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Added computation and display of the effective space margin in Etesian.

This commit is contained in:
Jean-Paul Chaput 2021-03-24 23:22:03 +01:00
parent f89e4ed467
commit fa4084f3d9
1 changed files with 43 additions and 25 deletions
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68
etesian/src/EtesianEngine.cpp
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@ -493,13 +493,14 @@ namespace Etesian {
);
}
void EtesianEngine::setDefaultAb ()
{
_bloatCells.resetDxSpace();
double spaceMargin = getSpaceMargin();
double aspectRatio = getAspectRatio();
size_t instanceNb = 0;
double cellLength = 0;
double spaceMargin = getSpaceMargin();
double aspectRatio = getAspectRatio();
size_t instanceNb = 0;
DbU::Unit cellLength = 0;
cmess2 << " o Looking through the hierarchy." << endl;
@ -524,7 +525,7 @@ namespace Etesian {
cerr << Error( "EtesianEngine::setDefaultAb(): Block instances are not managed, \"%s\"."
, getString(instance->getName()).c_str() ) << endl;
}
cellLength += DbU::toLambda( _bloatCells.getAb( occurrence ).getWidth() );
cellLength += _bloatCells.getAb( occurrence ).getWidth();
instanceNb += 1;
}
@ -539,12 +540,12 @@ namespace Etesian {
, getString(getCell()->getName()).c_str()
);
double bloatLength = DbU::toLambda( _bloatCells.getDxSpace() );
double bloatMargin = ( cellLength / (cellLength - bloatLength) ) - 1.0;
DbU::Unit bloatLength = _bloatCells.getDxSpace();
double bloatMargin = ( (double)cellLength / (double)(cellLength - bloatLength) ) - 1.0;
double gcellLength = cellLength*(1.0+spaceMargin) / DbU::toLambda( getSliceHeight() );
DbU::Unit gcellLength = (double)cellLength*(1.0+spaceMargin) / (double)getSliceHeight();
if (gcellLength == 0.0) {
if (gcellLength == 0) {
throw Error( "EtesianEngine::setDefaultAb(): Null g-length for \"%s\" (are you using the right gauge?)."
, getString(getCell()->getName()).c_str()
);
@ -554,11 +555,11 @@ namespace Etesian {
double columns = 0.0;
if (not getFixedAbWidth()) {
if (getFixedAbHeight()) rows = getFixedAbHeight() / getSliceHeight();
else rows = std::ceil( sqrt( gcellLength/aspectRatio ) );
columns = std::ceil( gcellLength / rows );
else rows = std::ceil( sqrt( (double)gcellLength/aspectRatio ) );
columns = std::ceil( (double)gcellLength / rows );
} else {
columns = getFixedAbWidth() / getSliceHeight();
rows = std::ceil( gcellLength / columns );
rows = std::ceil( (double)gcellLength / columns );
}
UpdateSession::open();
@ -570,8 +571,8 @@ namespace Etesian {
DbU::Unit adjust = abWidth % getSliceStep();
if (adjust) abWidth += getSliceStep() - adjust;
getCell()->setAbutmentBox( Box( DbU::fromLambda(0)
, DbU::fromLambda(0)
getCell()->setAbutmentBox( Box( 0
, 0
, abWidth
, rows*getSliceHeight()
) );
@ -581,7 +582,7 @@ namespace Etesian {
cmess1 << " o Creating abutment box (margin:" << (spaceMargin*100.0)
<< "% aspect ratio:" << (aspectRatio*100.0)
<< "% g-length:" << (cellLength/DbU::toLambda(getSliceHeight()))
<< "% g-length:" << DbU::getValueString(cellLength)
<< ")" << endl;
if (getFixedAbHeight())
cmess1 << " - Fixed AB height: " << DbU::getValueString(getFixedAbHeight()) << endl;
@ -684,9 +685,10 @@ namespace Etesian {
size_t EtesianEngine::toColoquinte ()
{
AllianceFramework* af = AllianceFramework::get();
DbU::Unit hpitch = getSliceStep();
DbU::Unit vpitch = getSliceStep();
AllianceFramework* af = AllianceFramework::get();
DbU::Unit hpitch = getSliceStep();
