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multi-pass I/O benchmark, with statistic and robustness summary
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@ -1,8 +1,16 @@
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#include "Benchmark_IO.hpp"
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#ifndef BENCH_IO_LMIN
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#define BENCH_IO_LMIN 20
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#endif
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#ifndef BENCH_IO_LMAX
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#define BENCH_IO_LMAX 40
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#define BENCH_IO_LMAX 30
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#endif
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#ifndef BENCH_IO_NPASS
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#define BENCH_IO_NPASS 10
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#endif
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using namespace Grid;
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@ -12,62 +20,174 @@ std::string filestem(const int l)
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return "iobench_l" + std::to_string(l);
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}
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int vol(const int i)
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{
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return BENCH_IO_LMIN + 2*i;
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}
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int volInd(const int l)
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{
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return (l - BENCH_IO_LMIN)/2;
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}
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template <typename Mat>
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void stats(Mat &mean, Mat &stdDev, const std::vector<Mat> &data)
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{
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auto nr = data[0].rows(), nc = data[0].cols();
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Eigen::MatrixXd sqSum(nr, nc);
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double n = static_cast<double>(data.size());
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assert(n > 1.);
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mean = Mat::Zero(nr, nc);
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sqSum = Mat::Zero(nr, nc);
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for (auto &d: data)
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{
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mean += d;
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sqSum += d.cwiseProduct(d);
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}
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stdDev = ((sqSum - mean.cwiseProduct(mean)/n)/(n - 1.)).cwiseSqrt();
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mean /= n;
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}
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#define grid_printf(...) \
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MSG << "";\
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printf(__VA_ARGS__);
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enum {sRead = 0, sWrite = 1, gRead = 2, gWrite = 3};
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int main (int argc, char ** argv)
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{
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Grid_init(&argc,&argv);
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int64_t threads = GridThread::GetThreads();
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auto mpi = GridDefaultMpi();
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unsigned int nVol = (BENCH_IO_LMAX - BENCH_IO_LMIN)/2 + 1;
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unsigned int nRelVol = (BENCH_IO_LMAX - 24)/2 + 1;
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std::vector<Eigen::MatrixXd> perf(BENCH_IO_NPASS, Eigen::MatrixXd::Zero(nVol, 4));
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std::vector<Eigen::VectorXd> avPerf(BENCH_IO_NPASS, Eigen::VectorXd::Zero(4));
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std::vector<int> latt;
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MSG << "Grid is setup to use " << threads << " threads" << std::endl;
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MSG << "MPI partition " << mpi << std::endl;
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for (unsigned int i = 0; i < BENCH_IO_NPASS; ++i)
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{
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MSG << BIGSEP << std::endl;
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MSG << "Pass " << i + 1 << "/" << BENCH_IO_NPASS << std::endl;
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MSG << BIGSEP << std::endl;
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MSG << SEP << std::endl;
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MSG << "Benchmark std write" << std::endl;
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MSG << SEP << std::endl;
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for (int l = 4; l <= BENCH_IO_LMAX; l += 2)
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for (int l = BENCH_IO_LMIN; l <= BENCH_IO_LMAX; l += 2)
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{
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latt = {l*mpi[0], l*mpi[1], l*mpi[2], l*mpi[3]};
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MSG << "-- Local volume " << l << "^4" << std::endl;
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writeBenchmark<LatticeFermion>(latt, filestem(l), stdWrite<LatticeFermion>);
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perf[i](volInd(l), sWrite) = BinaryIO::lastPerf.mbytesPerSecond;
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}
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MSG << SEP << std::endl;
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MSG << "Benchmark std read" << std::endl;
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MSG << SEP << std::endl;
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for (int l = 4; l <= BENCH_IO_LMAX; l += 2)
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for (int l = BENCH_IO_LMIN; l <= BENCH_IO_LMAX; l += 2)
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{
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latt = {l*mpi[0], l*mpi[1], l*mpi[2], l*mpi[3]};
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MSG << "-- Local volume " << l << "^4" << std::endl;
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readBenchmark<LatticeFermion>(latt, filestem(l), stdRead<LatticeFermion>);
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perf[i](volInd(l), sRead) = BinaryIO::lastPerf.mbytesPerSecond;
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}
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#ifdef HAVE_LIME
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MSG << SEP << std::endl;
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MSG << "Benchmark Grid C-Lime write" << std::endl;
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MSG << SEP << std::endl;
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for (int l = 4; l <= BENCH_IO_LMAX; l += 2)
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for (int l = BENCH_IO_LMIN; l <= BENCH_IO_LMAX; l += 2)
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{
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latt = {l*mpi[0], l*mpi[1], l*mpi[2], l*mpi[3]};
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MSG << "-- Local volume " << l << "^4" << std::endl;
