mirror of
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456 lines
16 KiB
C++
456 lines
16 KiB
C++
/*************************************************************************************
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Grid physics library, www.github.com/paboyle/Grid
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Source file: ./lib/Init.cc
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Copyright (C) 2015
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Author: Azusa Yamaguchi <ayamaguc@staffmail.ed.ac.uk>
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Author: Peter Boyle <paboyle@ph.ed.ac.uk>
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Author: Peter Boyle <peterboyle@MacBook-Pro.local>
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Author: paboyle <paboyle@ph.ed.ac.uk>
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License along
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with this program; if not, write to the Free Software Foundation, Inc.,
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51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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See the full license in the file "LICENSE" in the top level distribution directory
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*************************************************************************************/
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/* END LEGAL */
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/****************************************************************************/
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/* pab: Signal magic. Processor state dump is x86-64 specific */
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/****************************************************************************/
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#include <stdlib.h>
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#include <stdio.h>
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#include <stdint.h>
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#include <unistd.h>
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#include <sys/mman.h>
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#include <sys/stat.h>
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#include <sys/time.h>
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#include <signal.h>
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#include <iostream>
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#include <iterator>
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#include <algorithm>
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#include <iterator>
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#include <cstdlib>
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#include <memory>
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#include <Grid/Grid.h>
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#include <fenv.h>
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#ifdef __APPLE__
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static int
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feenableexcept (unsigned int excepts)
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{
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static fenv_t fenv;
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unsigned int new_excepts = excepts & FE_ALL_EXCEPT,
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old_excepts; // previous masks
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if ( fegetenv (&fenv) ) return -1;
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old_excepts = fenv.__control & FE_ALL_EXCEPT;
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// unmask
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fenv.__control &= ~new_excepts;
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fenv.__mxcsr &= ~(new_excepts << 7);
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return ( fesetenv (&fenv) ? -1 : old_excepts );
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}
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#endif
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namespace Grid {
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//////////////////////////////////////////////////////
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// Convenience functions to access stadard command line arg
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// driven parallelism controls
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//////////////////////////////////////////////////////
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static std::vector<int> Grid_default_latt;
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static std::vector<int> Grid_default_mpi;
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int GridThread::_threads =1;
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int GridThread::_hyperthreads=1;
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int GridThread::_cores=1;
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const std::vector<int> &GridDefaultLatt(void) {return Grid_default_latt;};
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const std::vector<int> &GridDefaultMpi(void) {return Grid_default_mpi;};
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const std::vector<int> GridDefaultSimd(int dims,int nsimd)
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{
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std::vector<int> layout(dims);
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int nn=nsimd;
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for(int d=dims-1;d>=0;d--){
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if ( nn>=2) {
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layout[d]=2;
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nn/=2;
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} else {
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layout[d]=1;
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}
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}
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assert(nn==1);
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return layout;
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}
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////////////////////////////////////////////////////////////
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// Command line parsing assist for stock controls
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////////////////////////////////////////////////////////////
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std::string GridCmdOptionPayload(char ** begin, char ** end, const std::string & option)
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{
