Chaste Commit::ca8ccdedf819b6e02855bc0e8e6f50bdecbc5208
ReplicatableVector.cpp
1/*
2
3Copyright (c) 2005-2024, University of Oxford.
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10This file is part of Chaste.
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12Redistribution and use in source and binary forms, with or without
13modification, are permitted provided that the following conditions are met:
14 * Redistributions of source code must retain the above copyright notice,
15 this list of conditions and the following disclaimer.
16 * Redistributions in binary form must reproduce the above copyright notice,
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19 * Neither the name of the University of Oxford nor the names of its
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21 software without specific prior written permission.
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23THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
24AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
25IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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34*/
35
36#include "ReplicatableVector.hpp"
37#include "Exception.hpp"
38#include "PetscTools.hpp"
39
40#include <cassert>
41#include <iostream>
42
43// Private methods
44
46{
47 if (mToAll != nullptr)
48 {
49 VecScatterDestroy(PETSC_DESTROY_PARAM(mToAll));
50 mToAll = nullptr;
51 }
52
53 if (mReplicated != nullptr)
54 {
56 mReplicated = nullptr;
57 }
58
59 if (mpData != nullptr)
60 {
61 delete[] mpData;
62 mpData = nullptr;
63 }
64}
65
66// Constructors & destructors
67
69 : mpData(nullptr),
70 mSize(0),
71 mToAll(nullptr),
72 mReplicated(nullptr)
73{
74}
75
77 : mpData(nullptr),
78 mSize(0),
79 mToAll(nullptr),
80 mReplicated(nullptr)
81{
83}
84
86 : mpData(nullptr),
87 mSize(0),
88 mToAll(nullptr),
89 mReplicated(nullptr)
90{
91 Resize(size);
92}
93
98
99// Vector interface methods
100
102{
103 return mSize;
104}
105
106void ReplicatableVector::Resize(unsigned size)
107{
108 // PETSc stuff will be out of date
110
111 mSize = size;
112
113 try
114 {
115 mpData = new double[mSize];
116 }
117// LCOV_EXCL_START
118 catch(std::bad_alloc &badAlloc)
119 {
120 std::cout << "Failed to allocate a ReplicatableVector of size " << size << std::endl;
122 throw badAlloc;
123 }
124// LCOV_EXCL_STOP
125
127}
128
129double& ReplicatableVector::operator[](unsigned index)
130{
131 assert(index < mSize);
132 return mpData[index];
133}
134
135// The workhorse methods
136
137void ReplicatableVector::Replicate(unsigned lo, unsigned hi)
138{
139 // Create a PetSC vector with the array containing the distributed data
140 Vec distributed_vec;
141
142#if (PETSC_VERSION_MAJOR == 3 && PETSC_VERSION_MINOR >= 3) //PETSc 3.3 or later
143 //Extra argument is block size
144 VecCreateMPIWithArray(PETSC_COMM_WORLD, 1, hi-lo, this->GetSize(), &mpData[lo], &distributed_vec);
145#else
146 VecCreateMPIWithArray(PETSC_COMM_WORLD, hi-lo, this->GetSize(), &mpData[lo], &distributed_vec);
147#endif
148#if (PETSC_VERSION_MAJOR == 3) //PETSc 3.x.x
149 VecSetOption(distributed_vec, VEC_IGNORE_OFF_PROC_ENTRIES, PETSC_TRUE);
150#else
151 VecSetOption(distributed_vec, VEC_IGNORE_OFF_PROC_ENTRIES);
152#endif
153 // Now do the real replication
154 ReplicatePetscVector(distributed_vec);
155
156 // Clean up
157 PetscTools::Destroy(distributed_vec);
158}
159
161{
162 // If the size has changed then we'll need to make a new context
163 PetscInt isize;
164 VecGetSize(vec, &isize);
165 unsigned size = isize;
166
167 if (this->GetSize() != size)
168 {
169 Resize(size);
170 }
171 if (mReplicated == nullptr)
172 {
173 // This creates mToAll (the scatter context) and mReplicated (to store values)
174 VecScatterCreateToAll(vec, &mToAll, &mReplicated);
175 }
176
177 // Replicate the data
178//PETSc-3.x.x or PETSc-2.3.3
179#if ((PETSC_VERSION_MAJOR == 3) || (PETSC_VERSION_MAJOR == 2 && PETSC_VERSION_MINOR == 3 && PETSC_VERSION_SUBMINOR == 3)) //2.3.3 or 3.x.x
180 VecScatterBegin(mToAll, vec, mReplicated, INSERT_VALUES, SCATTER_FORWARD);
181 VecScatterEnd (mToAll, vec, mReplicated, INSERT_VALUES, SCATTER_FORWARD);
182#else
183//PETSc-2.3.2 or previous
184 VecScatterBegin(vec, mReplicated, INSERT_VALUES, SCATTER_FORWARD, mToAll);
185 VecScatterEnd (vec, mReplicated, INSERT_VALUES, SCATTER_FORWARD, mToAll);
186#endif
187
188 // Information is now in mReplicated PETSc vector
189 // Copy into mData
190 double* p_replicated;
191 VecGetArray(mReplicated, &p_replicated);
192 for (unsigned i=0; i<size; i++)
193 {
194 mpData[i] = p_replicated[i];
195 }
196}
#define PETSC_DESTROY_PARAM(x)
static void Destroy(Vec &rVec)
static void ReplicateException(bool flag)
void ReplicatePetscVector(Vec vec)
void Resize(unsigned size)
double & operator[](unsigned index)
void Replicate(unsigned lo, unsigned hi)