ScheduleStage Class Reference

#include <schedule_stage.hh>

Classes
struct	ScheduleStageStats

Public Types
enum	SchNonRdyType {   SCH_SCALAR_ALU_NRDY, SCH_VECTOR_ALU_NRDY, SCH_VECTOR_MEM_ISSUE_NRDY, SCH_VECTOR_MEM_BUS_BUSY_NRDY,   SCH_VECTOR_MEM_COALESCER_NRDY, SCH_VECTOR_MEM_REQS_NRDY, SCH_CEDE_SIMD_NRDY, SCH_SCALAR_MEM_ISSUE_NRDY,   SCH_SCALAR_MEM_BUS_BUSY_NRDY, SCH_SCALAR_MEM_FIFO_NRDY, SCH_LOCAL_MEM_ISSUE_NRDY, SCH_LOCAL_MEM_BUS_BUSY_NRDY,   SCH_LOCAL_MEM_FIFO_NRDY, SCH_FLAT_MEM_ISSUE_NRDY, SCH_FLAT_MEM_BUS_BUSY_NRDY, SCH_FLAT_MEM_COALESCER_NRDY,   SCH_FLAT_MEM_REQS_NRDY, SCH_FLAT_MEM_FIFO_NRDY, SCH_RDY, SCH_NRDY_CONDITIONS }
enum	schopdnonrdytype_e { SCH_VRF_OPD_NRDY, SCH_SRF_OPD_NRDY, SCH_RF_OPD_NRDY, SCH_RF_OPD_NRDY_CONDITIONS }
enum	schrfaccessnonrdytype_e {   SCH_VRF_RD_ACCESS_NRDY, SCH_VRF_WR_ACCESS_NRDY, SCH_SRF_RD_ACCESS_NRDY, SCH_SRF_WR_ACCESS_NRDY,   SCH_RF_ACCESS_NRDY, SCH_RF_ACCESS_NRDY_CONDITIONS }
enum	SCH_STATUS { RFBUSY = 0, RFREADY }

Public Member Functions
	ScheduleStage (const ComputeUnitParams &p, ComputeUnit &cu, ScoreboardCheckToSchedule &from_scoreboard_check, ScheduleToExecute &to_execute)
	~ScheduleStage ()
void	init ()
void	exec ()
const std::string &	name () const
void	deleteFromSch (Wavefront *w)

Protected Attributes
ScheduleStage::ScheduleStageStats	stats

Private Member Functions
bool	addToSchList (int exeType, const GPUDynInstPtr &gpu_dyn_inst)
void	reinsertToSchList (int exeType, const GPUDynInstPtr &gpu_dyn_inst)
void	checkRfOperandReadComplete ()
void	checkMemResources ()
bool	dispatchReady (const GPUDynInstPtr &gpu_dyn_inst)
void	fillDispatchList ()
void	arbitrateVrfToLdsBus ()
void	scheduleRfDestOperands ()
bool	schedRfWrites (int exeType, const GPUDynInstPtr &gpu_dyn_inst)
void	reserveResources ()
void	doDispatchListTransition (int unitId, DISPATCH_STATUS s, const GPUDynInstPtr &gpu_dyn_inst)
void	doDispatchListTransition (int unitId, DISPATCH_STATUS s)

Private Attributes
ComputeUnit &	computeUnit
ScoreboardCheckToSchedule &	fromScoreboardCheck
ScheduleToExecute &	toExecute
std::vector< Scheduler >	scheduler
const std::string	_name
bool	vectorAluRdy
bool	scalarAluRdy
bool	scalarMemBusRdy
bool	scalarMemIssueRdy
bool	glbMemBusRdy
bool	glbMemIssueRdy
bool	locMemBusRdy
bool	locMemIssueRdy
std::unordered_set< uint64_t >	wavesInSch
std::vector< std::deque< std::pair< GPUDynInstPtr, SCH_STATUS > > >	schList

Detailed Description

Definition at line 61 of file schedule_stage.hh.

