Initial Commit

Contributors:
Ammar ELWazir <aelwazir@amd.com>
AravindanC <aravindan.cheruvally@amd.com>
Benjamin Welton <bewelton@amd.com>
Ma, Bing <Bing.Ma@amd.com>
Chun Yang <chun.yang@amd.com>
Cole Nelson <cole.nelson@amd.com>
Ethan Stewart <ethan.stewart@amd.com>
Evgeny <evgeny.shcherbakov@amd.com>
Freddy Paul <Freddy.paul@amd.com>
Giovanni Baraldi <gbaraldi@amd.com>
Gopesh Bhardwaj <Gopesh.Bhardwaj@amd.com>
Icarus Sparry <icarus.sparry@amd.com>
itrowbri <Ian.Trowbridge@amd.com>
James Edwards <JamesAdrian.Edwards@amd.com>
jatang <jatang@amd.com>
Jeremy Newton <Jeremy.Newton@amd.com>
Jonathan Kim <jonathan.kim@amd.com>
Kent Russell <kent.russell@amd.com>
Kiumars Sabeti <kiumars.sabeti@amd.com>
Lang Yu <lang.yu@amd.com>
Laurent Morichetti <laurent.morichetti@amd.com>
Mallya, Ameya Keshava <AmeyaKeshava.Mallya@amd.com>
Manjunath Jakaraddi <manjunath.jakaraddi@amd.com>
Mark Laws <markdavid.laws@amd.com>
Mohan Kumar Mithur <Mohan.KumarMithur@amd.com>
Nicholas Curtis <nicurtis@amd.com>
Nirmal Unnikrishnan <Nirmal.Unnikrishnan@amd.com>
Parag Bhandari <parag.bhandari@amd.com>
Ranjith Ramakrishnan <Ranjith.Ramakrishnan@amd.com>
Robert Gregory <Robert.Gregory@amd.com>
Saravanan Solaiyappan <saravanan.solaiyappan@amd.com>
Saurabh Verma <saurabh.verma@amd.com>
Srihari Uttanur <srihari.u@amd.com>
Srinivasan Subramanian <srinivasan.subramanian@amd.com>
Sriraksha Nagaraj <Sriraksha.Nagaraj@amd.com>
Sushma Vaddireddy <svaddire@amd.com>
Xianwei Zhang <Xianwei.Zhang@amd.com>

