jcarr
/
coriolis
1
0
Fork 0
Code Issues Pull Requests Projects Releases Wiki Activity

Merge the routing-driven version of Etesian (github/RoutingDriven)

This commit is contained in:
Jean-Paul Chaput 2015-04-25 17:24:53 +02:00
parent 770b1fbbbc 4b628baa17
commit 731d435a35
16 changed files with 424 additions and 223 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

4
bootstrap/build.conf
View File

@ -14,11 +14,11 @@ projects = [
#, "nimbus" #, "nimbus"
#, "metis" #, "metis"
#, "mauka" #, "mauka"
, "coloquinte"
, "etesian"
, "knik" , "knik"
, "katabatic" , "katabatic"
, "kite" , "kite"
, "coloquinte"
, "etesian"
, "equinox" , "equinox"
, "solstice" , "solstice"
, "unicorn" , "unicorn"

6
coloquinte/CMakeLists.txt
View File

@ -19,7 +19,11 @@
find_package(Libexecinfo REQUIRED) find_package(Libexecinfo REQUIRED)
if(WITH_OPENMP) if(WITH_OPENMP)
add_definitions( -fopenmp ) find_package(OpenMP REQUIRED)
add_definitions(${OpenMP_CXX_FLAGS})
set(CMAKE_MODULE_LINKER_FLAGS "${CMAKE_MODULE_LINKER_FLAGS} ${OpenMP_CXX_FLAGS}")
set(CMAKE_SHARED_LINKER_FLAGS "${CMAKE_SHARED_LINKER_FLAGS} ${OpenMP_CXX_FLAGS}")
set(CMAKE_EXE_LINKER_FLAGS "${CMAKE_EXE_LINKER_FLAGS} ${OpenMP_CXX_FLAGS}")
endif() endif()
add_subdirectory(src) add_subdirectory(src)

21
coloquinte/src/coloquinte/rough_legalizers.hxx
View File

@ -18,6 +18,13 @@
*/ */
namespace coloquinte{ namespace coloquinte{
struct density_limit{
box<int_t> box_;
float_t density_; // from 0.0 for a macro to 1.0 if it does nothing
};
typedef std::vector<density_limit> density_restrictions;
namespace gp{ namespace gp{
class region_distribution{ class region_distribution{
@ -38,11 +45,6 @@ class region_distribution{
// Specifies a maximum density of movable cells per usable area // Specifies a maximum density of movable cells per usable area
// Representing either a macroblock or a routing congestion // Representing either a macroblock or a routing congestion
struct density_limit{
box<int_t> box_;
float_t density_; // from 0.0 for a macro to 1.0 if it does nothing
};
private: private:
struct region; struct region;
@ -129,6 +131,9 @@ class region_distribution{
public: public:
inline box<int_t> placement_area() const;
inline point<float_t> region_dimensions() const;
inline index_t x_regions_cnt() const; inline index_t x_regions_cnt() const;
inline index_t y_regions_cnt() const; inline index_t y_regions_cnt() const;
inline index_t regions_cnt() const; inline index_t regions_cnt() const;
@ -204,6 +209,12 @@ class region_distribution{
inline region_distribution::movable_cell::movable_cell(){} inline region_distribution::movable_cell::movable_cell(){}
inline region_distribution::movable_cell::movable_cell(capacity_t demand, point<float_t> p, index_t ind) : demand_(demand), pos_(p), index_in_placement_(ind){} inline region_distribution::movable_cell::movable_cell(capacity_t demand, point<float_t> p, index_t ind) : demand_(demand), pos_(p), index_in_placement_(ind){}
inline box<int_t> region_distribution::placement_area() const { return placement_area_; }
inline point<float_t> region_distribution::region_dimensions() const {
point<int_t> s = static_cast<point<float_t> >(placement_area().dimensions());
return point<float_t>(s.x_/x_regions_cnt(), s.y_/y_regions_cnt());
}
inline index_t region_distribution::x_regions_cnt() const { return x_regions_cnt_; } inline index_t region_distribution::x_regions_cnt() const { return x_regions_cnt_; }
inline index_t region_distribution::y_regions_cnt() const { return y_regions_cnt_; } inline index_t region_distribution::y_regions_cnt() const { return y_regions_cnt_; }
inline index_t region_distribution::regions_cnt() const { index_t ret = x_regions_cnt() * y_regions_cnt(); assert(placement_regions_.size() == ret); return ret; } inline index_t region_distribution::regions_cnt() const { index_t ret = x_regions_cnt() * y_regions_cnt(); assert(placement_regions_.size() == ret); return ret; }

1
coloquinte/src/piecewise_linear.cxx
View File

@ -201,6 +201,7 @@ int_t piecewise_linear_function::last_before(int_t pos) const{
++it; ++it;
} }
assert(false); // We should have found it if the bound was correct assert(false); // We should have found it if the bound was correct
return -1;
} }
int_t piecewise_linear_function::value_at(int_t pos) const{ int_t piecewise_linear_function::value_at(int_t pos) const{

1
coloquinte/src/rough_legalizers.cxx
View File

@ -117,6 +117,7 @@ std::vector<region_distribution::region> region_distribution::prepare_regions(in
// The regions' capacities // The regions' capacities
std::vector<capacity_t> region_caps(x_cnt * y_cnt, 0); std::vector<capacity_t> region_caps(x_cnt * y_cnt, 0);
// Find the limits of the regions
std::vector<int_t> x_reg_lims(x_cnt+1), y_reg_lims(y_cnt+1); std::vector<int_t> x_reg_lims(x_cnt+1), y_reg_lims(y_cnt+1);
for(index_t i=0; i<=x_cnt; ++i){ for(index_t i=0; i<=x_cnt; ++i){
x_reg_lims[i] = placement_area_.x_min_ + ( ((std::int64_t) (placement_area_.x_max_ - placement_area_.x_min_)) * i ) / x_cnt; x_reg_lims[i] = placement_area_.x_min_ + ( ((std::int64_t) (placement_area_.x_max_ - placement_area_.x_min_)) * i ) / x_cnt;

