DistributedVector::Chunk Class Reference

#include <DistributedVector.hpp>

Collaboration diagram for DistributedVector::Chunk:

Public Member Functions
	Chunk (DistributedVector parallelVec, unsigned chunk)
double &	operator[] (unsigned globalIndex)
double &	operator[] (Iterator index)

Private Attributes
unsigned	mOffset
double *	mpVec
unsigned	mLo
unsigned	mHi

Detailed Description

Provide access to a particular chunk of a chunked vector.

A chunked vector has multiple types of information encoded within a single vector, with a layout like [x_1, x_2, ..., x_n, y_1, y_2, ... y_n]. This class provides easy access to, for example, the x values.

Definition at line 263 of file DistributedVector.hpp.

Constructor & Destructor Documentation

Chunk()

DistributedVector::Chunk::Chunk ( DistributedVector  parallelVec, unsigned  chunk  )

inline

Constructor.

Parameters

parallelVec	chunked vector
chunk	number of this chunk within the vector starting from 0

Definition at line 277 of file DistributedVector.hpp.

References DistributedVector::GetHigh(), DistributedVector::GetLow(), mHi, mLo, mOffset, DistributedVector::mpVec, mpVec, and DistributedVector::mSizeMultiplier.

Member Function Documentation

operator[]() [1/2]

double & DistributedVector::Chunk::operator[] ( Iterator  index )

inline

Parameters

index

Returns

value of striped distributed vector pointed to by index.

Definition at line 308 of file DistributedVector.hpp.

References mOffset, and mpVec.

operator[]() [2/2]

double & DistributedVector::Chunk::operator[] ( unsigned  globalIndex )

inline

Access a particular element of the chunk if on this processor. For use in tests. Will throw a DistributedVectorException if the specified element is not on this process.

Parameters

globalIndex

index within the chunk

Returns

value of striped vector

Definition at line 294 of file DistributedVector.hpp.

References mHi, mLo, mOffset, and mpVec.

Member Data Documentation

mHi

unsigned DistributedVector::Chunk::mHi

private

One above the last entry owned by the current processor.

Definition at line 268 of file DistributedVector.hpp.

Referenced by Chunk(), and operator[]().

mLo

unsigned DistributedVector::Chunk::mLo

private

The first entry owned by the current processor.

Definition at line 267 of file DistributedVector.hpp.

Referenced by Chunk(), and operator[]().

mOffset

unsigned DistributedVector::Chunk::mOffset

private

The start of this chunk within the locally-owned part of the vector.

Definition at line 265 of file DistributedVector.hpp.

Referenced by Chunk(), operator[](), and operator[]().

mpVec

double* DistributedVector::Chunk::mpVec

private

The local part of the underlying PETSc vector.

Definition at line 266 of file DistributedVector.hpp.

Referenced by Chunk(), operator[](), and operator[]().

---

The documentation for this class was generated from the following file:

• global/src/parallel/DistributedVector.hpp