test/util/perf_timer.cpp

@@ -0,0 +1,177 @@
+// MIT License
+//
+// Copyright (c) 2017-2025 Advanced Micro Devices, Inc.
+//
+// Permission is hereby granted, free of charge, to any person obtaining a copy
+// of this software and associated documentation files (the "Software"), to deal
+// in the Software without restriction, including without limitation the rights
+// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+// copies of the Software, and to permit persons to whom the Software is
+// furnished to do so, subject to the following conditions:
+//
+// The above copyright notice and this permission notice shall be included in
+// all copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+// THE SOFTWARE.
+
+
+#include "util/perf_timer.h"
+
+PerfTimer::PerfTimer() { freq_in_100mhz_ = MeasureTSCFreqHz(); }
+
+PerfTimer::~PerfTimer() {
+  while (!timers_.empty()) {
+    Timer* temp = timers_.back();
+    timers_.pop_back();
+    delete temp;
+  }
+}
+
+// New cretaed timer instantance index will be returned
+int PerfTimer::CreateTimer() {
+  Timer* newTimer = new Timer;
+  newTimer->start = 0;
+  newTimer->clocks = 0;
+
+#ifdef _WIN32
+  QueryPerformanceFrequency((LARGE_INTEGER*)&newTimer->freq);
+#else
+  newTimer->freq = (long long)1.0E3;
+#endif
+
+  /* Push back the address of new Timer instance created */
+  timers_.push_back(newTimer);
+  return (int)(timers_.size() - 1);
+}
+
+int PerfTimer::StartTimer(int index) {
+  if (index >= (int)timers_.size()) {
+    Error("Cannot reset timer. Invalid handle.");
+    return FAILURE;
+  }
+
+#ifdef _WIN32
+// General Windows timing method
+#ifndef _AMD
+  long long tmpStart;
+  QueryPerformanceCounter((LARGE_INTEGER*)&(tmpStart));
+  timers_[index]->start = (double)tmpStart;
+#else
+// AMD Windows timing method
+#endif
+#else
+// General Linux timing method
+#ifndef _AMD
+  struct timeval s;
+  gettimeofday(&s, 0);
+  timers_[index]->start = s.tv_sec * 1.0E3 + ((double)(s.tv_usec / 1.0E3));
+#else
+  // AMD timing method
+  unsigned int unused;
+  timers_[index]->start = __rdtscp(&unused);
+#endif
+#endif
+
+  return SUCCESS;
+}
+
+int PerfTimer::StopTimer(int index) {
+  double n = 0;
+  if (index >= (int)timers_.size()) {
+    Error("Cannot reset timer. Invalid handle.");
+    return FAILURE;
+  }
+#ifdef _WIN32
+#ifndef _AMD
+  long long n1;
+  QueryPerformanceCounter((LARGE_INTEGER*)&(n1));
+  n = (double)n1;
+#else
+// AMD Window Timing
+#endif
+
+#else
+// General Linux timing method
+#ifndef _AMD
+  struct timeval s;
+  gettimeofday(&s, 0);
+  n = s.tv_sec * 1.0E3 + (double)(s.tv_usec / 1.0E3);
+#else
+  // AMD Linux timing
+  unsigned int unused;
+  n = __rdtscp(&unused);
+#endif
+#endif
+
+  n -= timers_[index]->start;
+  timers_[index]->start = 0;
+
+#ifndef _AMD
+  timers_[index]->clocks += n;
+#else
+  // timers_[index]->clocks += 10 * n / freq_in_100mhz_; // unit is ns
+  timers_[index]->clocks += 1.0E-6 * 10 * n / freq_in_100mhz_;  // convert to ms
+#endif
+
+  return SUCCESS;
+}
+
+void PerfTimer::Error(std::string str) { std::cout << str << std::endl; }
+
+double PerfTimer::ReadTimer(int index) {
+  if (index >= (int)timers_.size()) {
+    Error("Cannot read timer. Invalid handle.");
+    return FAILURE;
+  }
+
+  double reading = double(timers_[index]->clocks);
+
+  reading = double(reading / timers_[index]->freq);
+
+  return reading;
+}
+
+uint64_t PerfTimer::CoarseTimestampUs() {
+#ifdef _WIN32
+  uint64_t freqHz, ticks;
+  QueryPerformanceFrequency((LARGE_INTEGER*)&freqHz);
+  QueryPerformanceCounter((LARGE_INTEGER*)&ticks);
+
+  // Scale numerator and divisor until (ticks * 1000000) fits in uint64_t.
+  while (ticks > (1ULL << 44)) {
+    ticks /= 16;
+    freqHz /= 16;
+  }
+
+  return (ticks * 1000000) / freqHz;
+#else
+  struct timespec ts;
+  clock_gettime(CLOCK_MONOTONIC_RAW, &ts);
+  return uint64_t(ts.tv_sec) * 1000000 + ts.tv_nsec / 1000;
+#endif
+}
+
+uint64_t PerfTimer::MeasureTSCFreqHz() {
+  // Make a coarse interval measurement of TSC ticks for 1 gigacycles.
+  unsigned int unused;
+  uint64_t tscTicksEnd;
+
+  uint64_t coarseBeginUs = CoarseTimestampUs();
+  uint64_t tscTicksBegin = __rdtscp(&unused);
+  do {
+    tscTicksEnd = __rdtscp(&unused);
+  } while (tscTicksEnd - tscTicksBegin < 1000000000);
+
+  uint64_t coarseEndUs = CoarseTimestampUs();
+
+  // Compute the TSC frequency and round to nearest 100MHz.
+  uint64_t coarseIntervalNs = (coarseEndUs - coarseBeginUs) * 1000;
+  uint64_t tscIntervalTicks = tscTicksEnd - tscTicksBegin;
+  return (tscIntervalTicks * 10 + (coarseIntervalNs / 2)) / coarseIntervalNs;
+}