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writeBenchmark<LatticeFermion>(latt, filestem(l), limeWrite<LatticeFermion>);
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perf[i](volInd(l), gWrite) = BinaryIO::lastPerf.mbytesPerSecond;
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}
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MSG << SEP << std::endl;
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MSG << "Benchmark Grid C-Lime read" << std::endl;
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MSG << SEP << std::endl;
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for (int l = 4; l <= BENCH_IO_LMAX; l += 2)
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for (int l = BENCH_IO_LMIN; l <= BENCH_IO_LMAX; l += 2)
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{
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latt = {l*mpi[0], l*mpi[1], l*mpi[2], l*mpi[3]};
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MSG << "-- Local volume " << l << "^4" << std::endl;
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readBenchmark<LatticeFermion>(latt, filestem(l), limeRead<LatticeFermion>);
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perf[i](volInd(l), gRead) = BinaryIO::lastPerf.mbytesPerSecond;
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}
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#endif
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avPerf[i].fill(0.);
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for (int f = 0; f < 4; ++f)
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for (int l = 24; l <= BENCH_IO_LMAX; l += 2)
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{
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avPerf[i](f) += perf[i](volInd(l), f);
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}
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avPerf[i] /= nRelVol;
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}
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Eigen::MatrixXd mean(nVol, 4), stdDev(nVol, 4), rob(nVol, 4);
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Eigen::VectorXd avMean(4), avStdDev(4), avRob(4);
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double n = BENCH_IO_NPASS;
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stats(mean, stdDev, perf);
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stats(avMean, avStdDev, avPerf);
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rob.fill(100.);
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rob -= 100.*stdDev.cwiseQuotient(mean.cwiseAbs());
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avRob.fill(100.);
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avRob -= 100.*avStdDev.cwiseQuotient(avMean.cwiseAbs());
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MSG << BIGSEP << std::endl;
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MSG << "SUMMARY" << std::endl;
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MSG << BIGSEP << std::endl;
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MSG << "Summary of individual results (all results in MB/s)." << std::endl;
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MSG << "Every second colum gives the standard deviation of the previous column." << std::endl;
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MSG << std::endl;
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grid_printf("%4s %12s %12s %12s %12s %12s %12s %12s %12s\n",
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"L", "std read", "std dev", "std write", "std dev",
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"Grid read", "std dev", "Grid write", "std dev");
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for (int l = BENCH_IO_LMIN; l <= BENCH_IO_LMAX; l += 2)
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{
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grid_printf("%4d %12.1f %12.1f %12.1f %12.1f %12.1f %12.1f %12.1f %12.1f\n",
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l, mean(volInd(l), sRead), stdDev(volInd(l), sRead),
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mean(volInd(l), sWrite), stdDev(volInd(l), sWrite),
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mean(volInd(l), gRead), stdDev(volInd(l), gRead),
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mean(volInd(l), gWrite), stdDev(volInd(l), gWrite));
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}
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MSG << std::endl;
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MSG << "Robustness of individual results, in \%. (rob = 100\% - std dev / mean)" << std::endl;
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MSG << std::endl;
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grid_printf("%4s %12s %12s %12s %12s\n",
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"L", "std read", "std write", "Grid read", "Grid write");
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for (int l = BENCH_IO_LMIN; l <= BENCH_IO_LMAX; l += 2)
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{
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grid_printf("%4d %12.1f %12.1f %12.1f %12.1f\n",
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l, rob(volInd(l), sRead), rob(volInd(l), sWrite),
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rob(volInd(l), gRead), rob(volInd(l), gWrite));
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}
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MSG << std::endl;
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MSG << "Summary of results averaged over local volumes 24^4-" << BENCH_IO_LMAX << "^4 (all results in MB/s)." << std::endl;
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MSG << "Every second colum gives the standard deviation of the previous column." << std::endl;
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MSG << std::endl;
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grid_printf("%12s %12s %12s %12s %12s %12s %12s %12s\n",
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"std read", "std dev", "std write", "std dev",
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"Grid read", "std dev", "Grid write", "std dev");
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grid_printf("%12.1f %12.1f %12.1f %12.1f %12.1f %12.1f %12.1f %12.1f\n",
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avMean(sRead), avStdDev(sRead), avMean(sWrite), avStdDev(sWrite),
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avMean(gRead), avStdDev(gRead), avMean(gWrite), avStdDev(gWrite));
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MSG << std::endl;
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MSG << "Robustness of volume-averaged results, in \%. (rob = 100\% - std dev / mean)" << std::endl;
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MSG << std::endl;
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grid_printf("%12s %12s %12s %12s\n",
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"std read", "std write", "Grid read", "Grid write");
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grid_printf("%12.1f %12.1f %12.1f %12.1f\n",
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avRob(sRead), avRob(sWrite), avRob(gRead), avRob(gWrite));
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Grid_finalize();
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@ -5,6 +5,8 @@
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#ifdef HAVE_LIME
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#define MSG std::cout << GridLogMessage
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#define SEP \
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"-----------------------------------------------------------------------------"
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#define BIGSEP \
