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VPICView.cxx
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VPICView.cxx
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#include "VPICView.h"
#include "VPICGlobal.h"
#include <sys/types.h>
#include <set>
#include <sstream>
#include <iomanip>
#include <algorithm>
#include "math.h"
#ifdef _WIN32
const static char * Slash = "\\";
#else
const static char * Slash = "/";
#endif
//////////////////////////////////////////////////////////////////////////////
//
// Structure for view of VPIC data file components
//
//////////////////////////////////////////////////////////////////////////////
VPICView::VPICView(int r, int t, VPICGlobal& dsGlobal) :
rank(r),
totalRank(t),
global(dsGlobal),
calculateGridNeeded(true)
{
for (int i = 0; i < DIMENSION; ++i)
{
this->stride[i] = 1;
}
}
//////////////////////////////////////////////////////////////////////////////
//
// Destructor
//
//////////////////////////////////////////////////////////////////////////////
VPICView::~VPICView()
{
for (int i = 0; i < this->layoutSize[0]; i++) {
for (int j = 0; j < this->layoutSize[1]; j++) {
delete [] this->layoutID[i][j];
}
delete [] this->layoutID[i];
}
delete [] this->layoutID;
for (int i = 0; i < this->totalRank; i++) {
delete [] this->range[i];
delete [] this->subextent[i];
delete [] this->subdimension[i];
}
delete [] this->range;
delete [] this->subextent;
delete [] this->subdimension;
for (int i = 0; i < this->numberOfMyParts; i++)
delete this->myParts[i];
}
//////////////////////////////////////////////////////////////////////////////
//
// Initialize a view with the layoutSize which is number of files in each
// dimension, the layoutID matrix corresponding to the layout, and the
// stride over this view
//
//////////////////////////////////////////////////////////////////////////////
void VPICView::initialize(
int timeStep,
int* dsLayoutSize,
int*** dsLayoutID,
int* dsPartSize,
float* dsPhysicalOrigin,
float* dsPhysicalStep)
{
// View uses the current time step
this->currentTimeStep = timeStep;
// Size specific information for this view
for (int dim = 0; dim < DIMENSION; dim++) {
this->layoutSize[dim] = dsLayoutSize[dim];
this->partSize[dim] = dsPartSize[dim];
this->physicalOrigin[dim] = dsPhysicalOrigin[dim];
this->physicalStep[dim] = dsPhysicalStep[dim];
int gridCount = this->layoutSize[dim] * this->partSize[dim];
this->physicalSize[dim] = gridCount * this->physicalStep[dim];
}
// Allocate the partition ID table with one entry for every file
this->layoutID = new int**[this->layoutSize[0]];
for (int i = 0; i < this->layoutSize[0]; i++) {
this->layoutID[i] = new int*[this->layoutSize[1]];
for (int j = 0; j < this->layoutSize[1]; j++)
this->layoutID[i][j] = new int[this->layoutSize[2]];
}
for (int k = 0; k < this->layoutSize[2]; k++)
for (int j = 0; j < this->layoutSize[1]; j++)
for (int i = 0; i < this->layoutSize[0]; i++)
this->layoutID[i][j][k] = dsLayoutID[i][j][k];
// Partition graphics processors across this view
partitionFiles();
}
//////////////////////////////////////////////////////////////////////////////
//
// Given the already built file layout table and the number of processors
// to partition the display across and the number of this processor,
// assign parts and set part offsets within the processor's subextent
//
//////////////////////////////////////////////////////////////////////////////
