e8ed7b1d1b
This patch adds a tool called DSENT to the ext/ directory. DSENT is a tool that models power and area for on-chip networks. The next patch adds a script for using the tool.
106 lines
3.9 KiB
C++
106 lines
3.9 KiB
C++
#include "model/optical/GatedLaserSource.h"
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#include "model/optical_graph/OpticalWaveguide.h"
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#include "model/optical_graph/OpticalWavelength.h"
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#include "model/optical_graph/OpticalLaser.h"
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#include "model/optical_graph/OpticalGraph.h"
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namespace DSENT
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{
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GatedLaserSource::GatedLaserSource(const String& instance_name_, const TechModel* tech_model_)
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: OpticalModel(instance_name_, tech_model_)
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{
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initParameters();
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initProperties();
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}
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GatedLaserSource::~GatedLaserSource()
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{}
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void GatedLaserSource::initParameters()
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{
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addParameterName("OutStart");
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addParameterName("OutEnd");
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addParameterName("MaxDetectors");
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return;
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}
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void GatedLaserSource::initProperties()
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{
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addPropertyName("OptUtil", 1.0);
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addPropertyName("LaserEventTime");
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return;
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}
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void GatedLaserSource::constructModel()
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{
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// Create Area result
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Result* area_result = new AtomicResult("Photonic");
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addAreaResult(area_result);
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// Create NDD power result
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Result* energy_result = new AtomicResult("Laser");
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addEventResult(energy_result);
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// Get parameters
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WavelengthGroup laser_wavelengths = makeWavelengthGroup(getParameter("OutStart"), getParameter("OutEnd"));
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// Create optical ports
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createOpticalOutputPort( "Out", laser_wavelengths);
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// Create the filter
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createLaser( "Laser", laser_wavelengths);
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OpticalLaser* laser = getLaser("Laser");
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// Connect the laser to the output
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laser->addDownstreamNode(getWaveguide("Out"));
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}
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void GatedLaserSource::updateModel()
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{
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// Get properties
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double laser_efficiency = getTechModel()->get("Laser->CW->Efficiency");
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double laser_area = getTechModel()->get("Laser->CW->Area");
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double laser_diode_loss = getTechModel()->get("Laser->CW->LaserDiodeLoss");
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// Get parameters
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WavelengthGroup laser_wavelengths = makeWavelengthGroup(getParameter("OutStart"), getParameter("OutEnd"));
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unsigned int number_wavelengths = laser_wavelengths.second - laser_wavelengths.first + 1;
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// Update losses
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OpticalLaser* laser = getLaser("Laser");
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laser->setLoss(laser_diode_loss);
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laser->setEfficiency(laser_efficiency);
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// Update area
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getAreaResult("Photonic")->setValue(laser_area * number_wavelengths);
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}
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void GatedLaserSource::evaluateModel()
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{
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// Get parameters
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unsigned int max_detectors = getParameter("MaxDetectors");
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double laser_event_time = getProperty("LaserEventTime");
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WavelengthGroup laser_wavelengths = makeWavelengthGroup(getParameter("OutStart"), getParameter("OutEnd"));
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// Get properties
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double opt_util = getProperty("OptUtil");
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// Create optical graph object
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OpticalGraph* optical_graph = new OpticalGraph("LaserTrace", this);
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// Ask optical graph object to perform power optimization
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bool success = optical_graph->performPowerOpt(getLaser("Laser"), laser_wavelengths, max_detectors, opt_util);
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if (!success)
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{
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Log::printLine(std::cerr, "[Warning] " + getInstanceName() +
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" -> Wavelengths contains data paths with no possible modulator configurations!");
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}
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// Trace the wavelengths the laser is outputting to find the output
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// power needed by the laser
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OpticalWavelength* wavelength = optical_graph->traceWavelength(laser_wavelengths, getLaser("Laser"));
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// Calculate the power needed by the wavelength
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double laser_power = wavelength->getLaserPower(max_detectors);
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// Calculate NDD power
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getEventResult("Laser")->setValue(laser_power * laser_event_time);
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delete wavelength;
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delete optical_graph;
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}
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} // namespace DSENT
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