mirror of https://github.com/QMCPACK/qmcpack.git
27 lines
682 B
C++
27 lines
682 B
C++
#if COMPILATION_INSTRUCTIONS
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export PATH=/home/correaa/prj/alf/boost/mpi3/fake:$PATH
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mpic++ -O3 -std=c++14 -Wall -Wfatal-errors $0 -o $0x.x && time mpirun -np 1 $0x.x $@ && rm -f $0x.x; exit
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#endif
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#include "alf/boost/mpi3/main.hpp"
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#include "alf/boost/mpi3/process.hpp"
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namespace mpi3 = boost::mpi3;
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using std::cout;
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int mpi3::main(int argc, char* argv[], mpi3::communicator& world){
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if( world.size() < 2 ) throw std::runtime_error("needs 2 processes");
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int number = 0;
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if(world.rank() == 0){
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number = -1;
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world[1] << number;
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}else if(world.rank() == 1){
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world[0] >> number;
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cout << "process 1 received number " << number << " from process 0\n";
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}
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return 0;
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}
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