Member Enumeration Documentation

SCH_STATUS

enum ScheduleStage::SCH_STATUS

Enumerator
RFBUSY
RFREADY

Definition at line 114 of file schedule_stage.hh.

SchNonRdyType

enum ScheduleStage::SchNonRdyType

Enumerator
SCH_SCALAR_ALU_NRDY
SCH_VECTOR_ALU_NRDY
SCH_VECTOR_MEM_ISSUE_NRDY
SCH_VECTOR_MEM_BUS_BUSY_NRDY
SCH_VECTOR_MEM_COALESCER_NRDY
SCH_VECTOR_MEM_REQS_NRDY
SCH_CEDE_SIMD_NRDY
SCH_SCALAR_MEM_ISSUE_NRDY
SCH_SCALAR_MEM_BUS_BUSY_NRDY
SCH_SCALAR_MEM_FIFO_NRDY
SCH_LOCAL_MEM_ISSUE_NRDY
SCH_LOCAL_MEM_BUS_BUSY_NRDY
SCH_LOCAL_MEM_FIFO_NRDY
SCH_FLAT_MEM_ISSUE_NRDY
SCH_FLAT_MEM_BUS_BUSY_NRDY
SCH_FLAT_MEM_COALESCER_NRDY
SCH_FLAT_MEM_REQS_NRDY
SCH_FLAT_MEM_FIFO_NRDY
SCH_RDY
SCH_NRDY_CONDITIONS

Definition at line 73 of file schedule_stage.hh.

schopdnonrdytype_e

enum ScheduleStage::schopdnonrdytype_e

Enumerator
SCH_VRF_OPD_NRDY
SCH_SRF_OPD_NRDY
SCH_RF_OPD_NRDY
SCH_RF_OPD_NRDY_CONDITIONS

Definition at line 95 of file schedule_stage.hh.

schrfaccessnonrdytype_e

enum ScheduleStage::schrfaccessnonrdytype_e

Enumerator
SCH_VRF_RD_ACCESS_NRDY
SCH_VRF_WR_ACCESS_NRDY
SCH_SRF_RD_ACCESS_NRDY
SCH_SRF_WR_ACCESS_NRDY
SCH_RF_ACCESS_NRDY
SCH_RF_ACCESS_NRDY_CONDITIONS

Definition at line 101 of file schedule_stage.hh.

Constructor & Destructor Documentation

ScheduleStage()

ScheduleStage::ScheduleStage	(	const ComputeUnitParams &	p,
		ComputeUnit &	cu,
		ScoreboardCheckToSchedule &	from_scoreboard_check,
		ScheduleToExecute &	to_execute
	)

Definition at line 46 of file schedule_stage.cc.

References MipsISA::dq, ArmISA::j, ComputeUnit::numExeUnits(), MipsISA::p, scheduler, schList, and wavesInSch.

~ScheduleStage()

ScheduleStage::~ScheduleStage

(

)

Definition at line 66 of file schedule_stage.cc.

References scheduler, schList, and wavesInSch.

Member Function Documentation

addToSchList()

bool ScheduleStage::addToSchList ( int  exeType, const GPUDynInstPtr &  gpu_dyn_inst  )

private

Definition at line 292 of file schedule_stage.cc.

References computeUnit, DPRINTF, Wavefront::hasBarrier(), ComputeUnit::insertInPipeMap(), Wavefront::isOldestInstBarrier(), Wavefront::isOldestInstSleep(), Wavefront::isOldestInstWaitcnt(), ScheduleStage::ScheduleStageStats::rfAccessStalls, RFBUSY, Wavefront::S_BARRIER, Wavefront::S_STALLED_SLEEP, Wavefront::S_WAITCNT, SCH_RF_ACCESS_NRDY, SCH_SRF_RD_ACCESS_NRDY, SCH_VRF_RD_ACCESS_NRDY, schList, Wavefront::WavefrontStats::schRfAccessStalls, Wavefront::WavefrontStats::schStalls, Wavefront::setStatus(), Wavefront::simdId, ComputeUnit::srf, stats, Wavefront::stats, ComputeUnit::vrf, wavesInSch, and Wavefront::wfDynId.