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char ** itr = std::find(begin, end, option);
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if (itr != end && ++itr != end) {
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std::string payload(*itr);
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return payload;
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}
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return std::string("");
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}
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bool GridCmdOptionExists(char** begin, char** end, const std::string& option)
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{
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return std::find(begin, end, option) != end;
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}
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// Comma separated list
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void GridCmdOptionCSL(std::string str,std::vector<std::string> & vec)
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{
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size_t pos = 0;
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std::string token;
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std::string delimiter(",");
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vec.resize(0);
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while ((pos = str.find(delimiter)) != std::string::npos) {
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token = str.substr(0, pos);
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vec.push_back(token);
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str.erase(0, pos + delimiter.length());
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}
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token = str;
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vec.push_back(token);
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return;
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}
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void GridCmdOptionIntVector(std::string &str,std::vector<int> & vec)
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{
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vec.resize(0);
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std::stringstream ss(str);
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int i;
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while (ss >> i){
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vec.push_back(i);
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if(std::ispunct(ss.peek()))
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ss.ignore();
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}
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return;
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}
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void GridCmdOptionInt(std::string &str,int & val)
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{
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std::stringstream ss(str);
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ss>>val;
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return;
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}
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void GridParseLayout(char **argv,int argc,
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std::vector<int> &latt,
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std::vector<int> &mpi)
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{
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mpi =std::vector<int>({1,1,1,1});
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latt=std::vector<int>({8,8,8,8});
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GridThread::SetMaxThreads();
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std::string arg;
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if( GridCmdOptionExists(argv,argv+argc,"--mpi") ){
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arg = GridCmdOptionPayload(argv,argv+argc,"--mpi");
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GridCmdOptionIntVector(arg,mpi);
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}
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if( GridCmdOptionExists(argv,argv+argc,"--grid") ){
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arg= GridCmdOptionPayload(argv,argv+argc,"--grid");
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GridCmdOptionIntVector(arg,latt);
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}
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if( GridCmdOptionExists(argv,argv+argc,"--threads") ){
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std::vector<int> ompthreads(0);
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#ifndef GRID_OMP
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std::cout << GridLogWarning << "'--threads' option used but Grid was"
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<< " not compiled with thread support" << std::endl;
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#endif
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arg= GridCmdOptionPayload(argv,argv+argc,"--threads");
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GridCmdOptionIntVector(arg,ompthreads);
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assert(ompthreads.size()==1);
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GridThread::SetThreads(ompthreads[0]);
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}
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if( GridCmdOptionExists(argv,argv+argc,"--cores") ){
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int cores;
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arg= GridCmdOptionPayload(argv,argv+argc,"--cores");
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GridCmdOptionInt(arg,cores);
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GridThread::SetCores(cores);
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}
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}
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std::string GridCmdVectorIntToString(const std::vector<int> & vec){
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std::ostringstream oss;
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std::copy(vec.begin(), vec.end(),std::ostream_iterator<int>(oss, " "));
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return oss.str();
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}
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/////////////////////////////////////////////////////////
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// Reinit guard
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/////////////////////////////////////////////////////////
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static int Grid_is_initialised = 0;
