Chaste Commit::ca8ccdedf819b6e02855bc0e8e6f50bdecbc5208
DistributedVector.hpp
1/*
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3Copyright (c) 2005-2024, University of Oxford.
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34*/
35
36
37#ifndef DISTRIBUTEDVECTOR_HPP_
38#define DISTRIBUTEDVECTOR_HPP_
39
40#include <vector>
41#include <petscvec.h>
42#include <iostream>
43#include <cassert>
44
45#include "DistributedVectorException.hpp"
46
48
56{
57private:
58 friend class TestDistributedVector;
59
60 // Data global to all vectors
61
63 unsigned mLo;
64
66 unsigned mHi;
67
69 unsigned mProblemSize;
70
71 // Data local to a single vector
72
75
78
80 double* mpVec;
81
87
94
95
96public:
97
104 bool IsGlobalIndexLocal(unsigned globalIndex);
105
118 DistributedVector(Vec vec, DistributedVectorFactory* pFactory, bool readOnly=false);
119
123 unsigned GetHigh() const
124 {
125 return mHi;
126 }
127
131 unsigned GetLow() const
132 {
133 return mLo;
134 }
135
143
151 double& operator[](unsigned globalIndex);
152
161 void Restore();
162
168 {
169 public:
170 unsigned Local;
171 unsigned Global;
179 bool operator!=(const Iterator& rOther);
180
185 };
186
194 class Stripe
195 {
196 unsigned mStride;
197 unsigned mStripe;
198 double* mpVec;
199 unsigned mLo;
200 unsigned mHi;
203 public:
210 Stripe(DistributedVector parallelVec, unsigned stripe)
211 {
212 mStride = parallelVec.mSizeMultiplier;
213 mStripe = stripe;
214 assert(mStripe < mStride);
215 mpVec = parallelVec.mpVec;
216 mLo = parallelVec.GetLow();
217 mHi = parallelVec.GetHigh();
218 mpFactory = parallelVec.GetFactory();
219 }
220
228
237 double& operator[](unsigned globalIndex)
238 {
239 if (mLo <= globalIndex && globalIndex < mHi)
240 {
241 return mpVec[(globalIndex - mLo)*mStride + mStripe];
242 }
244 }
245
250 double& operator[](Iterator index)
251 {
252 return mpVec[index.Local*mStride + mStripe];
253 }
254 };
255
263 class Chunk
264 {
265 unsigned mOffset;
266 double* mpVec;
267 unsigned mLo;
268 unsigned mHi;
270 public:
277 Chunk(DistributedVector parallelVec, unsigned chunk)
278 {
279 assert(chunk < parallelVec.mSizeMultiplier);
280 mLo = parallelVec.GetLow();
281 mHi = parallelVec.GetHigh();
282 mOffset = chunk * (mHi - mLo);
283 mpVec = parallelVec.mpVec;
284 }
285
294 double& operator[](unsigned globalIndex)
295 {
296 if (mLo <= globalIndex && globalIndex < mHi)
297 {
298 //localIndex = globalIndex - mLo
299 return mpVec[mOffset + globalIndex - mLo];
300 }
302 }
303
308 double& operator[](Iterator index)
309 {
310 return mpVec[mOffset + index.Local];
311 }
312 };
313
318 Iterator Begin();
319
324 Iterator End();
325
331 double& operator[](Iterator index);
332};
333
334#endif /*DISTRIBUTEDVECTOR_HPP_*/
double & operator[](Iterator index)
Chunk(DistributedVector parallelVec, unsigned chunk)
double & operator[](unsigned globalIndex)
bool operator!=(const Iterator &rOther)
double & operator[](unsigned globalIndex)
double & operator[](Iterator index)
DistributedVectorFactory * GetFactory()
Stripe(DistributedVector parallelVec, unsigned stripe)
DistributedVectorFactory * mpFactory
unsigned GetHigh() const
unsigned GetLow() const
double & operator[](unsigned globalIndex)
bool IsGlobalIndexLocal(unsigned globalIndex)
DistributedVectorFactory * GetFactory()
DistributedVectorFactory * mpFactory