4
etesian/CMakeLists.txt
View File

@ -16,13 +16,13 @@
set_lib_link_mode() set_lib_link_mode()
setup_boost(program_options python regex) setup_boost(program_options python regex)
find_package(LibXml2 REQUIRED)
find_package(PythonLibs REQUIRED) find_package(PythonLibs REQUIRED)
find_package(PythonSitePackages REQUIRED) find_package(PythonSitePackages REQUIRED)
find_package(VLSISAPD REQUIRED) find_package(VLSISAPD REQUIRED)
find_package(LEFDEF REQUIRED)
find_package(HURRICANE REQUIRED) find_package(HURRICANE REQUIRED)
find_package(KATABATIC REQUIRED)
find_package(CORIOLIS REQUIRED) find_package(CORIOLIS REQUIRED)
find_package(KITE REQUIRED)
find_package(COLOQUINTE REQUIRED) find_package(COLOQUINTE REQUIRED)
find_package(Libexecinfo REQUIRED) find_package(Libexecinfo REQUIRED)

4
etesian/src/CMakeLists.txt
View File

@ -30,11 +30,13 @@
PyGraphicEtesianEngine.cpp PyGraphicEtesianEngine.cpp
) )
qtX_wrap_cpp( mocCpps ${mocIncludes} ) qtX_wrap_cpp( mocCpps ${mocIncludes} )
set( depLibs ${CORIOLIS_PYTHON_LIBRARIES} set( depLibs ${KATABATIC_LIBRARIES}
${CORIOLIS_PYTHON_LIBRARIES}
${CORIOLIS_LIBRARIES} ${CORIOLIS_LIBRARIES}
${HURRICANE_PYTHON_LIBRARIES} ${HURRICANE_PYTHON_LIBRARIES}
${HURRICANE_GRAPHICAL_LIBRARIES} ${HURRICANE_GRAPHICAL_LIBRARIES}
${HURRICANE_LIBRARIES} ${HURRICANE_LIBRARIES}
${KITE_LIBRARIES}
${CONFIGURATION_LIBRARY} ${CONFIGURATION_LIBRARY}
${BOOKSHELF_LIBRARY} ${BOOKSHELF_LIBRARY}
${CIF_LIBRARY} ${CIF_LIBRARY}

4
etesian/src/Configuration.cpp
View File

@ -56,7 +56,8 @@ namespace Etesian {
: _cg ( NULL ) : _cg ( NULL )
, _placeEffort ( static_cast<Effort> (Cfg::getParamEnumerate ("etesian.effort" , Standard )->asInt()) ) , _placeEffort ( static_cast<Effort> (Cfg::getParamEnumerate ("etesian.effort" , Standard )->asInt()) )
, _updateConf ( static_cast<GraphicUpdate> (Cfg::getParamEnumerate ("etesian.graphics" , LowerBound )->asInt()) ) , _updateConf ( static_cast<GraphicUpdate> (Cfg::getParamEnumerate ("etesian.graphics" , LowerBound )->asInt()) )
, _spreadingConf( Cfg::getParamBool ("etesian.uniformDensity", false )->asBool()?ForceUniform:MaxDensity ) , _spreadingConf( Cfg::getParamBool ("etesian.uniformDensity", false )->asBool()? ForceUniform : MaxDensity )
, _routingDriven( Cfg::getParamBool ("etesian.routingDriven", false )->asBool())
, _spaceMargin ( Cfg::getParamPercentage("etesian.spaceMargin" , 5.0)->asDouble() ) , _spaceMargin ( Cfg::getParamPercentage("etesian.spaceMargin" , 5.0)->asDouble() )
, _aspectRatio ( Cfg::getParamPercentage("etesian.aspectRatio" ,100.0)->asDouble() ) , _aspectRatio ( Cfg::getParamPercentage("etesian.aspectRatio" ,100.0)->asDouble() )
{ {
@ -95,6 +96,7 @@ namespace Etesian {
cout << Dots::asInt (" - Place Effort" ,_placeEffort ) << endl; cout << Dots::asInt (" - Place Effort" ,_placeEffort ) << endl;
cout << Dots::asInt (" - Update Conf" ,_updateConf ) << endl; cout << Dots::asInt (" - Update Conf" ,_updateConf ) << endl;
cout << Dots::asInt (" - Spreading Conf",_spreadingConf) << endl; cout << Dots::asInt (" - Spreading Conf",_spreadingConf) << endl;
cout << Dots::asBool (" - Routing driven",_routingDriven) << endl;
cout << Dots::asPercentage(" - Space Margin" ,_spaceMargin ) << endl; cout << Dots::asPercentage(" - Space Margin" ,_spaceMargin ) << endl;
cout << Dots::asPercentage(" - Aspect Ratio" ,_aspectRatio ) << endl; cout << Dots::asPercentage(" - Aspect Ratio" ,_aspectRatio ) << endl;
} }