void VPICView::partitionFiles()
{
// First and last index into partition table for each processor
this->range = new int*[this->totalRank];
this->subextent = new int*[this->totalRank];
this->subdimension = new int*[this->totalRank];
for (int piece = 0; piece < this->totalRank; piece++) {
this->range[piece] = new int[DIMENSION*2];
this->subextent[piece] = new int[DIMENSION*2];
this->subdimension[piece] = new int[DIMENSION];
for (int i = 0; i < DIMENSION*2; i++) {
this->range[piece][i] = -1;
this->subextent[piece][i] = 0;
}
}
/*
if (this->rank == 0) {
cout << endl << "New partition of files" << endl;
cout << "File grid size: ["
<< this->partSize[0] << ","
<< this->partSize[1] << ","
<< this->partSize[2] << "]" << endl;
cout << "Simulation decomposition: ["
<< this->layoutSize[0] << ","
<< this->layoutSize[1] << ","
<< this->layoutSize[2] << "]" << endl;
}
*/
// Partition graphics processors over the file decomposition
partition();
// Decomposition ranges indicate the index number of the name of
// the file which is read on a particular processor
string* partFileNames = new string[this->global.getNumberOfDirectories()];
// Relative offset of part within one processor for calculating the grid
// offset to place data at for display
int iindx, jindx, kindx;
kindx = 0;
// If the partitioned range has -1 in it, this processor is not used
if (this->range[this->rank][0] != -1) {
for (int k = this->range[this->rank][4];
k <= this->range[this->rank][5]; k++, kindx++) {
jindx = 0;
for (int j = this->range[this->rank][2];
j <= this->range[this->rank][3]; j++, jindx++) {
iindx = 0;
for (int i = this->range[this->rank][0];
i <= this->range[this->rank][1]; i++, iindx++) {
// Create the VPICPart for this processor which will have the
// file names containing data for its part of the total and
// will have its offset within one graphics processor so that
// data is read into the correct spot
int part = this->layoutID[i][j][k];
getPartFileNames(partFileNames, this->currentTimeStep, part);
VPICPart* vpicPart = new VPICPart(part);
vpicPart->setFiles(partFileNames,
this->global.getNumberOfDirectories());
vpicPart->initialize();
vpicPart->setVizID(this->rank);
vpicPart->setPartOffset(iindx, jindx, kindx);
this->myParts.push_back(vpicPart);
}
}
}
}
this->numberOfMyParts = static_cast<int>(this->myParts.size());
delete [] partFileNames;
}
//////////////////////////////////////////////////////////////////////////////
//
// Partition files into the number of processors
//
//////////////////////////////////////////////////////////////////////////////
void VPICView::partition()
{
int totalParts = 1;
for (int dim = 0; dim < DIMENSION; dim++)
totalParts *= this->layoutSize[dim];
// One graphics processor gets entire range
for (int dim = 0; dim < DIMENSION; dim++)
this->decomposition[dim] = 1;
// More than one graphics processors
if (this->totalRank > 1) {
// Number of graphics processor is <= number of parts
if (totalParts <= this->totalRank) {
for (int dim = 0; dim < DIMENSION; dim++)
this->decomposition[dim] = this->layoutSize[dim];
}
// Number of graphics processors is > number of parts
else {
int rangeSize[DIMENSION];
for (int dim = 0; dim < DIMENSION; dim++)
rangeSize[dim] = this->layoutSize[dim];
int gcd[DIMENSION];
int processorFactor = this->totalRank;
bool done = false;
// Use greatest common divisor to factor processors and decomposition
while (processorFactor > 1 && done == false) {