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"============================================================================="
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namespace Grid {
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@ -37,9 +39,12 @@ using ReaderFn = std::function<void(Field &, const std::string)>;
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// ioWatch.Stop();
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// std::fclose(file);
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// size *= vec.Grid()->ProcessorCount();
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// MSG << "Std I/O write: Wrote " << size << " bytes in " << ioWatch.Elapsed()
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// << ", performance " << size/1024./1024./(ioWatch.useconds()/1.e6)
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// << " MB/s" << std::endl;
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// auto &p = BinaryIO::lastPerf;
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// p.size = size;
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// p.time = ioWatch.useconds();
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// p.mbytesPerSecond = size/1024./1024./(ioWatch.useconds()/1.e6);
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// MSG << "Std I/O write: Wrote " << p.size << " bytes in " << ioWatch.Elapsed()
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// << ", " << p.mbytesPerSecond << " MB/s" << std::endl;
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// MSG << "Std I/O write: checksum overhead " << crcWatch.Elapsed() << std::endl;
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// }
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//
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@ -72,9 +77,12 @@ using ReaderFn = std::function<void(Field &, const std::string)>;
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// MSG << "Std I/O read: Data CRC32 " << std::hex << crcData << std::dec << std::endl;
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// assert(crcData == crcRead);
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// size *= vec.Grid()->ProcessorCount();
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// MSG << "Std I/O read: Read " << size << " bytes in " << ioWatch.Elapsed()
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// << ", performance " << size/1024./1024./(ioWatch.useconds()/1.e6)
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// << " MB/s" << std::endl;
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// auto &p = BinaryIO::lastPerf;
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// p.size = size;
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// p.time = ioWatch.useconds();
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// p.mbytesPerSecond = size/1024./1024./(ioWatch.useconds()/1.e6);
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// MSG << "Std I/O read: Read " << p.size << " bytes in " << ioWatch.Elapsed()
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// << ", " << p.mbytesPerSecond << " MB/s" << std::endl;
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// MSG << "Std I/O read: checksum overhead " << crcWatch.Elapsed() << std::endl;
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// }
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@ -100,9 +108,12 @@ void stdWrite(const std::string filestem, Field &vec)
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file.flush();
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ioWatch.Stop();
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size *= vec.Grid()->ProcessorCount();
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MSG << "Std I/O write: Wrote " << size << " bytes in " << ioWatch.Elapsed()
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<< ", " << size/1024./1024./(ioWatch.useconds()/1.e6)
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<< " MB/s" << std::endl;
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auto &p = BinaryIO::lastPerf;
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p.size = size;
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p.time = ioWatch.useconds();
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p.mbytesPerSecond = size/1024./1024./(ioWatch.useconds()/1.e6);
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MSG << "Std I/O write: Wrote " << p.size << " bytes in " << ioWatch.Elapsed()
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<< ", " << p.mbytesPerSecond << " MB/s" << std::endl;
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MSG << "Std I/O write: checksum overhead " << crcWatch.Elapsed() << std::endl;
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}
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@ -135,9 +146,12 @@ void stdRead(Field &vec, const std::string filestem)
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MSG << "Std I/O read: Data CRC32 " << std::hex << crcData << std::dec << std::endl;
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assert(crcData == crcRead);
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size *= vec.Grid()->ProcessorCount();
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MSG << "Std I/O read: Read " << size << " bytes in " << ioWatch.Elapsed()
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<< ", " << size/1024./1024./(ioWatch.useconds()/1.e6)
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<< " MB/s" << std::endl;
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auto &p = BinaryIO::lastPerf;
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p.size = size;
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p.time = ioWatch.useconds();
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p.mbytesPerSecond = size/1024./1024./(ioWatch.useconds()/1.e6);
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MSG << "Std I/O read: Read " << p.size << " bytes in " << ioWatch.Elapsed()
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<< ", " << p.mbytesPerSecond << " MB/s" << std::endl;
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MSG << "Std I/O read: checksum overhead " << crcWatch.Elapsed() << std::endl;
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}
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@ -200,6 +214,7 @@ void writeBenchmark(const Coordinate &latt, const std::string filename,
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auto simd = GridDefaultSimd(latt.size(), Field::vector_type::Nsimd());
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std::shared_ptr<GridCartesian> gBasePt(SpaceTimeGrid::makeFourDimGrid(latt, simd, mpi));
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std::shared_ptr<GridBase> gPt;
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std::random_device rd;
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makeGrid(gPt, gBasePt, Ls, rb);
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@ -207,6 +222,11 @@ void writeBenchmark(const Coordinate &latt, const std::string filename,
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GridParallelRNG rng(g);
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Field vec(g);
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rng.SeedFixedIntegers({static_cast<int>(rd()), static_cast<int>(rd()),
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static_cast<int>(rd()), static_cast<int>(rd()),
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static_cast<int>(rd()), static_cast<int>(rd()),
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static_cast<int>(rd()), static_cast<int>(rd())});
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random(rng, vec);
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write(filename, vec);
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}
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