469
etesian/src/EtesianEngine.cpp
View File

@ -39,6 +39,9 @@
#include "hurricane/RoutingPad.h" #include "hurricane/RoutingPad.h"
#include "hurricane/UpdateSession.h" #include "hurricane/UpdateSession.h"
#include "hurricane/viewer/CellWidget.h" #include "hurricane/viewer/CellWidget.h"
#include "katabatic/GCellGrid.h"
#include "katabatic/KatabaticEngine.h"
#include "kite/KiteEngine.h"
#include "crlcore/Utilities.h" #include "crlcore/Utilities.h"
#include "crlcore/Measures.h" #include "crlcore/Measures.h"
#include "crlcore/AllianceFramework.h" #include "crlcore/AllianceFramework.h"
@ -54,9 +57,17 @@ namespace {
using coloquinte::float_t; using coloquinte::float_t;
using coloquinte::point; using coloquinte::point;
// Options for both placers
unsigned const SteinerModel = 0x0001;
// Options for the global placer
unsigned const ForceUniformDensity = 0x0010;
unsigned const UpdateLB = 0x0020;
unsigned const UpdateUB = 0x0040;
//inline bool isNan( const float_t& f ) { return (f != f); } // Options for the detailed placer
unsigned const UpdateDetailed = 0x0100;
unsigned const NonConvexOpt = 0x0200;
string extractInstanceName ( const RoutingPad* rp ) string extractInstanceName ( const RoutingPad* rp )
@ -574,11 +585,224 @@ namespace Etesian {
} }
void EtesianEngine::place () void EtesianEngine::preplace (){
{ using namespace coloquinte::gp;
// Perform a very quick legalization pass
cmess2 << " o Simple legalization." << endl;
auto first_legalizer = region_distribution::uniform_density_distribution(_surface, _circuit, _placementLB);
first_legalizer.selfcheck();
get_rough_legalization( _circuit, _placementUB, first_legalizer);
_placementLB = _placementUB;
// Early topology-independent solution with a star model + negligible pulling forces to avoid dumb solutions
// Spreads well to help subsequent optimization passes
cmess2 << " o Star (*) Optimization." << endl;
auto solv = get_star_linear_system( _circuit, _placementLB, 1.0, 0, 10) // Limit the number of pins: don't want big awful nets with high weight
+ get_pulling_forces( _circuit, _placementUB, 1000000.0);
solve_linear_system( _circuit, _placementLB, solv, 200 );
_progressReport2(" [--]" );
}
void EtesianEngine::roughLegalize( float minDisruption, unsigned options ){
using namespace coloquinte::gp;
// Create a legalizer and bipartition it until we have sufficient precision
auto legalizer = (options & ForceUniformDensity) != 0 ?
region_distribution::uniform_density_distribution (_surface, _circuit, _placementLB, _densityLimits)
: region_distribution::full_density_distribution (_surface, _circuit, _placementLB, _densityLimits);
while(legalizer.region_dimensions().x_ > 2*legalizer.region_dimensions().y_)
legalizer.x_bipartition();
while(2*legalizer.region_dimensions().x_ < legalizer.region_dimensions().y_)
legalizer.y_bipartition();
while( std::max(legalizer.region_dimensions().x_, legalizer.region_dimensions().y_)*4 > minDisruption ) {
legalizer.x_bipartition();
legalizer.y_bipartition();
legalizer.redo_line_partitions();
legalizer.redo_diagonal_bipartitions();
legalizer.redo_line_partitions();
legalizer.redo_diagonal_bipartitions();
legalizer.selfcheck();
}
// Keep the orientation between LB and UB
_placementUB = _placementLB;
// Update UB
get_rough_legalization( _circuit, _placementUB, legalizer );
}
void EtesianEngine::feedRoutingBack(){
using namespace Katabatic;
using namespace Kite;
/*
* If routing information is present, use it to
* * artificially expand the areas given to coloquinte
* * add placement dentity constraints
*/
DbU::Unit pitch = getPitch();
const float densityThreshold = 0.9;
KiteEngine* routingEngine = KiteEngine::get( getCell() );
if(routingEngine == NULL)
throw Error("No routing information was found when performing routing-driven placement\n");
GCellGrid * grid = routingEngine->getGCellGrid();
// Get information about the GCells
// Create different densities
_densityLimits.clear();
forEach(GCell*, gc, grid->getGCells()){
float density = (*gc)->getMaxHVDensity();
if(density >= densityThreshold){
coloquinte::density_limit cur;
cur.box_ = coloquinte::box<int_t>(
(*gc)->getX() / pitch,
(*gc)->getXMax() / pitch,
(*gc)->getY() / pitch,
(*gc)->getYMax() / pitch
);
cur.density_ = densityThreshold/density;
_densityLimits.push_back(cur);
}
}
// TODO: Careful to keep the densities high enough
// Will just fail later if the densities are too high
// Expand areas: TODO
}
void EtesianEngine::globalPlace ( float initPenalty, float minDisruption, float targetImprovement, float minInc, float maxInc, unsigned options ){
using namespace coloquinte::gp;
float_t penaltyIncrease = minInc;
float_t linearDisruption = get_mean_linear_disruption(_circuit, _placementLB, _placementUB);
float_t pullingForce = initPenalty;
float_t upperWL = static_cast<float_t>(get_HPWL_wirelength(_circuit, _placementUB)),
lowerWL = static_cast<float_t>(get_HPWL_wirelength(_circuit, _placementLB));
float_t prevOptRatio = lowerWL / upperWL;
index_t i=0;
do{
roughLegalize(minDisruption, options);
if(options & UpdateUB)
_updatePlacement( _placementUB );
ostringstream label;
label.str("");
label << " [" << setw(2) << setfill('0') << i << "] Bipart.";
_progressReport1(label.str() );
upperWL = static_cast<float_t>(get_HPWL_wirelength(_circuit, _placementUB));
//float_t legRatio = lowerWL / upperWL;
// Get the system to optimize (tolerance, maximum and minimum pin counts)
// and the pulling forces (threshold distance)
auto opt_problem = (options & SteinerModel) ?
get_RSMT_linear_system ( _circuit, _placementLB, minDisruption, 2, 100000 )
: get_HPWLF_linear_system ( _circuit, _placementLB, minDisruption, 2, 100000 );
auto solv = opt_problem