int maxGCD = 1;
int maxGCDdim = 0;
for (int dim = 0; dim < DIMENSION; dim++) {
gcd[dim] = GCD(rangeSize[dim], processorFactor);
if (gcd[dim] > maxGCD) {
maxGCD = gcd[dim];
maxGCDdim = dim;
}
}
if (maxGCD == 1)
done = true;
// Apply the GCD to the number of processor and selected dimension
processorFactor /= maxGCD;
this->decomposition[maxGCDdim] *= maxGCD;
rangeSize[maxGCDdim] = rangeSize[maxGCDdim] / maxGCD;
}
// If only divisor is 1 then divide unevenly
if (processorFactor > 1) {
// Choose the largest part dimension for the remaining processors
int maxDim = 0;
int maxSize = rangeSize[0];
for (int dim = 1; dim < DIMENSION; dim++) {
if (rangeSize[dim] > maxSize) {
maxSize = rangeSize[dim];
maxDim = dim;
}
}
this->decomposition[maxDim] *= processorFactor;
}
// Make sure processoLayout is not larger than file layoutSize
for (int dim = 0; dim < DIMENSION; dim++)
if (this->decomposition[dim] > layoutSize[dim])
this->decomposition[dim] = layoutSize[dim];
}
}
/*
if (this->rank == 0) {
cout << "Graphics decomposition: ["
<< this->decomposition[0] << ","
<< this->decomposition[1] << ","
<< this->decomposition[2] << "]" << endl;
}
*/
// Using the part partition and the processor partition assign
// part ranges for each processor which will be used for subextents
// Note that the order of processors assigned has to be kept which
// means assigning
// 0 2 1 3
// 4 6 5 7
// in a block will cause trouble at least for EnSight where a row of
// ghost cells will not be correct at the 2-1 6-5 boundary
//
// Calculate the number of files per processor and the number of
// processors that need one more than this for a good distribution
int step[DIMENSION];
int needMore[DIMENSION];
for (int dim = 0; dim < DIMENSION; dim++) {
step[dim] = (int) floor((double) this->layoutSize[dim] /
(double) this->decomposition[dim]);
needMore[dim] = this->layoutSize[dim] -
(step[dim] * this->decomposition[dim]);
}
int zStart = 0;
for (int z = 0; z < this->decomposition[2]; z++) {
int zStep = step[2];
if (z < needMore[2])
zStep++;
int yStart = 0;
for (int y = 0; y < this->decomposition[1]; y++) {
int yStep = step[1];
if (y < needMore[1])
yStep++;
int xStart = 0;
for (int x = 0; x < this->decomposition[0]; x++) {
int xStep = step[0];
if (x < needMore[0])
xStep++;
int proc = z * (this->decomposition[0] * this->decomposition[1]) +
y * this->decomposition[0] + x;
if (proc < totalRank) {
this->range[proc][0] = xStart;
this->range[proc][1] = xStart + xStep - 1;
this->range[proc][2] = yStart;
this->range[proc][3] = yStart + yStep - 1;
this->range[proc][4] = zStart;
this->range[proc][5] = zStart + zStep - 1;
}
xStart += xStep;
}
yStart += yStep;
}
zStart += zStep;
}
}
//////////////////////////////////////////////////////////////////////////////
//
// Partitioning has already been done so calculate grid extents for this
// processor with the given stride, and calculate the offset of each part
// within this processor's subextent of the total grid
//
//////////////////////////////////////////////////////////////////////////////
void VPICView::calculateGridExtents()
{
// Reset to false so this won't execute unless the stride changes
this->calculateGridNeeded = false;
// Calculate the total grid, processor grid and part grid for the
// current stride. Since we want processors to continue to control
// only their files start at the part level to calculate the grid and
// multiply to get the higher level grid sizes.