Referenced by exec().

arbitrateVrfToLdsBus()

void ScheduleStage::arbitrateVrfToLdsBus ( )

private

Definition at line 618 of file schedule_stage.cc.

References computeUnit, ScheduleToExecute::dispatchStatus(), doDispatchListTransition(), DPRINTF, EXREADY, ComputeUnit::firstMemUnit(), ArmISA::i, ScheduleStage::ScheduleStageStats::ldsBusArbStalls, Wavefront::localMem, ComputeUnit::numVectorGlobalMemUnits, ScheduleToExecute::readyInst(), reinsertToSchList(), SKIP, stats, and toExecute.

Referenced by exec().

checkMemResources()

void ScheduleStage::checkMemResources ( )

private

Definition at line 376 of file schedule_stage.cc.

References computeUnit, glbMemBusRdy, glbMemIssueRdy, locMemBusRdy, locMemIssueRdy, WaitClass::rdy(), scalarMemBusRdy, scalarMemIssueRdy, ComputeUnit::scalarMemUnit, ComputeUnit::srfToScalarMemPipeBus, ComputeUnit::vectorGlobalMemUnit, ComputeUnit::vectorSharedMemUnit, ComputeUnit::vrfToGlobalMemPipeBus, and ComputeUnit::vrfToLocalMemPipeBus.

Referenced by fillDispatchList().

checkRfOperandReadComplete()

void ScheduleStage::checkRfOperandReadComplete ( )

private

Definition at line 659 of file schedule_stage.cc.

References computeUnit, DPRINTF, ArmISA::j, ComputeUnit::numExeUnits(), ScheduleStage::ScheduleStageStats::opdNrdyStalls, MipsISA::p, RFBUSY, RFREADY, SCH_RF_OPD_NRDY, SCH_SRF_OPD_NRDY, SCH_VRF_OPD_NRDY, Wavefront::WavefrontStats::schCycles, schList, Wavefront::WavefrontStats::schOpdNrdyStalls, Wavefront::WavefrontStats::schStalls, Wavefront::simdId, ComputeUnit::srf, stats, Wavefront::stats, ComputeUnit::vrf, and Wavefront::wfDynId.

Referenced by exec().

deleteFromSch()

void ScheduleStage::deleteFromSch

(

Wavefront *

w

)

Definition at line 781 of file schedule_stage.cc.

References MipsISA::w, and wavesInSch.

dispatchReady()

bool ScheduleStage::dispatchReady ( const GPUDynInstPtr &  gpu_dyn_inst )

private

Definition at line 414 of file schedule_stage.cc.

References GlobalMemPipeline::coalescerReady(), computeUnit, ScheduleStage::ScheduleStageStats::dispNrdyStalls, glbMemBusRdy, glbMemIssueRdy, ComputeUnit::globalMemoryPipe, ScalarMemPipeline::isGMReqFIFOWrRdy(), ComputeUnit::localMemoryPipe, locMemBusRdy, locMemIssueRdy, GlobalMemPipeline::outstandingReqsCheck(), panic, Wavefront::rdLmReqsInPipe, Wavefront::scalarAlu, scalarAluRdy, ComputeUnit::scalarALUs, scalarMemBusRdy, scalarMemIssueRdy, ComputeUnit::scalarMemoryPipe, Wavefront::scalarRdGmReqsInPipe, Wavefront::scalarWrGmReqsInPipe, SCH_FLAT_MEM_BUS_BUSY_NRDY, SCH_FLAT_MEM_COALESCER_NRDY, SCH_FLAT_MEM_FIFO_NRDY, SCH_FLAT_MEM_ISSUE_NRDY, SCH_FLAT_MEM_REQS_NRDY, SCH_LOCAL_MEM_BUS_BUSY_NRDY, SCH_LOCAL_MEM_FIFO_NRDY, SCH_LOCAL_MEM_ISSUE_NRDY, SCH_RDY, SCH_SCALAR_ALU_NRDY, SCH_SCALAR_MEM_BUS_BUSY_NRDY, SCH_SCALAR_MEM_FIFO_NRDY, SCH_SCALAR_MEM_ISSUE_NRDY, SCH_VECTOR_ALU_NRDY, SCH_VECTOR_MEM_BUS_BUSY_NRDY, SCH_VECTOR_MEM_COALESCER_NRDY, SCH_VECTOR_MEM_ISSUE_NRDY, SCH_VECTOR_MEM_REQS_NRDY, Wavefront::simdId, stats, vectorAluRdy, ComputeUnit::vectorALUs, and Wavefront::wrLmReqsInPipe.