+ get_linear_pulling_forces( _circuit, _placementUB, _placementLB, pullingForce, 2.0f * linearDisruption);
solve_linear_system( _circuit, _placementLB, solv, 200 ); // 200 iterations
_progressReport2(" Linear." );
if(options & UpdateLB)
_updatePlacement( _placementLB );
// Optimize orientation sometimes
if (i%5 == 0) {
optimize_exact_orientations( _circuit, _placementLB );
_progressReport2(" Orient." );
}
lowerWL = static_cast<float_t>(get_HPWL_wirelength(_circuit, _placementLB));
float_t optRatio = lowerWL / upperWL;
/*
* Schedule the penalty during global placement to achieve uniform improvement
*
* Currently, the metric considered is the ratio optimized HPWL/legalized HPWL
* Other ones, like the disruption itself, may be considered
*/
penaltyIncrease = std::min(maxInc, std::max(minInc,
penaltyIncrease * std::sqrt( targetImprovement / (optRatio - prevOptRatio) )
) );
cparanoid << " L/U ratio: " << 100*optRatio << "% (previous: " << 100*prevOptRatio << "%)\n"
<< " Pulling force: " << pullingForce << " Increase: " << penaltyIncrease << endl;
pullingForce += penaltyIncrease;
prevOptRatio = optRatio;
linearDisruption = get_mean_linear_disruption(_circuit, _placementLB, _placementUB);
++i;
// First way to exit the loop: UB and LB difference is <10%
// Second way to exit the loop: the legalization is close enough to the previous result
}while(linearDisruption > minDisruption and prevOptRatio <= 0.9);
_updatePlacement( _placementUB );
}
void EtesianEngine::detailedPlace ( int iterations, int effort, unsigned options ){
using namespace coloquinte::gp; using namespace coloquinte::gp;
using namespace coloquinte::dp; using namespace coloquinte::dp;
int_t sliceHeight = getSliceHeight() / getPitch();
roughLegalize(sliceHeight, options);
for ( int i=0; i<iterations; ++i ){
ostringstream label;
label.str("");
label << " [" << setw(2) << setfill('0') << i << "]";
optimize_x_orientations( _circuit, _placementUB ); // Don't disrupt VDD/VSS connections in a row
_progressReport1(label.str()+" Oriented ......." );
if(options & UpdateDetailed)
_updatePlacement( _placementUB );
auto legalizer = legalize( _circuit, _placementUB, _surface, sliceHeight );
coloquinte::dp::get_result( _circuit, legalizer, _placementUB );
_progressReport1(" Legalized ......" );
if(options & UpdateDetailed)
_updatePlacement( _placementUB );
row_compatible_orientation( _circuit, legalizer, true );
swaps_global_HPWL( _circuit, legalizer, 3, 4 );
coloquinte::dp::get_result( _circuit, legalizer, _placementUB );
_progressReport1(" Global Swaps ..." );
if(options & UpdateDetailed)
_updatePlacement( _placementUB );
if(options & SteinerModel)
OSRP_noncvx_RSMT( _circuit, legalizer );
else
OSRP_convex_HPWL( _circuit, legalizer );
coloquinte::dp::get_result( _circuit, legalizer, _placementUB );
_progressReport1(" Row Optimization" );
if(options & UpdateDetailed)
_updatePlacement( _placementUB );
if(options & SteinerModel)
swaps_row_noncvx_RSMT( _circuit, legalizer, effort+2 );
else
swaps_row_convex_HPWL( _circuit, legalizer, effort+2 );
coloquinte::dp::get_result( _circuit, legalizer, _placementUB );
_progressReport1(" Local Swaps ...." );
if(options & UpdateDetailed)
_updatePlacement( _placementUB );
if (i == iterations-1) {
//swaps_row_convex_RSMT( _circuit, legalizer, 4 );
row_compatible_orientation( _circuit, legalizer, true );
coloquinte::dp::get_result( _circuit, legalizer, _placementUB );
verify_placement_legality( _circuit, _placementUB, _surface );
_progressReport1(" Final Legalize ." );
}
}
_placementLB = _placementUB; // In case we run other passes
_updatePlacement( _placementUB );
}
void EtesianEngine::place ()
{
getCell()->uniquify(); getCell()->uniquify();
getConfiguration()->print( getCell() ); getConfiguration()->print( getCell() );
@ -590,204 +814,91 @@ namespace Etesian {
Effort placementEffort = getPlaceEffort(); Effort placementEffort = getPlaceEffort();
GraphicUpdate placementUpdate = getUpdateConf(); GraphicUpdate placementUpdate = getUpdateConf();
Density densityConf = getSpreadingConf(); Density densityConf = getSpreadingConf();
bool routingDriven = getRoutingDriven();
startMeasures();
double sliceHeight = getSliceHeight() / getPitch();
cmess1 << " o Running Coloquinte." << endl; cmess1 << " o Running Coloquinte." << endl;
cmess1 << " o Global placement." << endl;
cmess2 << " - Computing initial placement..." << endl; cmess2 << " - Computing initial placement..." << endl;
cmess2 << setfill('0') << right; cmess2 << right;
preplace();
double sliceHeight = getSliceHeight() / getPitch();
time_t startTime = time(NULL);
time_t timeDelta;
ostringstream label;
cmess2 << " o Initial wirelength " << get_HPWL_wirelength(_circuit, _placementLB) << "." << endl;
startMeasures();
cmess2 << " o Simple legalization." << endl;
auto first_legalizer = region_distribution::uniform_density_distribution(_surface, _circuit, _placementLB);
first_legalizer.selfcheck();
get_rough_legalization( _circuit, _placementUB, first_legalizer);
timeDelta = time(NULL) - startTime;
cmess2 << " - Elapsed time:" << timeDelta
<< " HPWL:" << get_HPWL_wirelength( _circuit, _placementUB )
<< "\n "
<< "- Linear Disrupt.:" << get_mean_linear_disruption ( _circuit, _placementLB, _placementUB )
<< " Quad. Disrupt.:" << get_mean_quadratic_disruption( _circuit, _placementLB, _placementUB )
<< endl;
_placementLB = _placementUB;
_placementLB.selfcheck();
if(placementUpdate == UpdateAll)
_updatePlacement( _placementUB );
// Early topology-independent solution + negligible pulling forces to avoid dumb solutions
cmess2 << " o Star (*) Optimization." << endl;
auto solv = get_star_linear_system( _circuit, _placementLB, 1.0, 0, 10000)
+ get_pulling_forces( _circuit, _placementUB, 1000000.0);