int stridedPartSize[DIMENSION];
for (int dim = 0; dim < DIMENSION; dim++)
stridedPartSize[dim] = this->partSize[dim] / this->stride[dim];
// Total problem grid
this->numberOfCells = 1;
this->numberOfCellsWithGhosts = 1;
this->numberOfNodes = 1;
for (int dim = 0; dim < DIMENSION; dim++) {
this->gridSize[dim] = stridedPartSize[dim] * this->layoutSize[dim];
this->ghostSize[dim] = this->gridSize[dim] + 2;
this->physicalStep[dim] = this->physicalSize[dim] /
this->gridSize[dim];
this->numberOfCells *= this->gridSize[dim];
this->numberOfCellsWithGhosts *= this->ghostSize[dim];
this->numberOfNodes *= (this->gridSize[dim] + 1);
}
// At this point we have a range partition for each processor
// Find the subextent for every processor within the range
// Take into account the stride on the regular (non ghost) data
for (int piece = 0; piece < this->totalRank; piece++) {
for (int dim = 0; dim < DIMENSION; dim++) {
int first = dim * 2;
int last = first + 1;
if (this->range[piece][first] == -1) {
this->subextent[piece][first] = 0;
this->subextent[piece][last] = 0;
this->subdimension[piece][dim] = 0;
} else {
this->subextent[piece][first] =
this->range[piece][first] * stridedPartSize[dim];
this->subextent[piece][last] =
(this->range[piece][last] + 1) * stridedPartSize[dim];
if (this->subextent[piece][first] < 0)
this->subextent[piece][first] = 0;
if (this->subextent[piece][last] >= this->gridSize[dim])
this->subextent[piece][last] = this->gridSize[dim] - 1;
this->subdimension[piece][dim] = this->subextent[piece][last] -
this->subextent[piece][first] + 1;
}
}
}
// Each part calculates where it fits in the overall grid for processor
// Must take into account the stride which affects the offset in subgrid
for (int i = 0; i < this->numberOfMyParts; i++)
this->myParts[i]->calculatePartLocation(stridedPartSize);
}
//////////////////////////////////////////////////////////////////////////////
//
// Load the variable data for the given time step for this processor
// Each processor has many file parts which supply pieces of data
// Have each file part load into the overall data block by using its
// offset into that data block. Each data part has a set format but
// in order to do different time steps, change the name of the file
// which is to be accessed
//
//////////////////////////////////////////////////////////////////////////////
void VPICView::loadVariableData(
float* varData,
int varOffset,
int* _subdimension,
int timeStep,
int var,
int comp)
{
// Change the files in my VPICParts if the time step has changed
if (timeStep != this->currentTimeStep) {
this->currentTimeStep = timeStep;
// Each part will access a file for field and one for each species
string* partFileNames = new string[this->global.getNumberOfDirectories()];
for (int part = 0; part < this->numberOfMyParts; part++) {
int id = this->myParts[part]->getSimID();
getPartFileNames(partFileNames, this->currentTimeStep, id);
this->myParts[part]->setFiles(partFileNames,
this->global.getNumberOfDirectories());
}
delete [] partFileNames;
}
// Read the variable data from file and store into overall var_array
// Load the appropriate part of the data from the part
for (int part = 0; part < this->numberOfMyParts; part++) {
this->myParts[part]->loadVariableData(
varData,
varOffset,
_subdimension,
this->global.getVariableKind(var),
this->global.getVariableType(var),
this->global.getVariableByteCount(var),
this->global.getVariableOffset(var, comp),
stride);
}
}
//////////////////////////////////////////////////////////////////////////////
//
// Set an array of file names for a specific part to access fields and
// all species
//
//////////////////////////////////////////////////////////////////////////////
void VPICView::getPartFileNames(string* partFileName, int timeStep, int part)
{
int timeFieldLen = this->global.getTimeFieldLen();
int procFieldLen = this->global.getProcFieldLen();
int dumpTime = this->global.getDumpTime(timeStep);
