1 /****************************************************************/ 2 /* Parallel Combinatorial BLAS Library (for Graph Computations) */ 3 /* version 1.6 -------------------------------------------------*/ 4 /* date: 6/15/2017 ---------------------------------------------*/ 5 /* authors: Ariful Azad, Aydin Buluc --------------------------*/ 6 /****************************************************************/ 7 /* 8 Copyright (c) 2010-2017, The Regents of the University of California 9 10 Permission is hereby granted, free of charge, to any person obtaining a copy 11 of this software and associated documentation files (the "Software"), to deal 12 in the Software without restriction, including without limitation the rights 13 to use, copy, modify, merge, publish, distribute, sublicense, and/or sell 14 copies of the Software, and to permit persons to whom the Software is 15 furnished to do so, subject to the following conditions: 16 17 The above copyright notice and this permission notice shall be included in 18 all copies or substantial portions of the Software. 19 20 THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 21 IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 22 FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE 23 AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER 24 LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, 25 OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN 26 THE SOFTWARE. 27 */ 28 29 30 /** 31 * Functions that are used by multiple parallel matrix classes, but don't need the "this" pointer 32 **/ 33 34 #ifndef _SP_PAR_HELPER_H_ 35 #define _SP_PAR_HELPER_H_ 36 37 #include <vector> 38 #include <array> 39 #include <mpi.h> 40 #include "LocArr.h" 41 #include "CommGrid.h" 42 #include "MPIType.h" 43 #include "SpDefs.h" 44 #include "psort/psort.h" 45 46 namespace combblas { 47 48 class SpParHelper 49 { 50 public: 51 template <typename IT> 52 static void ReDistributeToVector(int * & map_scnt, std::vector< std::vector< IT > > & locs_send, 53 std::vector< std::vector< std::string > > & data_send, std::vector<std::array<char, MAXVERTNAME>> & distmapper_array, const MPI_Comm & comm); 54 55 template<typename KEY, typename VAL, typename IT> 56 static void GlobalSelect(IT gl_rank, std::pair<KEY,VAL> * & low, std::pair<KEY,VAL> * & upp, std::pair<KEY,VAL> * array, IT length, const MPI_Comm & comm); 57 58 template<typename KEY, typename VAL, typename IT> 59 static void BipartiteSwap(std::pair<KEY,VAL> * low, std::pair<KEY,VAL> * array, IT length, int nfirsthalf, int color, const MPI_Comm & comm); 60 61 // Necessary because psort creates three 2D vectors of size p-by-p 62 // One of those vector with 8 byte data uses 8*(4096)^2 = 128 MB space 63 // Per processor extra storage becomes: 64 // 24 MB with 1K processors 65 // 96 MB with 2K processors 66 // 384 MB with 4K processors 67 // 1.5 GB with 8K processors 68 template<typename KEY, typename VAL, typename IT> 69 static void MemoryEfficientPSort(std::pair<KEY,VAL> * array, IT length, IT * dist, const MPI_Comm & comm); 70 71 template<typename KEY, typename VAL, typename IT> 72 static std::vector<std::pair<KEY,VAL>> KeyValuePSort(std::pair<KEY,VAL> * array, IT length, IT * dist, const MPI_Comm & comm); 73 74 template<typename KEY, typename VAL, typename IT> 75 static void DebugPrintKeys(std::pair<KEY,VAL> * array, IT length, IT * dist, MPI_Comm & World); 76 77 template<typename IT, typename NT, typename DER> 78 static void FetchMatrix(SpMat<IT,NT,DER> & MRecv, const std::vector<IT> & essentials, std::vector<MPI_Win> & arrwin, int ownind); 79 80 template<typename IT, typename NT, typename DER> 81 static void BCastMatrix(MPI_Comm & comm1d, SpMat<IT,NT,DER> & Matrix, const std::vector<IT> & essentials, int root); 82 83 template<typename IT, typename NT, typename DER> 84 static void GatherMatrix(MPI_Comm & comm1d, SpMat<IT,NT,DER> & Matrix, int root); 85 86 template<typename IT, typename NT, typename DER> 87 static void SetWindows(MPI_Comm & comm1d, const SpMat< IT,NT,DER > & Matrix, std::vector<MPI_Win> & arrwin); 88 89 template <typename IT, typename NT, typename DER> 90 static void GetSetSizes(const SpMat<IT,NT,DER> & Matrix, IT ** & sizes, MPI_Comm & comm1d); 91 92 template <typename IT, typename DER> 93 static void AccessNFetch(DER * & Matrix, int owner, std::vector<MPI_Win> & arrwin, MPI_Group & group, IT ** sizes); 94 95 template <typename IT, typename DER> 96 static void LockNFetch(DER * & Matrix, int owner, std::vector<MPI_Win> & arrwin, MPI_Group & group, IT ** sizes); 97 98 static void StartAccessEpoch(int owner, std::vector<MPI_Win> & arrwin, MPI_Group & group); 99 static void PostExposureEpoch(int self, std::vector<MPI_Win> & arrwin, MPI_Group & group); 100 static void LockWindows(int ownind, std::vector<MPI_Win> & arrwin); 101 static void UnlockWindows(int ownind, std::vector<MPI_Win> & arrwin); 102 103 static void Print(const std::string & s); 104 static void Print(const std::string & s, MPI_Comm & world); 105 static void PrintFile(const std::string & s, const std::string & filename); 106 static void PrintFile(const std::string & s, const std::string & filename, MPI_Comm & world); 107 static void check_newline(int *bytes_read, int bytes_requested, char *buf); 108 static bool FetchBatch(MPI_File & infile, MPI_Offset & curpos, MPI_Offset end_fpos, bool firstcall, std::vector<std::string> & lines, int myrank); 109 110 static void WaitNFree(std::vector<MPI_Win> & arrwin); 111 static void FreeWindows(std::vector<MPI_Win> & arrwin); 112 }; 113 114 } 115 116 #include "SpParHelper.cpp" 117 118 #endif 119