solve_linear_system( _circuit, _placementLB, solv, 200 );
_progressReport2( startTime, " [--]" );
if(placementUpdate <= LowerBound)
_updatePlacement( _placementLB );
cmess2 << " o Simple legalization." << endl;
auto snd_legalizer = region_distribution::uniform_density_distribution(_surface, _circuit, _placementLB);
get_rough_legalization( _circuit, _placementUB, snd_legalizer);
if(placementUpdate == UpdateAll)
_updatePlacement( _placementUB );
/*
* Schedule the penalty during global placement to achieve uniform improvement
*
* Currently, the metric considered is the ratio legalized HPWL/optimized HPWL
* Other ones, like the disruption itself, may be considered
*/
float_t minPenaltyIncrease, maxPenaltyIncrease, targetImprovement; float_t minPenaltyIncrease, maxPenaltyIncrease, targetImprovement;
int detailedIterations, detailedEffort;
unsigned globalOptions=0, detailedOptions=0;
if(placementUpdate == UpdateAll){
globalOptions |= (UpdateUB | UpdateLB);
detailedOptions |= UpdateDetailed;
}
else if(placementUpdate == LowerBound){
globalOptions |= UpdateLB;
}
if(densityConf == ForceUniform)
globalOptions |= ForceUniformDensity;
if(placementEffort == Fast){ if(placementEffort == Fast){
minPenaltyIncrease = 0.005f; minPenaltyIncrease = 0.005f;
maxPenaltyIncrease = 0.08f; maxPenaltyIncrease = 0.08f;
targetImprovement = 0.05f; // 5/100 per iteration targetImprovement = 0.05f; // 5/100 per iteration
detailedIterations = 1;
detailedEffort = 0;
} }
else if(placementEffort == Standard){ else if(placementEffort == Standard){
minPenaltyIncrease = 0.001f; minPenaltyIncrease = 0.001f;
maxPenaltyIncrease = 0.04f; maxPenaltyIncrease = 0.04f;
targetImprovement = 0.02f; // 2/100 per iteration targetImprovement = 0.02f; // 2/100 per iteration
detailedIterations = 2;
detailedEffort = 1;
} }
else if(placementEffort == High){ else if(placementEffort == High){
minPenaltyIncrease = 0.0005f; minPenaltyIncrease = 0.0005f;
maxPenaltyIncrease = 0.02f; maxPenaltyIncrease = 0.02f;
targetImprovement = 0.01f; // 1/100 per iteration targetImprovement = 0.01f; // 1/100 per iteration
detailedIterations = 4;
detailedEffort = 2;
} }
else{ else{
minPenaltyIncrease = 0.0002f; minPenaltyIncrease = 0.0002f;
maxPenaltyIncrease = 0.01f; maxPenaltyIncrease = 0.01f;
targetImprovement = 0.005f; // 5/1000 per iteration targetImprovement = 0.005f; // 5/1000 per iteration
detailedIterations = 7;
detailedEffort = 3;
} }
float_t pullingForce = minPenaltyIncrease; cmess1 << " o Global placement." << endl;
float_t penaltyIncrease = minPenaltyIncrease; globalPlace(minPenaltyIncrease, sliceHeight, targetImprovement, minPenaltyIncrease, maxPenaltyIncrease, globalOptions);
float_t linearDisruption = get_mean_linear_disruption(_circuit, _placementLB, _placementUB);
float_t currentDisruption = static_cast<float_t>(get_HPWL_wirelength( _circuit, _placementLB )) / static_cast<float_t>(get_HPWL_wirelength( _circuit, _placementUB ));
index_t i=0;
do{
// Get the system to optimize (tolerance, maximum and minimum pin counts)
// and the pulling forces (threshold distance)
auto solv = get_HPWLF_linear_system ( _circuit, _placementLB, 0.5 * sliceHeight, 2, 100000 )
+ get_linear_pulling_forces( _circuit, _placementUB, _placementLB, pullingForce, 2.0f * linearDisruption);
solve_linear_system( _circuit, _placementLB, solv, 400 ); // number of iterations
_progressReport2( startTime, " Linear." );
// Optimize orientation sometimes
if (i%5 == 0) {
optimize_exact_orientations( _circuit, _placementLB );
_progressReport2( startTime, " Orient." );
}
if(placementUpdate <= LowerBound)
_updatePlacement( _placementLB );
// Create a legalizer and bipartition it until we have sufficient precision
auto legalizer = densityConf == ForceUniform ?
region_distribution::uniform_density_distribution(_surface, _circuit, _placementLB)
: region_distribution::full_density_distribution(_surface, _circuit, _placementLB);
// Until there is about 10 standard cells per region
for ( int quad_part=0 ; _circuit.cell_cnt() > (index_t)(10 * (1 << (quad_part*2))) ; ++quad_part ) {
legalizer.x_bipartition();
legalizer.y_bipartition();
legalizer.redo_line_partitions();
legalizer.redo_diagonal_bipartitions();
legalizer.redo_line_partitions();
legalizer.redo_diagonal_bipartitions();
legalizer.selfcheck();
}
// Keep the orientation between LB and UB
_placementUB = _placementLB;
get_rough_legalization( _circuit, _placementUB, legalizer );
label.str("");
label << " [" << setw(2) << setfill('0') << i << "] Bipart.";
_progressReport1( startTime, label.str() );
if(placementUpdate == UpdateAll)
_updatePlacement( _placementUB );
float_t newDisruption = static_cast<float_t>(get_HPWL_wirelength( _circuit, _placementLB )) / static_cast<float_t>(get_HPWL_wirelength( _circuit, _placementUB ));
penaltyIncrease = std::min(maxPenaltyIncrease, std::max(minPenaltyIncrease,
penaltyIncrease * std::sqrt( targetImprovement / (newDisruption - currentDisruption) )
) );
currentDisruption = newDisruption;
linearDisruption = get_mean_linear_disruption(_circuit, _placementLB, _placementUB);
cparanoid << " Pulling force: " << pullingForce << " Increase: " << penaltyIncrease << endl;
pullingForce += penaltyIncrease;
++i;
}while(linearDisruption >= 0.5 * sliceHeight and currentDisruption <= 0.9);
cmess1 << " o Detailed Placement." << endl; cmess1 << " o Detailed Placement." << endl;
index_t detailedIterations; detailedPlace(detailedIterations, detailedEffort, detailedOptions);
if(placementEffort == Fast)
detailedIterations = 1;
else if(placementEffort == Standard)
detailedIterations = 3;
else if(placementEffort == High)
detailedIterations = 5;
else
detailedIterations = 8;
for ( index_t i=0; i<detailedIterations; ++i ){