string dumpName = this->global.getDumpName(timeStep);
for (int i = 0; i < this->global.getNumberOfDirectories(); i++) {
ostringstream name;
name << this->global.getDirectoryName(i)
<< dumpName << Slash
<< this->global.getBaseFileName(i) << ".";
if (timeFieldLen == 1)
name << dumpTime << ".";
else
name << setw(timeFieldLen) << setfill('0') << dumpTime << ".";
if (procFieldLen == 1)
name << part;
else
name << setw(procFieldLen) << setfill('0') << part;
partFileName[i] = name.str();
}
}
//////////////////////////////////////////////////////////////////////////////
//
// Access methods
//
//////////////////////////////////////////////////////////////////////////////
void VPICView::getDecomposition(int decomp[])
{
for (int dim = 0; dim < DIMENSION; dim++)
decomp[dim] = this->decomposition[dim];
}
void VPICView::getGridSize(int gridsize[])
{
for (int dim = 0; dim < DIMENSION; dim++)
gridsize[dim] = this->gridSize[dim];
}
void VPICView::getLayoutSize(int layout[])
{
for (int dim = 0; dim < DIMENSION; dim++)
layout[dim] = this->layoutSize[dim];
}
void VPICView::getOrigin(float origin[])
{
for (int dim = 0; dim < DIMENSION; dim++)
origin[dim] = this->physicalOrigin[dim];
}
void VPICView::getOrigin(double origin[])
{
for (int dim = 0; dim < DIMENSION; dim++)
origin[dim] = (double) this->physicalOrigin[dim];
}
void VPICView::getStep(float step[])
{
for (int dim = 0; dim < DIMENSION; dim++)
step[dim] = this->physicalStep[dim];
}
void VPICView::getStep(double step[])
{
for (int dim = 0; dim < DIMENSION; dim++)
step[dim] = (double) this->physicalStep[dim];
}
void VPICView::getPhysicalExtent(float extent[])
{
for (int dim = 0; dim < DIMENSION; dim++) {
extent[dim*2] = this->physicalOrigin[dim];
extent[dim*2+1] = this->physicalOrigin[dim] +
(this->gridSize[dim] * this->physicalStep[dim]);
}
}
void VPICView::getPhysicalExtent(double extent[])
{
for (int dim = 0; dim < DIMENSION; dim++) {
extent[dim*2] = (double) this->physicalOrigin[dim];
extent[dim*2+1] = (double) (this->physicalOrigin[dim] +
(this->gridSize[dim] * this->physicalStep[dim]));
}
}
void VPICView::getWholeExtent(int extent[])
{
for (int dim = 0; dim < DIMENSION; dim++) {
extent[dim*2] = 0;
extent[dim*2+1] = this->gridSize[dim] - 1;
}
}
void VPICView::getSubExtent(int piece, int extent[])
{
for (int ext = 0; ext < 6; ext++)
extent[ext] = this->subextent[piece][ext];
}
void VPICView::getSubDimension(int piece, int dimension[])
{
for (int dim = 0; dim < DIMENSION; dim++)
dimension[dim] = this->subdimension[piece][dim];
}
//////////////////////////////////////////////////////////////////////////////
//
// Reset the stride and set flag to indicate repartition is needed to
// calculate new extents
//
//////////////////////////////////////////////////////////////////////////////
void VPICView::setStride(int s[])
{
// Stride was not changed
if (this->stride[0] == s[0] &&
this->stride[1] == s[1] &&
this->stride[2] == s[2])
return;
int oldStride[DIMENSION];
for (int dim = 0; dim < DIMENSION; dim++)
oldStride[dim] = this->stride[dim];
// Since we stride on individual file parts make sure requested stride fits
for (int dim = 0; dim < DIMENSION; dim++) {
this->stride[dim] = s[dim];
if (s[dim] > this->partSize[dim])
this->stride[dim] = this->partSize[dim];
}
if (oldStride[0] != this->stride[0] ||
oldStride[1] != this->stride[1] ||
oldStride[2] != this->stride[2])
this->calculateGridNeeded = true;
/*
if (this->rank == 0)
cout << "Stride set to (" << this->stride[0] << ","
<< this->stride[1] << "," << this->stride[2] << ")" << endl;
*/
}
//////////////////////////////////////////////////////////////////////////////
//
// Print information about the data set
//
//////////////////////////////////////////////////////////////////////////////
void VPICView::PrintSelf(ostream& os, int vpicNotUsed(indent))
{
if (this->rank == 0) {
os << endl;
os << "Stride: [" << this->stride[0] << "," << this->stride[1] << ","
<< this->stride[2] << "]" << endl << endl;
}
}