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Diffstat (limited to 'ext/dsent/model/optical/SWMRLink.cc')
| -rw-r--r-- | ext/dsent/model/optical/SWMRLink.cc | 309 |
1 files changed, 309 insertions, 0 deletions
diff --git a/ext/dsent/model/optical/SWMRLink.cc b/ext/dsent/model/optical/SWMRLink.cc new file mode 100644 index 000000000..56d2d70b3 --- /dev/null +++ b/ext/dsent/model/optical/SWMRLink.cc @@ -0,0 +1,309 @@ +#include "model/optical/SWMRLink.h" + +#include "model/PortInfo.h" +#include "model/TransitionInfo.h" +#include "model/EventInfo.h" +#include "model/optical_graph/OpticalGraph.h" +#include "model/optical_graph/OpticalWaveguide.h" +#include "model/optical/RingModulator.h" +#include "model/optical/RingFilter.h" +#include "model/optical/RingDetector.h" +#include "model/optical/LaserSource.h" +#include "model/optical/ThrottledLaserSource.h" + +namespace DSENT +{ + SWMRLink::SWMRLink(const String& instance_name_, const TechModel* tech_model_) + : OpticalModel(instance_name_, tech_model_) + { + initParameters(); + initProperties(); + } + + SWMRLink::~SWMRLink() + {} + + void SWMRLink::initParameters() + { + addParameterName("NumberReaders"); + addParameterName("NumberWavelengths"); + addParameterName("DataRate"); + addParameterName("LaserType"); + addParameterName("MaxReaders"); + addParameterName("MinReaders"); + addParameterName("OptimizeLoss", "TRUE"); + return; + } + + void SWMRLink::initProperties() + { + addPropertyName("Length"); + addPropertyName("OptUtil", 0.5); // default to 50% utilization (a new word 50% of the time) + addPropertyName("ExtinctionRatio", 6); // default properties + addPropertyName("InsertionLoss", 2); // default properties + return; + } + + void SWMRLink::constructModel() + { + // Get parameters + unsigned int number_wavelengths = getParameter("NumberWavelengths"); + unsigned int number_readers = getParameter("NumberReaders"); + unsigned int number_max_readers = std::min(number_readers, getParameter("MaxReaders").toUInt()); + unsigned int number_min_readers = std::min(number_max_readers, getParameter("MinReaders").toUInt()); + + // Create electrical ports + createInputPort("CK"); + createInputPort("In", makeNetIndex(0, number_wavelengths-1)); + for (unsigned int i = 0; i < number_readers; ++i) + createOutputPort("Out" + (String) i, makeNetIndex(0, number_wavelengths-1)); + + // Create Waveguides + // Temporarily assume its all on one waveguide + createWaveguide("LaserToMod", makeWavelengthGroup(0, number_wavelengths-1)); + for (unsigned int i = 0; i <= number_readers; ++i) + createWaveguide("WaveguideSegment[" + (String) i + "]", makeWavelengthGroup(0, number_wavelengths-1)); + + // Add area results + addAreaResult(new Result("Photonic")); + createElectricalResults(); + // Setup idle event + getEventInfo("Idle")->setStaticTransitionInfos(); + // Create a waveguide area result + addAreaResult(new AtomicResult("Waveguide")); + getAreaResult("Photonic")->addSubResult(getAreaResult("Waveguide"), "Waveguide", 1.0); + // Add results + addNddPowerResult(new Result("Laser")); + // Add event result + createElectricalEventResult("BroadcastFlit"); + + for (unsigned int i = number_min_readers; i <= number_max_readers; ++i) + createElectricalEventResult("MulticastFlit" + (String) i); + + buildLaser(); + buildModulator(); + buildDetectors(); + + return; + } + + void SWMRLink::updateModel() + { + // Get parameters + double data_rate = getParameter("DataRate"); + unsigned int number_readers = getParameter("NumberReaders"); + + // Get properties + double length = getProperty("Length"); + const String& extinction_ratio = getProperty("ExtinctionRatio"); + const String& insertion_loss = getProperty("InsertionLoss"); + const double opt_util = getProperty("OptUtil"); + + // Calculate loss for each waveguide segment + double segment_length = (double) length / number_readers; + double segment_loss = getTechModel()->get("Waveguide->LossPerMeter").toDouble() * segment_length; + // Set loss of each waveguide segment + for (unsigned int i = 0; i < number_readers; ++i) + getWaveguide("WaveguideSegment[" + (String) i + "]")->setLoss(segment_loss); + // Calculate waveguide area + double waveguide_area = length * getTechModel()->get("Waveguide->Pitch").toDouble(); + getAreaResult("Waveguide")->setValue(waveguide_area); + + // Update the laser + Model* laser = getSubInstance("Laser"); + laser->setProperty("LaserEventTime", 1.0 / data_rate); + laser->setProperty("OptUtil", opt_util); + laser->update(); + + // Update the modulator + Model* modulator = getSubInstance("Modulator"); + modulator->setProperty("ExtinctionRatio", extinction_ratio); + modulator->setProperty("InsertionLoss", insertion_loss); + modulator->update(); + + // Update all receivers + for (unsigned int i = 0; i < number_readers; ++i) + { + Model* detector = getSubInstance("Detector_" + (String) i); + detector->update(); + } + + return; + } + + void SWMRLink::propagateTransitionInfo() + { + // Get parameters + const String& laser_type = getParameter("LaserType"); + unsigned int number_readers = getParameter("NumberReaders"); + + // Set transition info for the modulator + OpticalModel* modulator = (OpticalModel*) getSubInstance("Modulator"); + propagatePortTransitionInfo(modulator, "In", "In"); + modulator->use(); + + // Modulator out transition info + const TransitionInfo& mod_out_transitions = modulator->getOpticalOutputPort("Out")->getTransitionInfo(); + + // Set transition info for all receivers + for (unsigned int i = 0; i < number_readers; ++i) + { + OpticalModel* detector = (OpticalModel*) getSubInstance("Detector_" + (String) i); + detector->getOpticalInputPort("In")->setTransitionInfo(mod_out_transitions); + detector->use(); + + // Propagate output transition info to output + propagatePortTransitionInfo("Out" + (String) i, detector, "Out"); + } + + // Set enable signals for the laser, if applicable + if (laser_type == "Throttled") + { + // Figure out how many cycles the laser needs to be on + double cycles = getInputPort("In")->getTransitionInfo().getFrequencyMultiplier(); + + OpticalModel* laser = (OpticalModel*) getSubInstance("Laser"); + laser->getInputPort("LaserEnable")->setTransitionInfo(TransitionInfo(0.0, 1.0, cycles - 1.0)); + laser->use(); + } + return; + } + + void SWMRLink::buildLaser() + { + // Get parameters + unsigned int number_wavelengths = getParameter("NumberWavelengths"); + unsigned int number_readers = getParameter("NumberReaders"); + unsigned int number_max_readers = std::min(number_readers, getParameter("MaxReaders").toUInt()); + unsigned int number_min_readers = std::min(number_max_readers, getParameter("MinReaders").toUInt()); + const String& laser_type = getParameter("LaserType"); + + // Create laser + OpticalModel* laser = NULL; + if (laser_type == "Throttled") + laser = new ThrottledLaserSource("Laser", getTechModel()); + else if (laser_type == "Standard") + laser = new LaserSource("Laser", getTechModel()); + else + ASSERT(false, "[Error] " + getInstanceName() + " -> Unknown laser type '" + laser_type + "'!"); + + laser->setParameter("OutStart", 0); + laser->setParameter("OutEnd", number_wavelengths-1); + laser->setParameter("MaxDetectors", number_max_readers); + laser->setParameter("MinDetectors", number_min_readers); + laser->construct(); + + addSubInstances(laser, 1.0); + getAreaResult("Photonic")->addSubResult(laser->getAreaResult("Photonic"), "Laser", 1.0); + // Connect laser output port + opticalPortConnect(laser, "Out", "LaserToMod"); + + // Without laser gating, laser is pure NDD power + if (laser_type == "Standard") + getNddPowerResult("Laser")->addSubResult(laser->getNddPowerResult("Laser"), "Laser", 1.0); + // With laser power gating, laser is an event + else + { + // If laser is throttled, only pay for the amount needed to reach some number of readers + getEventResult("BroadcastFlit")->addSubResult(laser->getEventResult("Laser" + (String) number_max_readers), "Laser", 1.0); + for (unsigned int i = number_min_readers; i <= number_max_readers; ++i) + getEventResult("MulticastFlit" + (String) i)->addSubResult(laser->getEventResult("Laser" + (String) i), "Laser", 1.0); + } + + return; + } + + void