ostringstream label;
label.str("");
label << " [" << setw(2) << setfill('0') << i << "]";
optimize_x_orientations( _circuit, _placementUB ); // Don't disrupt VDD/VSS connections in a row if(routingDriven){
_progressReport1( startTime, label.str()+" Oriented ......." ); bool success = false;
if(placementUpdate <= LowerBound) int routingDrivenIteration = 0;
_updatePlacement( _placementUB ); using namespace Kite;
while(true){
auto legalizer = legalize( _circuit, _placementUB, _surface, sliceHeight ); cmess2 << "Routing-driven placement iteration " << routingDrivenIteration << endl;
coloquinte::dp::get_result( _circuit, legalizer, _placementUB ); KiteEngine* kiteE = KiteEngine::create(_cell);
_progressReport1( startTime, " Legalized ......" ); kiteE->runGlobalRouter(0);
if(placementUpdate <= LowerBound) kiteE->loadGlobalRouting(Katabatic::EngineLoadGrByNet);
_updatePlacement( _placementUB ); kiteE->balanceGlobalDensity();
kiteE->layerAssign(Katabatic::EngineNoNetLayerAssign);
row_compatible_orientation( _circuit, legalizer, true ); kiteE->runNegociate();
swaps_global_HPWL( _circuit, legalizer, 3, 4 ); success = kiteE->getToolSuccess();
coloquinte::dp::get_result( _circuit, legalizer, _placementUB ); feedRoutingBack();
_progressReport1( startTime, " Global Swaps ..." ); kiteE->destroy();
if(placementUpdate <= LowerBound) KiteEngine::wipeOutRouting(_cell);
_updatePlacement( _placementUB ); if(success){
cmess2 << "The design is routable; exiting" << endl;
OSRP_convex_HPWL( _circuit, legalizer ); break;
//OSRP_noncvx_RSMT( _circuit, legalizer ); }
coloquinte::dp::get_result( _circuit, legalizer, _placementUB ); detailedPlace(detailedIterations, detailedEffort, detailedOptions);
_progressReport1( startTime, " Row Optimization" );
if(placementUpdate == UpdateAll)
_updatePlacement( _placementUB );
swaps_row_convex_HPWL( _circuit, legalizer, 4 );
//swaps_row_noncvx_RSMT( _circuit, legalizer, 4 );
coloquinte::dp::get_result( _circuit, legalizer, _placementUB );
_progressReport1( startTime, " Local Swaps ...." );
if(placementUpdate <= LowerBound)
_updatePlacement( _placementUB );
if (i == detailedIterations-1) {
swaps_row_convex_RSMT( _circuit, legalizer, 4 );
row_compatible_orientation( _circuit, legalizer, true );
coloquinte::dp::get_result( _circuit, legalizer, _placementUB );
verify_placement_legality( _circuit, _placementUB, _surface );
_progressReport1( startTime, " Final Legalize ." );
} }
} }
_updatePlacement( _placementUB );
cmess2 << " o Adding feed cells." << endl; cmess2 << " o Adding feed cells." << endl;
addFeeds(); addFeeds();
@ -796,9 +907,9 @@ namespace Etesian {
stopMeasures(); stopMeasures();
printMeasures( "total" ); printMeasures( "total" );
cmess1 << ::Dots::asString cmess1 << ::Dots::asString
( " - HPWL", DbU::getValueString( (DbU::Unit)get_HPWL_wirelength(_circuit,_placementUB )*getPitch() ) ) << endl; ( " - HPWL", DbU::getValueString( (DbU::Unit)coloquinte::gp::get_HPWL_wirelength(_circuit,_placementUB )*getPitch() ) ) << endl;
cmess1 << ::Dots::asString cmess1 << ::Dots::asString
( " - RMST", DbU::getValueString( (DbU::Unit)get_RSMT_wirelength(_circuit,_placementUB )*getPitch() ) ) << endl; ( " - RMST", DbU::getValueString( (DbU::Unit)coloquinte::gp::get_RSMT_wirelength(_circuit,_placementUB )*getPitch() ) ) << endl;
_placed = true; _placed = true;
@ -806,7 +917,7 @@ namespace Etesian {
} }
void EtesianEngine::_progressReport1 ( time_t startTime, string label ) const void EtesianEngine::_progressReport1 ( string label ) const
{ {
size_t w = label.size(); size_t w = label.size();
string indent ( w, ' ' ); string indent ( w, ' ' );
@ -816,20 +927,20 @@ namespace Etesian {
} }
ostringstream elapsed; ostringstream elapsed;
elapsed << " dTime:" << setw(5) << (time(NULL) - startTime) << "s "; //elapsed << " dTime:" << setw(5) << _timer.getCombTime() << "s ";
cmess2 << label << elapsed.str() cmess2 << label << elapsed.str()
<< " HPWL:" << coloquinte::gp::get_HPWL_wirelength( _circuit, _placementUB ) << " HPWL:" << setw(11) << coloquinte::gp::get_HPWL_wirelength( _circuit, _placementUB )
<< " RMST:" << coloquinte::gp::get_RSMT_wirelength( _circuit, _placementUB ) << " RMST:" << setw(11) << coloquinte::gp::get_RSMT_wirelength( _circuit, _placementUB )
<< endl; << endl;
cparanoid << indent cparanoid << indent
<< " Linear Disrupt.:" << coloquinte::gp::get_mean_linear_disruption ( _circuit, _placementLB, _placementUB ) << " Linear Disrupt.:" << setw(11) << coloquinte::gp::get_mean_linear_disruption ( _circuit, _placementLB, _placementUB )
<< " Quad Disrupt.:" << coloquinte::gp::get_mean_quadratic_disruption( _circuit, _placementLB, _placementUB ) << " Quad Disrupt.:" << setw(11) << coloquinte::gp::get_mean_quadratic_disruption( _circuit, _placementLB, _placementUB )
<< endl; << endl;
} }
void EtesianEngine::_progressReport2 ( time_t startTime, string label ) const void EtesianEngine::_progressReport2 ( string label ) const
{ {
size_t w = label.size(); size_t w = label.size();
string indent ( w, ' ' ); string indent ( w, ' ' );
@ -839,11 +950,11 @@ namespace Etesian {
} }
ostringstream elapsed; ostringstream elapsed;
elapsed << " dTime:" << setw(5) << (time(NULL) - startTime) << "s "; //elapsed << " dTime:" << setw(5) << _timer.getCombTime() << "s ";
cmess2 << label << elapsed.str() cmess2 << label << elapsed.str()
<< " HPWL:" << coloquinte::gp::get_HPWL_wirelength( _circuit, _placementLB ) << " HPWL:" << setw(11) << coloquinte::gp::get_HPWL_wirelength( _circuit, _placementLB )
<< " RMST:" << coloquinte::gp::get_RSMT_wirelength( _circuit, _placementLB ) << " RMST:" << setw(11) << coloquinte::gp::get_RSMT_wirelength( _circuit, _placementLB )
<< endl; << endl;
} }