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void Grid_init(int *argc,char ***argv)
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{
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GridLogger::StopWatch.Start();
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std::string arg;
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////////////////////////////////////
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// Shared memory block size
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////////////////////////////////////
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if( GridCmdOptionExists(*argv,*argv+*argc,"--shm") ){
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int MB;
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arg= GridCmdOptionPayload(*argv,*argv+*argc,"--shm");
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GridCmdOptionInt(arg,MB);
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CartesianCommunicator::MAX_MPI_SHM_BYTES = MB*1024*1024;
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}
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if( GridCmdOptionExists(*argv,*argv+*argc,"--debug-signals") ){
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Grid_debug_handler_init();
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}
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CartesianCommunicator::Init(argc,argv);
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if( !GridCmdOptionExists(*argv,*argv+*argc,"--debug-stdout") ){
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Grid_quiesce_nodes();
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} else {
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std::ostringstream fname;
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fname<<"Grid.stdout.";
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fname<<CartesianCommunicator::RankWorld();
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freopen(fname.str().c_str(),"w",stdout);
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}
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////////////////////////////////////
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// Banner
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////////////////////////////////////
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if ( CartesianCommunicator::RankWorld() == 0 ) {
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std::cout <<std::endl;
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std::cout << "__|__|__|__|__|__|__|__|__|__|__|__|__|__|__"<<std::endl;
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std::cout << "__|__|__|__|__|__|__|__|__|__|__|__|__|__|__"<<std::endl;
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std::cout << "__|_ | | | | | | | | | | | | _|__"<<std::endl;
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std::cout << "__|_ _|__"<<std::endl;
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std::cout << "__|_ GGGG RRRR III DDDD _|__"<<std::endl;
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std::cout << "__|_ G R R I D D _|__"<<std::endl;
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std::cout << "__|_ G R R I D D _|__"<<std::endl;
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std::cout << "__|_ G GG RRRR I D D _|__"<<std::endl;
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std::cout << "__|_ G G R R I D D _|__"<<std::endl;
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std::cout << "__|_ GGGG R R III DDDD _|__"<<std::endl;
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std::cout << "__|_ _|__"<<std::endl;
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std::cout << "__|__|__|__|__|__|__|__|__|__|__|__|__|__|__"<<std::endl;
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std::cout << "__|__|__|__|__|__|__|__|__|__|__|__|__|__|__"<<std::endl;
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std::cout << " | | | | | | | | | | | | | | "<<std::endl;
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std::cout << std::endl;
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std::cout << std::endl;
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std::cout << "Copyright (C) 2015 Peter Boyle, Azusa Yamaguchi, Guido Cossu, Antonin Portelli and other authors"<<std::endl;
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std::cout << std::endl;
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std::cout << "This program is free software; you can redistribute it and/or modify"<<std::endl;
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std::cout << "it under the terms of the GNU General Public License as published by"<<std::endl;
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std::cout << "the Free Software Foundation; either version 2 of the License, or"<<std::endl;
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std::cout << "(at your option) any later version."<<std::endl;
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std::cout << std::endl;
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std::cout << "This program is distributed in the hope that it will be useful,"<<std::endl;
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std::cout << "but WITHOUT ANY WARRANTY; without even the implied warranty of"<<std::endl;
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std::cout << "MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the"<<std::endl;
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std::cout << "GNU General Public License for more details."<<std::endl;
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std::cout << std::endl;
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}
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////////////////////////////////////
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// Logging
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////////////////////////////////////
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std::vector<std::string> logstreams;
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std::string defaultLog("Error,Warning,Message,Performance");
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GridCmdOptionCSL(defaultLog,logstreams);
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GridLogConfigure(logstreams);
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if( GridCmdOptionExists(*argv,*argv+*argc,"--log") ){
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arg = GridCmdOptionPayload(*argv,*argv+*argc,"--log");
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GridCmdOptionCSL(arg,logstreams);
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GridLogConfigure(logstreams);
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}
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////////////////////////////////////
