/usr/include/vtk-7.1/VPIC/GridExchange.h is in libvtk7-dev 7.1.1+dfsg1-2.
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Copyright (c) 2007, Los Alamos National Security, LLC
All rights reserved.
Copyright 2007. Los Alamos National Security, LLC.
This software was produced under U.S. Government contract DE-AC52-06NA25396
for Los Alamos National Laboratory (LANL), which is operated by
Los Alamos National Security, LLC for the U.S. Department of Energy.
The U.S. Government has rights to use, reproduce, and distribute this software.
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EXPRESS OR IMPLIED, OR ASSUMES ANY LIABILITY FOR THE USE OF THIS SOFTWARE.
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from LANL.
Additionally, redistribution and use in source and binary forms, with or
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are met:
- Redistributions of source code must retain the above copyright notice,
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// .NAME GridExchange - Send my data portions of grid on one processor to
// become ghost portion of grid on a neighbor
//
// .SECTION Description
// GridExchange will take a pointer to contiguous memory, the size of
// memory in each dimension, and the amount of ghost grid information
// to be shared on the front and back of every dimension. From this
// GridExchange can calculate what part of the contiguous memory must be
// packed to share with each of the neighbors, and what part of its own
// memory must be used to unpack similar information from each neighbor.
//
// This can be accomplished by recording for every neighbor the send
// origin and send size, the receive origin and receive size.
//
#ifndef GridExchange_h
#define GridExchange_h
#include "VPICDefinition.h"
using namespace std;
class VPIC_EXPORT GridExchange {
public:
GridExchange(
int rank, // Rank of this processor
int total, // Total processors (needed to find neighbors)
int* decomp, // Decomposition of processor in problem
int* size, // Size of total space to exchange
int ghost0, // Ghost cell count on the front plane
int ghost1); // Ghost cell count on the back plane
// ParaView wants overlap of 1 cell always
// so with a ghost in each direction overlap
// becomes 3 so ghost overlap on front plane
// will be 1 and on the back plane will be 2
~GridExchange();
// Calculate the offsets and sizes for send and receive to neighbors
void initialize();
// Set the processor neighbors of this processor
void setNeighbors();
void setSendOrigin(int Neighbor, int x, int y, int z);
void setRecvOrigin(int Neighbor, int x, int y, int z);
void setSendSize(int Neighbor, int x, int y, int z);
void setRecvSize(int Neighbor, int x, int y, int z);
// Exchange sections of a grid with all neighbors
void exchangeGrid(GRID_T* data);
void exchange(
int sendTo, // Neighbor to send particles to
int recvFrom, // Neighbor to receive particles from
GRID_T* data); // Grid to share
private:
int myProc; // My processor number
int numProc; // Total number of processors
int layoutSize[DIMENSION]; // Decomposition of processors
int layoutPos[DIMENSION]; // Position of this processor in decomposition
int*** layoutID; // Layout of all processors
int bufferSize; // Max message size to send/receive
GRID_T* sendBuffer; // Message buffer
GRID_T* recvBuffer; // Message buffer
int totalSize[DIMENSION]; // Sizes with mine and ghost grids
int mine[DIMENSION]; // Sizes of only my grid
int ghost0; // Ghost grid size on front planes
int ghost1; // Ghost grid size on back planes
// Processor id for each neighbor
int neighbor[NUM_OF_NEIGHBORS];
// Region of data to send to each neighbor
int sendOrigin[NUM_OF_NEIGHBORS][DIMENSION];
int sendSize[NUM_OF_NEIGHBORS][DIMENSION];
// Region of data to receive from each neighbor
int recvOrigin[NUM_OF_NEIGHBORS][DIMENSION];
int recvSize[NUM_OF_NEIGHBORS][DIMENSION];
};
#endif
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