DbU::Unit vpitch = getSliceStep();
DbU::Unit sliceHeight = getSliceHeight();
cmess1 << " o Converting <" << getCell()->getName() << "> into Coloquinte." << endl;
cmess1 << ::Dots::asString(" - H-pitch" , DbU::getValueString(hpitch)) << endl;
@ -710,6 +712,8 @@ namespace Etesian {
}
cmess2 << " - Whole place area: " << getBlockCell()->getAbutmentBox() << "." << endl;
cmess2 << " - Sub-place Area: " << _placeArea << "." << endl;
DbU::Unit totalLength = (_placeArea.getHeight()/sliceHeight) * _placeArea.getWidth();
DbU::Unit usedLength = 0;
Dots dots ( cmess2, " ", 80, 1000 );
if (not cmess2.enabled()) dots.disable();
@ -723,10 +727,12 @@ namespace Etesian {
topTransformation.applyOn( topAb );
for ( Instance* instance : getCell()->getInstances() ) {
if (instance == getBlockInstance()) continue;
Box instanceAb = instance->getAbutmentBox();
if (instance->getPlacementStatus() == Instance::PlacementStatus::FIXED) {
if (topAb.intersect(instance->getAbutmentBox())) {
if (topAb.intersect(instanceAb)) {
++instancesNb;
++fixedNb;
totalLength -= (instanceAb.getHeight()/sliceHeight) * instanceAb.getWidth();
}
}
}
@ -734,9 +740,15 @@ namespace Etesian {
for ( Occurrence occurrence : getCell()->getTerminalNetlistInstanceOccurrences(getBlockInstance()) ) {
++instancesNb;
Instance* instance = static_cast<Instance*>(occurrence.getEntity());
if (instance->getPlacementStatus() == Instance::PlacementStatus::FIXED)
Instance* instance = static_cast<Instance*>(occurrence.getEntity());
Box instanceAb = instance->getAbutmentBox();
if (instance->getPlacementStatus() == Instance::PlacementStatus::FIXED) {
++fixedNb;
totalLength -= (instanceAb.getHeight()/sliceHeight) * instanceAb.getWidth();
} else {
usedLength += (instanceAb.getHeight()/sliceHeight) * instanceAb.getWidth();
//cerr << DbU::getValueString(usedLength) << " " << instance << endl;
}
}
if (instancesNb <= fixedNb) {
cerr << Error( "EtesianEngine::toColoquinte(): \"%s\" has no instance to place, doing nothing."
@ -744,6 +756,10 @@ namespace Etesian {
) << endl;
return 0;
}
//cerr << "total length=" << DbU::getValueString(totalLength) << endl;
//cerr << "used length=" << DbU::getValueString(usedLength) << endl;
cmess1 << ::Dots::asPercentage( " - Effective space margin"
, (float)(totalLength-usedLength)/(float)totalLength ) << endl;
// Coloquinte circuit description data-structures.
// One dummy fixed instance at the end
@ -752,15 +768,17 @@ namespace Etesian {
vector< point<int_t> > positions ( instancesNb+1 );
vector< point<bool> > orientations( instancesNb+1, point<bool>(true, true) );
cmess1 << " - Converting " << instancesNb << " instances" << endl;
cmess1 << ::Dots::asUInt( " - Number of instances ", instancesNb ) << endl;
if (instancesNb) {
float bufferRatio = ((float)_bufferCount / (float)instancesNb) * 100.0;
cmess1 << " - Buffers " << _bufferCount
<< " (" << fixed << setprecision(2) << bufferRatio << "%)" << endl;
ostringstream os;
os << _bufferCount << " (" << fixed << setprecision(2) << bufferRatio << "%)";
cmess1 << ::Dots::asString( " - Buffers ", os.str() ) << endl;
}
cout.flush();
cmess1 << " - Building RoutingPads (transhierarchical) ..." << endl;
cmess1 << " - Building RoutingPads (transhierarchical)" << endl;
//getCell()->flattenNets( Cell::Flags::BuildRings|Cell::Flags::NoClockFlatten );
//getCell()->flattenNets( getBlockInstance(), Cell::Flags::NoClockFlatten );
getCell()->flattenNets( NULL, Cell::Flags::NoClockFlatten );