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// Help message
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////////////////////////////////////
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if( GridCmdOptionExists(*argv,*argv+*argc,"--help") ){
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std::cout<<GridLogMessage<<" --help : this message"<<std::endl;
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std::cout<<GridLogMessage<<std::endl;
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std::cout<<GridLogMessage<<"Geometry:"<<std::endl;
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std::cout<<GridLogMessage<<std::endl;
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std::cout<<GridLogMessage<<" --mpi n.n.n.n : default MPI decomposition"<<std::endl;
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std::cout<<GridLogMessage<<" --threads n : default number of OMP threads"<<std::endl;
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std::cout<<GridLogMessage<<" --grid n.n.n.n : default Grid size"<<std::endl;
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std::cout<<GridLogMessage<<" --shm M : allocate M megabytes of shared memory for comms"<<std::endl;
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std::cout<<GridLogMessage<<std::endl;
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std::cout<<GridLogMessage<<"Verbose and debug:"<<std::endl;
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std::cout<<GridLogMessage<<std::endl;
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std::cout<<GridLogMessage<<" --log list : comma separated list from Error,Warning,Message,Performance,Iterative,Integrator,Debug,Colours"<<std::endl;
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std::cout<<GridLogMessage<<" --decomposition : report on default omp,mpi and simd decomposition"<<std::endl;
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std::cout<<GridLogMessage<<" --debug-signals : catch sigsegv and print a blame report"<<std::endl;
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std::cout<<GridLogMessage<<" --debug-stdout : print stdout from EVERY node"<<std::endl;
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std::cout<<GridLogMessage<<" --notimestamp : suppress millisecond resolution stamps"<<std::endl;
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std::cout<<GridLogMessage<<std::endl;
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std::cout<<GridLogMessage<<"Performance:"<<std::endl;
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std::cout<<GridLogMessage<<std::endl;
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std::cout<<GridLogMessage<<" --comms-isend : Asynchronous MPI calls; several dirs at a time "<<std::endl;
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std::cout<<GridLogMessage<<" --comms-sendrecv: Synchronous MPI calls; one dirs at a time "<<std::endl;
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std::cout<<GridLogMessage<<" --comms-overlap : Overlap comms with compute "<<std::endl;
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std::cout<<GridLogMessage<<std::endl;
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std::cout<<GridLogMessage<<" --dslash-generic: Wilson kernel for generic Nc"<<std::endl;
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std::cout<<GridLogMessage<<" --dslash-unroll : Wilson kernel for Nc=3"<<std::endl;
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std::cout<<GridLogMessage<<" --dslash-asm : Wilson kernel for AVX512"<<std::endl;
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std::cout<<GridLogMessage<<std::endl;
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std::cout<<GridLogMessage<<" --lebesgue : Cache oblivious Lebesgue curve/Morton order/Z-graph stencil looping"<<std::endl;
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std::cout<<GridLogMessage<<" --cacheblocking n.m.o.p : Hypercuboidal cache blocking"<<std::endl;
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std::cout<<GridLogMessage<<std::endl;
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exit(EXIT_SUCCESS);
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}
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////////////////////////////////////
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// Debug and performance options
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////////////////////////////////////
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if( GridCmdOptionExists(*argv,*argv+*argc,"--dslash-unroll") ){
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QCD::WilsonKernelsStatic::Opt=QCD::WilsonKernelsStatic::OptHandUnroll;
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}
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if( GridCmdOptionExists(*argv,*argv+*argc,"--dslash-asm") ){
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QCD::WilsonKernelsStatic::Opt=QCD::WilsonKernelsStatic::OptInlineAsm;
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}
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if( GridCmdOptionExists(*argv,*argv+*argc,"--dslash-generic") ){
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QCD::WilsonKernelsStatic::Opt=QCD::WilsonKernelsStatic::OptGeneric;
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}
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if( GridCmdOptionExists(*argv,*argv+*argc,"--comms-overlap") ){
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QCD::WilsonKernelsStatic::Comms = QCD::WilsonKernelsStatic::CommsAndCompute;
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} else {
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QCD::WilsonKernelsStatic::Comms = QCD::WilsonKernelsStatic::CommsThenCompute;
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}
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if( GridCmdOptionExists(*argv,*argv+*argc,"--comms-concurrent") ){
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CartesianCommunicator::SetCommunicatorPolicy(CartesianCommunicator::CommunicatorPolicyConcurrent);
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}
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if( GridCmdOptionExists(*argv,*argv+*argc,"--comms-sequential") ){
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CartesianCommunicator::SetCommunicatorPolicy(CartesianCommunicator::CommunicatorPolicySequential);
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}
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if( GridCmdOptionExists(*argv,*argv+*argc,"--lebesgue") ){
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LebesgueOrder::UseLebesgueOrder=1;
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}
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if( GridCmdOptionExists(*argv,*argv+*argc,"--cacheblocking") ){
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arg= GridCmdOptionPayload(*argv,*argv+*argc,"--cacheblocking");