3
etesian/src/etesian/Configuration.h
View File

@ -66,6 +66,7 @@ namespace Etesian {
inline Effort getPlaceEffort () const; inline Effort getPlaceEffort () const;
inline GraphicUpdate getUpdateConf () const; inline GraphicUpdate getUpdateConf () const;
inline Density getSpreadingConf () const; inline Density getSpreadingConf () const;
inline bool getRoutingDriven () const;
inline double getSpaceMargin () const; inline double getSpaceMargin () const;
inline double getAspectRatio () const; inline double getAspectRatio () const;
void print ( Cell* ) const; void print ( Cell* ) const;
@ -78,6 +79,7 @@ namespace Etesian {
Effort _placeEffort; Effort _placeEffort;
GraphicUpdate _updateConf; GraphicUpdate _updateConf;
Density _spreadingConf; Density _spreadingConf;
bool _routingDriven;
double _spaceMargin; double _spaceMargin;
double _aspectRatio; double _aspectRatio;
private: private:
@ -90,6 +92,7 @@ namespace Etesian {
inline Effort Configuration::getPlaceEffort () const { return _placeEffort; } inline Effort Configuration::getPlaceEffort () const { return _placeEffort; }
inline GraphicUpdate Configuration::getUpdateConf () const { return _updateConf; } inline GraphicUpdate Configuration::getUpdateConf () const { return _updateConf; }
inline Density Configuration::getSpreadingConf () const { return _spreadingConf; } inline Density Configuration::getSpreadingConf () const { return _spreadingConf; }
inline bool Configuration::getRoutingDriven () const { return _routingDriven; }
inline double Configuration::getSpaceMargin () const { return _spaceMargin; } inline double Configuration::getSpaceMargin () const { return _spaceMargin; }
inline double Configuration::getAspectRatio () const { return _aspectRatio; } inline double Configuration::getAspectRatio () const { return _aspectRatio; }

17
etesian/src/etesian/EtesianEngine.h
View File

@ -65,17 +65,28 @@ namespace Etesian {
inline Effort getPlaceEffort () const; inline Effort getPlaceEffort () const;
inline GraphicUpdate getUpdateConf () const; inline GraphicUpdate getUpdateConf () const;
inline Density getSpreadingConf () const; inline Density getSpreadingConf () const;
inline bool getRoutingDriven () const;
inline double getSpaceMargin () const; inline double getSpaceMargin () const;
inline double getAspectRatio () const; inline double getAspectRatio () const;
inline const FeedCells& getFeedCells () const; inline const FeedCells& getFeedCells () const;
inline void setCellWidget ( Hurricane::CellWidget* ); inline void setCellWidget ( Hurricane::CellWidget* );
void startMeasures (); void startMeasures ();
void stopMeasures (); void stopMeasures ();
void printMeasures ( std::string ) const; void printMeasures ( std::string ) const;
void setDefaultAb (); void setDefaultAb ();
void resetPlacement (); void resetPlacement ();
void toColoquinte (); void toColoquinte ();
void preplace ();
void roughLegalize ( float minDisruption, unsigned options );
void globalPlace ( float initPenalty, float minDisruption, float targetImprovement, float minInc, float maxInc, unsigned options=0 );
void detailedPlace ( int iterations, int effort, unsigned options=0 );
void feedRoutingBack ();
void place (); void place ();
inline void useFeed ( Cell* ); inline void useFeed ( Cell* );
size_t findYSpin (); size_t findYSpin ();
void addFeeds (); void addFeeds ();
@ -96,6 +107,7 @@ namespace Etesian {
coloquinte::netlist _circuit; coloquinte::netlist _circuit;
coloquinte::placement_t _placementLB; coloquinte::placement_t _placementLB;
coloquinte::placement_t _placementUB; coloquinte::placement_t _placementUB;
coloquinte::density_restrictions _densityLimits;
std::unordered_map<string,unsigned int> _cellsToIds; std::unordered_map<string,unsigned int> _cellsToIds;
std::vector<Instance*> _idsToInsts; std::vector<Instance*> _idsToInsts;
Hurricane::CellWidget* _cellWidget; Hurricane::CellWidget* _cellWidget;
@ -113,8 +125,8 @@ namespace Etesian {
EtesianEngine& operator= ( const EtesianEngine& ); EtesianEngine& operator= ( const EtesianEngine& );
private: private:
void _updatePlacement ( const coloquinte::placement_t& ); void _updatePlacement ( const coloquinte::placement_t& );
void _progressReport1 ( time_t startTime, string label ) const; void _progressReport1 ( string label ) const;
void _progressReport2 ( time_t startTime, string label ) const; void _progressReport2 ( string label ) const;
}; };
@ -126,6 +138,7 @@ namespace Etesian {
inline Effort EtesianEngine::getPlaceEffort () const { return getConfiguration()->getPlaceEffort(); } inline Effort EtesianEngine::getPlaceEffort () const { return getConfiguration()->getPlaceEffort(); }
inline GraphicUpdate EtesianEngine::getUpdateConf () const { return getConfiguration()->getUpdateConf(); } inline GraphicUpdate EtesianEngine::getUpdateConf () const { return getConfiguration()->getUpdateConf(); }
inline Density EtesianEngine::getSpreadingConf () const { return getConfiguration()->getSpreadingConf(); } inline Density EtesianEngine::getSpreadingConf () const { return getConfiguration()->getSpreadingConf(); }
inline bool EtesianEngine::getRoutingDriven () const { return getConfiguration()->getRoutingDriven(); }
inline double EtesianEngine::getSpaceMargin () const { return getConfiguration()->getSpaceMargin(); } inline double EtesianEngine::getSpaceMargin () const { return getConfiguration()->getSpaceMargin(); }
inline double EtesianEngine::getAspectRatio () const { return getConfiguration()->getAspectRatio(); } inline double EtesianEngine::getAspectRatio () const { return getConfiguration()->getAspectRatio(); }
inline void EtesianEngine::useFeed ( Cell* cell ) { _feedCells.useFeed(cell); } inline void EtesianEngine::useFeed ( Cell* cell ) { _feedCells.useFeed(cell); }