SWMRLink::buildModulator() + { + // Get parameters + double data_rate = getParameter("DataRate"); + const String& optimize_loss = getParameter("OptimizeLoss"); + unsigned int number_wavelengths = getParameter("NumberWavelengths"); + unsigned int number_readers = getParameter("NumberReaders"); + unsigned int number_max_readers = std::min(number_readers, getParameter("MaxReaders").toUInt()); + unsigned int number_min_readers = std::min(number_max_readers, getParameter("MinReaders").toUInt()); + + // Create modulator + RingModulator* modulator = new RingModulator("Modulator", getTechModel()); + modulator->setParameter("DataRate", data_rate); + modulator->setParameter("InStart", 0); + modulator->setParameter("InEnd", number_wavelengths-1); + modulator->setParameter("ModStart", 0); + modulator->setParameter("ModEnd", number_wavelengths-1); + modulator->setParameter("OptimizeLoss", optimize_loss); + modulator->construct(); + addSubInstances(modulator, 1.0); + getAreaResult("Photonic")->addSubResult(modulator->getAreaResult("Photonic"), "Modulator", 1.0); + addElectricalSubResults(modulator, 1.0); + + // Connect electrical port + portConnect(modulator, "In", "In"); + // Connect modulator input, output port + opticalPortConnect(modulator, "In", "LaserToMod"); + opticalPortConnect(modulator, "Out", "WaveguideSegment[0]"); + + // Add modulator energy event for all broadcast events + getEventResult("BroadcastFlit")->addSubResult(modulator->getEventResult("Modulate"), "Modulator", 1.0); + for (unsigned int i = number_min_readers; i <= number_max_readers; ++i) + getEventResult("MulticastFlit" + (String) i)->addSubResult(modulator->getEventResult("Modulate"), "Modulator", 1.0); + + return; + } + + void SWMRLink::buildDetectors() + { + // Get parameters + double data_rate = getParameter("DataRate"); + unsigned int number_wavelengths = getParameter("NumberWavelengths"); + unsigned int number_readers = getParameter("NumberReaders"); + unsigned int number_max_readers = std::min(number_readers, getParameter("MaxReaders").toUInt()); + unsigned int number_min_readers = std::min(number_max_readers, getParameter("MinReaders").toUInt()); + + // Create a SWMR Configuration + for (unsigned int i = 0; i < number_readers; ++i) + { + String n = (String) i; + + // Create resonant ring detector + RingDetector* detector = new RingDetector("Detector_" + n, getTechModel()); + detector->setParameter("DataRate", data_rate); + detector->setParameter("InStart", 0); + detector->setParameter("InEnd", number_wavelengths-1); + detector->setParameter("DetStart", 0); + detector->setParameter("DetEnd", number_wavelengths-1); + detector->setParameter("DropAll", "FALSE"); + detector->setParameter("Topology", RingDetector::INTEGRATINGSENSEAMP); + detector->construct(); + addSubInstances(detector, 1.0); + getAreaResult("Photonic")->addSubResult(detector->getAreaResult("Photonic"), "Detector_" + n, 1.0); + addElectricalSubResults(detector, 1.0); + + // connect to electrical port + portConnect(detector, "Out", "Out" + (String) i); + // connect optical input, output port + opticalPortConnect(detector, "In", "WaveguideSegment[" + (String) i + "]"); + opticalPortConnect(detector, "Out", "WaveguideSegment[" + (String) (i + 1) + "]"); + } + + // Add an average receiver energy for all multicast events (and broadcast) + Result* broadcast_event = getEventResult("BroadcastFlit"); + for (unsigned int i = 0; i < number_readers; ++i) + { + const String detector_name = "Detector_" + (String) i; + broadcast_event->addSubResult(getSubInstance(detector_name)->getEventResult("Receive"), detector_name, 1.0); + } + for (unsigned int i = number_min_readers; i <= number_max_readers; ++i) + { + Result* multicast_event = getEventResult("MulticastFlit" + (String) i); + for (unsigned int j = 0; j < number_readers; ++j) + { + const String detector_name = "Detector_" + (String) j; + multicast_event->addSubResult(getSubInstance(detector_name)->getEventResult("Receive"), detector_name, (double) i / number_readers); + } + } + + return; + } + +} // namespace DSENT + |