void SliceMD::slice(typename MDEventWorkspace<MDE, nd>::sptr ws) {
// Create the ouput workspace
typename MDEventWorkspace<OMDE, ond>::sptr outWS(
new MDEventWorkspace<OMDE, ond>());
for (size_t od = 0; od < m_binDimensions.size(); od++) {
outWS->addDimension(m_binDimensions[od]);
}
outWS->setCoordinateSystem(ws->getSpecialCoordinateSystem());
outWS->initialize();
// Copy settings from the original box controller
BoxController_sptr bc = ws->getBoxController();
// store wrute buffer size for the future
// uint64_t writeBufSize =
// bc->getFileIO()getDiskBuffer().getWriteBufferSize();
// and disable write buffer (if any) for input MD Events for this algorithm
// purposes;
// bc->setCacheParameters(1,0);
BoxController_sptr obc = outWS->getBoxController();
// Use the "number of bins" as the "split into" parameter
for (size_t od = 0; od < m_binDimensions.size(); od++)
obc->setSplitInto(od, m_binDimensions[od]->getNBins());
obc->setSplitThreshold(bc->getSplitThreshold());
bool bTakeDepthFromInputWorkspace =
getProperty("TakeMaxRecursionDepthFromInput");
int tempDepth = getProperty("MaxRecursionDepth");
size_t maxDepth =
bTakeDepthFromInputWorkspace ? bc->getMaxDepth() : size_t(tempDepth);
obc->setMaxDepth(maxDepth);
// size_t outputSize = writeBufSize;
// obc->setCacheParameters(sizeof(OMDE),outputSize);
obc->resetNumBoxes();
// Perform the first box splitting
outWS->splitBox();
size_t lastNumBoxes = obc->getTotalNumMDBoxes();
// --- File back end ? ----------------
std::string filename = getProperty("OutputFilename");
if (!filename.empty()) {
// First save to the NXS file
g_log.notice() << "Running SaveMD to create file back-end" << std::endl;
IAlgorithm_sptr alg = createChildAlgorithm("SaveMD");
alg->setPropertyValue("Filename", filename);
alg->setProperty("InputWorkspace", outWS);
alg->setProperty("MakeFileBacked", true);
alg->executeAsChildAlg();
if (!obc->isFileBacked())
throw std::runtime_error("SliceMD with file-backed output: Can not set "
"up file-backed output workspace ");
auto IOptr = obc->getFileIO();
size_t outBufSize = IOptr->getWriteBufferSize();
// the buffer size for resulting workspace; reasonable size is at least 10
// data chunk sizes (nice to verify)
if (outBufSize < 10 * IOptr->getDataChunk()) {
outBufSize = 10 * IOptr->getDataChunk();
IOptr->setWriteBufferSize(outBufSize);
}
}
// Function defining which events (in the input dimensions) to place in the
// output
MDImplicitFunction *function = this->getImplicitFunctionForChunk(NULL, NULL);
std::vector<API::IMDNode *> boxes;
// Leaf-only; no depth limit; with the implicit function passed to it.
ws->getBox()->getBoxes(boxes, 1000, true, function);
// Sort boxes by file position IF file backed. This reduces seeking time,
// hopefully.
bool fileBackedWS = bc->isFileBacked();
if (fileBackedWS)
API::IMDNode::sortObjByID(boxes);
Progress *prog = new Progress(this, 0.0, 1.0, boxes.size());
// The root of the output workspace
MDBoxBase<OMDE, ond> *outRootBox = outWS->getBox();
// if target workspace has events, we should count them as added
uint64_t totalAdded = outWS->getNEvents();
uint64_t numSinceSplit = 0;
// Go through every box for this chunk.
// PARALLEL_FOR_IF( !bc->isFileBacked() )
for (int i = 0; i < int(boxes.size()); i++) {
MDBox<MDE, nd> *box = dynamic_cast<MDBox<MDE, nd> *>(boxes[i]);
// Perform the binning in this separate method.
if (box) {
// An array to hold the rotated/transformed coordinates
coord_t outCenter[ond];
const std::vector<MDE> &events = box->getConstEvents();
typename std::vector<MDE>::const_iterator it = events.begin();
typename std::vector<MDE>::const_iterator it_end = events.end();
for (; it != it_end; it++) {
// Cache the center of the event (again for speed)
const coord_t *inCenter = it->getCenter();
if (function->isPointContained(inCenter)) {
// Now transform to the output dimensions
m_transformFromOriginal->apply(inCenter, outCenter);
// Create the event
OMDE newEvent(it->getSignal(), it->getErrorSquared(), outCenter);
// Copy extra data, if any
copyEvent(*it, newEvent);
// Add it to the workspace
outRootBox->addEvent(newEvent);
numSinceSplit++;
}
}
box->releaseEvents();
// Ask BC if one needs to split boxes
if (obc->shouldSplitBoxes(totalAdded, numSinceSplit, lastNumBoxes))
// if (numSinceSplit > 20000000 || (i == int(boxes.size()-1)))
{
// This splits up all the boxes according to split thresholds and sizes.