31
katabatic/src/GCell.cpp
View File

@ -545,21 +545,17 @@ namespace Katabatic {
return (float)( _box.getWidth () / Session::getPitch(2) + 1 ); return (float)( _box.getWidth () / Session::getPitch(2) + 1 );
} }
float GCell::getAverageHVDensity () const
float GCell::getDensity ( unsigned int flags ) const
{ {
if (not isValid() and not(flags & NoUpdate)) const_cast<GCell*>(this)->updateDensity();
float density = 0.0;
if (getGCellGrid()->getDensityMode() == GCellGrid::AverageHVDensity) {
// Average density of all layers mixeds together. // Average density of all layers mixeds together.
float density = 0.0;
for ( size_t i=0 ; i<_depth ; i++ ) for ( size_t i=0 ; i<_depth ; i++ )
density += _densities[i]; density += _densities[i];
return density / ((float)(_depth-_pinDepth));
}
//density = roundfp ( density/((float)(_depth-_pinDepth)) ); float GCell::getMaxHVDensity () const
density = density/((float)(_depth-_pinDepth)); {
} else if (getGCellGrid()->getDensityMode() == GCellGrid::MaxHVDensity) {
// Maximum density between all horizontal vs. all vertical layers. // Maximum density between all horizontal vs. all vertical layers.
size_t hplanes = 0; size_t hplanes = 0;
size_t vplanes = 0; size_t vplanes = 0;
@ -574,8 +570,19 @@ namespace Katabatic {
if (hplanes) hdensity /= hplanes; if (hplanes) hdensity /= hplanes;
if (vplanes) vdensity /= vplanes; if (vplanes) vdensity /= vplanes;
//density = roundfp ( (hdensity > vdensity) ? hdensity : vdensity ); return std::max(hdensity, vdensity);
density = (hdensity > vdensity) ? hdensity : vdensity; }
float GCell::getDensity ( unsigned int flags ) const
{
if (not isValid() and not(flags & NoUpdate)) const_cast<GCell*>(this)->updateDensity();
float density = 0.0;
if (getGCellGrid()->getDensityMode() == GCellGrid::AverageHVDensity) {
density = getAverageHVDensity();
} else if (getGCellGrid()->getDensityMode() == GCellGrid::MaxHVDensity) {
density = getMaxHVDensity();
} else if (getGCellGrid()->getDensityMode() == GCellGrid::AverageHDensity) { } else if (getGCellGrid()->getDensityMode() == GCellGrid::AverageHDensity) {
// Average density between all horizontal layers. // Average density between all horizontal layers.
size_t hplanes = 0; size_t hplanes = 0;

2
katabatic/src/katabatic/GCell.h
View File

@ -140,6 +140,8 @@ namespace Katabatic {
float getHCapacity () const; float getHCapacity () const;
float getVCapacity () const; float getVCapacity () const;
float getDensity ( unsigned int flags=0 ) const; float getDensity ( unsigned int flags=0 ) const;
float getAverageHVDensity () const;
float getMaxHVDensity () const;
inline float getCDensity ( unsigned int flags=0 ) const; inline float getCDensity ( unsigned int flags=0 ) const;
inline float getWDensity ( unsigned int depth, unsigned int flags=0 ) const; inline float getWDensity ( unsigned int depth, unsigned int flags=0 ) const;
inline DbU::Unit getBlockage ( unsigned int depth ) const; inline DbU::Unit getBlockage ( unsigned int depth ) const;

37
kite/src/KiteEngine.cpp
View File

@ -20,6 +20,7 @@
#include <iomanip> #include <iomanip>
#include "vlsisapd/utilities/Path.h" #include "vlsisapd/utilities/Path.h"
#include "hurricane/DebugSession.h" #include "hurricane/DebugSession.h"
#include "hurricane/UpdateSession.h"
#include "hurricane/Bug.h" #include "hurricane/Bug.h"
#include "hurricane/Error.h" #include "hurricane/Error.h"
#include "hurricane/Warning.h" #include "hurricane/Warning.h"
@ -176,7 +177,6 @@ namespace Kite {
return kite; return kite;
} }
void KiteEngine::_preDestroy () void KiteEngine::_preDestroy ()
{ {
ltrace(90) << "KiteEngine::_preDestroy()" << endl; ltrace(90) << "KiteEngine::_preDestroy()" << endl;
@ -208,6 +208,41 @@ namespace Kite {
ltraceout(90); ltraceout(90);
} }
void KiteEngine::wipeOutRouting( Cell * cell ){
if(KiteEngine::get(cell) != NULL or KatabaticEngine::get(cell) != NULL)
throw Error("Trying to wipe out a routing with a routing engine\n");
using namespace Hurricane;
UpdateSession::open();
forEach(Net*, inet, cell->getNets()){
if(NetRoutingExtension::isManualGlobalRoute(*inet))
continue;
// First pass: destroy the contacts
std::vector<Contact*> contactPointers;
forEach(Component*, icom, (*inet)->getComponents()){
Contact * contact = dynamic_cast<Contact*>(*icom);
if(contact){
contactPointers.push_back(contact);
}
}
for(Contact* contact : contactPointers)
contact->destroy();
// Second pass: destroy unconnected segments added by Knik as blockages
std::vector<Component*> compPointers;
forEach(Component*, icom, (*inet)->getComponents()){
Horizontal * h = dynamic_cast<Horizontal*>(*icom);
if(h){
compPointers.push_back(h);
}
Vertical * v = dynamic_cast<Vertical*>(*icom);
if(v){
compPointers.push_back(v);
}
}
for(Component* comp : compPointers)
comp->destroy();
}
UpdateSession::close();
}
KiteEngine::~KiteEngine () KiteEngine::~KiteEngine ()
{ delete _configuration; } { delete _configuration; }

1
kite/src/kite/KiteEngine.h
View File

@ -63,6 +63,7 @@ namespace Kite {
static const Name& staticGetName (); static const Name& staticGetName ();
static KiteEngine* create ( Cell* ); static KiteEngine* create ( Cell* );
static KiteEngine* get ( const Cell* ); static KiteEngine* get ( const Cell* );
static void wipeOutRouting ( Cell* );
public: public:
inline bool useClockTree () const; inline bool useClockTree () const;
inline CellViewer* getViewer () const; inline CellViewer* getViewer () const;

8
unicorn/CMakeLists.txt
View File

@ -34,6 +34,14 @@
#find_package(EQUINOX REQUIRED) #find_package(EQUINOX REQUIRED)
#find_package(SOLSTICE REQUIRED) #find_package(SOLSTICE REQUIRED)
if(WITH_OPENMP)
find_package(OpenMP REQUIRED)
add_definitions(${OpenMP_CXX_FLAGS})
set(CMAKE_MODULE_LINKER_FLAGS "${CMAKE_MODULE_LINKER_FLAGS} ${OpenMP_CXX_FLAGS}")
set(CMAKE_SHARED_LINKER_FLAGS "${CMAKE_SHARED_LINKER_FLAGS} ${OpenMP_CXX_FLAGS}")
set(CMAKE_EXE_LINKER_FLAGS "${CMAKE_EXE_LINKER_FLAGS} ${OpenMP_CXX_FLAGS}")
endif(WITH_OPENMP)
add_subdirectory(src) add_subdirectory(src)
add_subdirectory(python) add_subdirectory(python)
add_subdirectory(cmake_modules) add_subdirectory(cmake_modules)