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GridCmdOptionIntVector(arg,LebesgueOrder::Block);
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}
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if( GridCmdOptionExists(*argv,*argv+*argc,"--notimestamp") ){
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GridLogTimestamp(0);
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} else {
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GridLogTimestamp(1);
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}
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GridParseLayout(*argv,*argc,
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Grid_default_latt,
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Grid_default_mpi);
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std::cout << GridLogMessage << "Requesting "<< CartesianCommunicator::MAX_MPI_SHM_BYTES <<" byte stencil comms buffers "<<std::endl;
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if( GridCmdOptionExists(*argv,*argv+*argc,"--decomposition") ){
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std::cout<<GridLogMessage<<"Grid Decomposition\n";
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std::cout<<GridLogMessage<<"\tOpenMP threads : "<<GridThread::GetThreads()<<std::endl;
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std::cout<<GridLogMessage<<"\tMPI tasks : "<<GridCmdVectorIntToString(GridDefaultMpi())<<std::endl;
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std::cout<<GridLogMessage<<"\tvRealF : "<<sizeof(vRealF)*8 <<"bits ; " <<GridCmdVectorIntToString(GridDefaultSimd(4,vRealF::Nsimd()))<<std::endl;
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std::cout<<GridLogMessage<<"\tvRealD : "<<sizeof(vRealD)*8 <<"bits ; " <<GridCmdVectorIntToString(GridDefaultSimd(4,vRealD::Nsimd()))<<std::endl;
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std::cout<<GridLogMessage<<"\tvComplexF : "<<sizeof(vComplexF)*8 <<"bits ; " <<GridCmdVectorIntToString(GridDefaultSimd(4,vComplexF::Nsimd()))<<std::endl;
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std::cout<<GridLogMessage<<"\tvComplexD : "<<sizeof(vComplexD)*8 <<"bits ; " <<GridCmdVectorIntToString(GridDefaultSimd(4,vComplexD::Nsimd()))<<std::endl;
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}
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Grid_is_initialised = 1;
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}
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void Grid_finalize(void)
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{
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#if defined (GRID_COMMS_MPI) || defined (GRID_COMMS_MPI3)
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MPI_Finalize();
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Grid_unquiesce_nodes();
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#endif
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}
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void * Grid_backtrace_buffer[_NBACKTRACE];
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void Grid_sa_signal_handler(int sig,siginfo_t *si,void * ptr)
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{
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fprintf(stderr,"Caught signal %d\n",si->si_signo);
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fprintf(stderr," mem address %llx\n",(unsigned long long)si->si_addr);
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fprintf(stderr," code %d\n",si->si_code);
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// Linux/Posix
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#ifdef __linux__
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// And x86 64bit
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#ifdef __x86_64__
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ucontext_t * uc= (ucontext_t *)ptr;
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struct sigcontext *sc = (struct sigcontext *)&uc->uc_mcontext;
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fprintf(stderr," instruction %llx\n",(unsigned long long)sc->rip);
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#define REG(A) printf(" %s %lx\n",#A,sc-> A);
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REG(rdi);
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REG(rsi);
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REG(rbp);
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REG(rbx);
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REG(rdx);
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REG(rax);
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REG(rcx);
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REG(rsp);
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REG(rip);
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REG(r8);
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REG(r9);
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REG(r10);
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REG(r11);
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REG(r12);
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REG(r13);
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REG(r14);
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REG(r15);
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#endif
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#endif
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fflush(stderr);
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BACKTRACEFP(stderr);
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fprintf(stderr,"Called backtrace\n");
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fflush(stdout);
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fflush(stderr);
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exit(0);
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return;
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};
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void Grid_debug_handler_init(void)
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{
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struct sigaction sa,osa;
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sigemptyset (&sa.sa_mask);
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sa.sa_sigaction= Grid_sa_signal_handler;
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sa.sa_flags = SA_SIGINFO;
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sigaction(SIGSEGV,&sa,NULL);
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sigaction(SIGTRAP,&sa,NULL);
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sigaction(SIGBUS,&sa,NULL);
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feenableexcept( FE_INVALID|FE_OVERFLOW|FE_DIVBYZERO);
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sigaction(SIGFPE,&sa,NULL);
|
|
sigaction(SIGKILL,&sa,NULL);
|
|
}
|
|
}
|