Kernel::ThreadScheduler *ts = new ThreadSchedulerFIFO();
ThreadPool tp(ts);
outWS->splitAllIfNeeded(ts);
tp.joinAll();
// Accumulate stats
totalAdded += numSinceSplit;
numSinceSplit = 0;
lastNumBoxes = obc->getTotalNumMDBoxes();
// Progress reporting
if (!fileBackedWS)
prog->report(i);
}
if (fileBackedWS) {
if (!(i % 10))
prog->report(i);
}
} // is box
} // for each box in the vector
prog->report();
outWS->splitAllIfNeeded(NULL);
// Refresh all cache.
outWS->refreshCache();
g_log.notice() << totalAdded << " " << OMDE::getTypeName()
<< "'s added to the output workspace." << std::endl;
if (outWS->isFileBacked()) {
// Update the file-back-end
g_log.notice() << "Running SaveMD" << std::endl;
IAlgorithm_sptr alg = createChildAlgorithm("SaveMD");
alg->setProperty("UpdateFileBackEnd", true);
alg->setProperty("InputWorkspace", outWS);
alg->executeAsChildAlg();
}
// return the size of the input workspace write buffer to its initial value
// bc->setCacheParameters(sizeof(MDE),writeBufSize);
this->setProperty("OutputWorkspace",
boost::dynamic_pointer_cast<IMDEventWorkspace>(outWS));
delete prog;
}
void LoadMD::doLoad(typename MDEventWorkspace<MDE, nd>::sptr ws) {
// Are we using the file back end?
bool fileBackEnd = getProperty("FileBackEnd");
if (fileBackEnd && m_BoxStructureAndMethadata)
throw std::invalid_argument("Combination of BoxStructureOnly or "
"MetaDataOnly were set to TRUE with "
"fileBackEnd "
": this is not possible.");
CPUTimer tim;
auto prog = new Progress(this, 0.0, 1.0, 100);
prog->report("Opening file.");
std::string title;
try {
m_file->getAttr("title", title);
} catch (std::exception &) {
// Leave the title blank if error on loading
}
ws->setTitle(title);
// Load the WorkspaceHistory "process"
if (this->getProperty("LoadHistory")) {
ws->history().loadNexus(m_file.get());
}
this->loadAffineMatricies(boost::dynamic_pointer_cast<IMDWorkspace>(ws));
m_file->closeGroup();
m_file->close();
// Add each of the dimension
for (size_t d = 0; d < nd; d++)
ws->addDimension(m_dims[d]);
// Coordinate system
ws->setCoordinateSystem(m_coordSystem);
// ----------------------------------------- Box Structure
// ------------------------------
prog->report("Reading box structure from HDD.");
MDBoxFlatTree FlatBoxTree;
int nDims = static_cast<int>(nd); // should be safe
FlatBoxTree.loadBoxStructure(m_filename, nDims, MDE::getTypeName());
BoxController_sptr bc = ws->getBoxController();
bc->fromXMLString(FlatBoxTree.getBCXMLdescr());
prog->report("Restoring box structure and connectivity");
std::vector<API::IMDNode *> boxTree;
FlatBoxTree.restoreBoxTree(boxTree, bc, fileBackEnd,
m_BoxStructureAndMethadata);
size_t numBoxes = boxTree.size();
// ---------------------------------------- DEAL WITH BOXES
// ------------------------------------
if (fileBackEnd) { // TODO:: call to the file format factory
auto loader = boost::shared_ptr<API::IBoxControllerIO>(
new DataObjects::BoxControllerNeXusIO(bc.get()));
loader->setDataType(sizeof(coord_t), MDE::getTypeName());
bc->setFileBacked(loader, m_filename);
// boxes have been already made file-backed when restoring the boxTree;
// How much memory for the cache?
{
// TODO: Clean up, only a write buffer now
double mb = getProperty("Memory");
// Defaults have changed, default disk buffer size should be 10 data
// chunks TODO: find optimal, 100 may be better.
if (mb <= 0)
mb = double(10 * loader->getDataChunk() * sizeof(MDE)) /
double(1024 * 1024);
// Express the cache memory in units of number of events.
uint64_t cacheMemory =
static_cast<uint64_t>((mb * 1024. * 1024.) / sizeof(MDE)) + 1;
// Set these values in the diskMRU
bc->getFileIO()->setWriteBufferSize(cacheMemory);
g_log.information() << "Setting a DiskBuffer cache size of " << mb
<< " MB, or " << cacheMemory << " events.\n";
}
} // Not file back end
else if (!m_BoxStructureAndMethadata) {
// ---------------------------------------- READ IN THE BOXES
// ------------------------------------
// TODO:: call to the file format factory
auto loader =
file_holder_type(new DataObjects::BoxControllerNeXusIO(bc.get()));
loader->setDataType(sizeof(coord_t), MDE::getTypeName());
loader->openFile(m_filename, "r");
const std::vector<uint64_t> &BoxEventIndex = FlatBoxTree.getEventIndex();
prog->setNumSteps(numBoxes);
for (size_t i = 0; i < numBoxes; i++) {
prog->report();
MDBox<MDE, nd> *box = dynamic_cast<MDBox<MDE, nd> *>(boxTree[i]);
if (!box)
continue;
if (BoxEventIndex[2 * i + 1] >
0) // Load in memory NOT using the file as the back-end,
{
boxTree[i]->reserveMemoryForLoad(BoxEventIndex[2 * i + 1]);
boxTree[i]->loadAndAddFrom(
loader.get(), BoxEventIndex[2 * i],
static_cast<size_t>(BoxEventIndex[2 * i + 1]));
}
}
loader->closeFile();
} else // box structure and metadata only
{
}
g_log.debug() << tim
<< " to create all the boxes and fill them with events.\n";
// Box of ID 0 is the head box.
ws->setBox(boxTree[0]);
// Make sure the max ID is ok for later ID generation
bc->setMaxId(numBoxes);
// end-of bMetaDataOnly
// Refresh cache
// TODO:if(!fileBackEnd)ws->refreshCache();
ws->refreshCache();
g_log.debug() << tim << " to refreshCache(). " << ws->getNPoints()
<< " points after refresh.\n";
g_log.debug() << tim << " to finish up.\n";
delete prog;
}