ExaFMM 1
Fast-multipole Method for exascale systems
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00001 /* 00002 Copyright (C) 2011 by Rio Yokota, Simon Layton, Lorena Barba 00003 00004 Permission is hereby granted, free of charge, to any person obtaining a copy 00005 of this software and associated documentation files (the "Software"), to deal 00006 in the Software without restriction, including without limitation the rights 00007 to use, copy, modify, merge, publish, distribute, sublicense, and/or sell 00008 copies of the Software, and to permit persons to whom the Software is 00009 furnished to do so, subject to the following conditions: 00010 00011 The above copyright notice and this permission notice shall be included in 00012 all copies or substantial portions of the Software. 00013 00014 THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 00015 IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 00016 FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE 00017 AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER 00018 LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, 00019 OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN 00020 THE SOFTWARE. 00021 */ 00022 #include <mpi.h> 00023 #include <iostream> 00024 00025 int main(int argc, char **argv) { 00026 char hostname[256]; 00027 int size,rank; 00028 MPI_Init(&argc,&argv); 00029 MPI_Comm_size(MPI_COMM_WORLD,&size); 00030 MPI_Comm_rank(MPI_COMM_WORLD,&rank); 00031 gethostname(hostname,sizeof(hostname)); 00032 for( int irank=0; irank!=size; ++irank ) { 00033 MPI_Barrier(MPI_COMM_WORLD); 00034 if( rank == irank ) { 00035 std::cout << hostname << " " << rank << " / " << size << std::endl; 00036 } 00037 usleep(100); 00038 } 00039 MPI_Finalize(); 00040 }