif\r
+\r
+#include "common.hpp"\r
+\r
+#ifndef CPU_ID\r
+#define CPU_ID 4\r
+#endif\r
+\r
+/* Required to avoid linker errors */\r
+json KernelTests::conf;\r
+std::string KernelTests::test_type;\r
+unsigned long KernelTests::tsc;\r
+\r
+\r
+long BenchmarkParameters::repetition = 40;\r
+long BenchmarkParameters::loop = 30;\r
+unsigned BenchmarkParameters::cpu_id = CPU_ID;\r
+\r
+int bind_to_cpu(const unsigned cpu)\r
+{\r
+#ifndef _WIN64\r
+ const auto pid = syscall(SYS_gettid);\r
+ cpu_set_t mask {};\r
+ CPU_ZERO(&mask);\r
+ CPU_SET(cpu, &mask);\r
+ return sched_setaffinity(__pid_t(pid), sizeof(mask), &mask);\r
+#else\r
+ return -1;\r
+#endif\r
+}\r
+\r
+std::pair<double, double> calculate_statistics(const std::vector<long> values)\r
+{\r
+ const auto sum = std::accumulate(values.begin(), values.end(), 0L);\r
+\r
+ const auto number_of_iterations = BenchmarkParameters::repetition *\r
+ BenchmarkParameters::loop;\r
+\r
+ const auto mean = sum / (double) number_of_iterations;\r
+\r
+ auto stddev_accumulator = 0.0;\r
+ for (auto v : values)\r
+ stddev_accumulator = pow((v / BenchmarkParameters::loop) - mean, 2);\r
+\r
+ const auto stddev = sqrt(stddev_accumulator / BenchmarkParameters::repetition);\r
+\r
+ return {mean, stddev};\r
+}\r
+\r
+std::vector<unsigned> get_sequence(const unsigned number)\r
+{\r
+ std::vector<unsigned> sequence(number);\r
+ std::iota(sequence.begin(), sequence.end(), 0);\r
+\r
+ return sequence;\r
+}\r
+\r
+char* read_data_to_aligned_array(const std::string &filename)\r
+{\r
+ std::ifstream input_stream(filename, std::ios::binary);\r
+\r
+ std::vector<char> buffer((std::istreambuf_iterator<char>(input_stream)),\r
+ std::istreambuf_iterator<char>());\r
+\r
+ if(buffer.size() == 0)\r
+ throw reading_input_file_exception();\r
+\r
+ auto aligned_buffer = aligned_malloc<char>((int) buffer.size(), 64);\r
+\r
+ if(aligned_buffer == nullptr)\r
+ throw std::runtime_error("Failed to allocate memory for the test vector!");\r
+\r
+ std::copy(buffer.begin(), buffer.end(), aligned_buffer);\r
+\r
+ return aligned_buffer;\r
+}\r
+\r
+json read_json_from_file(const std::string &filename)\r
+{\r
+ json result;\r
+\r
+ std::ifstream json_stream(filename);\r
+ if(!json_stream.is_open())\r
+ throw missing_config_file_exception();\r
+\r
+ json_stream >> result;\r
+\r
+ return result;\r
+}\r
+\r
+unsigned long tsc_recovery()\r
+{\r
+#ifndef _WIN64\r
+ constexpr auto ns_per_sec = 1E9;\r
+\r
+ struct timespec sleeptime = {.tv_nsec = __syscall_slong_t(5E8) };\r
+\r
+ struct timespec t_start, t_end;\r
+\r
+ if (clock_gettime(CLOCK_MONOTONIC_RAW, &t_start) == 0)\r
+ {\r
+ unsigned long start = tsc_tick();\r
+\r
+ nanosleep(&sleeptime,NULL);\r
+ clock_gettime(CLOCK_MONOTONIC_RAW, &t_end);\r
+\r
+ unsigned long end = tsc_tick();\r
+\r
+ unsigned long ns = (unsigned long)((t_end.tv_sec - t_start.tv_sec) * ns_per_sec + t_end.tv_nsec - t_start.tv_nsec);\r
+\r
+ double secs = (double) ns / ns_per_sec;\r
+\r
+ unsigned long resolution_timer = (unsigned long)((end - start)/secs);\r
+ unsigned long tick_per_usec = (resolution_timer / 1000000);\r
+\r
+ std::cout << "[----------] System clock (rdtsc) resolution " << resolution_timer << " [Hz]" << std::endl;\r
+ std::cout << "[----------] Ticks per us " << tick_per_usec << std::endl;\r
+\r
+ return tick_per_usec;\r
+ }\r
+#else\r
+\r
+ LARGE_INTEGER tick_per_sec;\r
+ QueryPerformanceFrequency(&tick_per_sec);\r
+\r
+ std::cout << "[----------] System clock (rdtsc) resolution unknown" << std::endl;\r
+ std::cout << "[----------] Ticks per us " << (tick_per_sec.QuadPart / 1000000) << std::endl;\r
+ return (unsigned long) tick_per_sec.QuadPart;\r
+\r
+#endif\r
+ return 0;\r
+}\r
+\r
+unsigned long tsc_tick()\r
+{\r
+#ifndef _WIN64\r
+ unsigned long hi, lo;\r
+\r
+ __asm volatile ("rdtsc" : "=a"(lo), "=d"(hi));\r
+\r
+ return lo | (hi << 32);\r
+#else\r
+ return 0;\r
+#endif\r
+}\r
+\r
+void KernelTests::print_and_store_results(const std::string &isa, const std::string ¶meters,\r
+ const std::string &module_name, const std::string &test_name,\r
+ const std::string &unit, const int para_factor,\r
+ const double mean, const double stddev)\r
+{\r
+ std::cout << "[----------] " << "Mean" << " = " << std::fixed << mean << " us" << std::endl;\r
+ std::cout << "[----------] " << "Stddev" << " = " << stddev << " us" << std::endl;\r
+\r
+#ifndef _WIN64\r
+ /* Two properties below should uniquely identify a test case */\r
+ RecordProperty("kernelname", module_name);\r
+ RecordProperty("parameters", parameters);\r
+\r
+ RecordProperty("isa", isa);\r
+ RecordProperty("unit", unit);\r
+ RecordProperty("parallelization_factor", para_factor);\r
+\r
+ RecordProperty("mean", std::to_string(mean));\r
+ RecordProperty("stddev", std::to_string(stddev));\r
+#endif\r
+}\r
Code Review / o-du / phy.git / blobdiff