Referenced by fillDispatchList().

doDispatchListTransition() [1/2]

void ScheduleStage::doDispatchListTransition ( int  unitId, DISPATCH_STATUS  s  )

private

Definition at line 218 of file schedule_stage.cc.

References ScheduleToExecute::dispatchTransition(), ArmISA::s, and toExecute.

doDispatchListTransition() [2/2]

void ScheduleStage::doDispatchListTransition ( int  unitId, DISPATCH_STATUS  s, const GPUDynInstPtr &  gpu_dyn_inst  )

private

Definition at line 211 of file schedule_stage.cc.

References ScheduleToExecute::dispatchTransition(), ArmISA::s, and toExecute.

Referenced by arbitrateVrfToLdsBus(), fillDispatchList(), and scheduleRfDestOperands().

exec()

void ScheduleStage::exec

(

)

Remove any wave that already has an instruction present in SCH waiting for RF reads to complete. This prevents out of order execution within a wave.

Definition at line 88 of file schedule_stage.cc.

References addToSchList(), ScheduleStage::ScheduleStageStats::addToSchListStalls, arbitrateVrfToLdsBus(), checkRfOperandReadComplete(), computeUnit, fillDispatchList(), ComputeUnit::firstMemUnit(), fromScoreboardCheck, Wavefront::incExpInstsIssued(), Wavefront::incLGKMInstsIssued(), Wavefront::incVMemInstsIssued(), Wavefront::instructionBuffer, ArmISA::j, ComputeUnit::lastMemUnit(), ComputeUnit::numExeUnits(), ScheduleStage::ScheduleStageStats::rdyListEmpty, ScheduleStage::ScheduleStageStats::rdyListNotEmpty, ScoreboardCheckToSchedule::readyWFs(), reserveResources(), ScheduleToExecute::reset(), Wavefront::WavefrontStats::schCycles, scheduler, scheduleRfDestOperands(), stats, Wavefront::stats, toExecute, ScoreboardCheckToSchedule::updateReadyList(), and wavesInSch.

Referenced by ComputeUnit::exec().

fillDispatchList()

void ScheduleStage::fillDispatchList ( )

private

Definition at line 554 of file schedule_stage.cc.

References GlobalMemPipeline::acqCoalescerToken(), checkMemResources(), computeUnit, dispatchReady(), ScheduleToExecute::dispatchStatus(), doDispatchListTransition(), DPRINTF, EMPTY, EXREADY, ComputeUnit::globalMemoryPipe, ArmISA::j, ArmISA::mp, ComputeUnit::numExeUnits(), RFREADY, schList, ScheduleStage::ScheduleStageStats::schListToDispList, ScheduleStage::ScheduleStageStats::schListToDispListStalls, stats, and toExecute.

Referenced by exec().

init()

void ScheduleStage::init

(

)

Definition at line 74 of file schedule_stage.cc.

References computeUnit, fatal_if, fromScoreboardCheck, ArmISA::j, ComputeUnit::numExeUnits(), ScoreboardCheckToSchedule::numReadyLists(), ComputeUnit::numVectorGlobalMemUnits, ComputeUnit::numVectorSharedMemUnits, ScoreboardCheckToSchedule::readyWFs(), and scheduler.

Referenced by ComputeUnit::init().

name()

const std::string& ScheduleStage::name ( ) const

inline

Definition at line 72 of file schedule_stage.hh.

References _name.

reinsertToSchList()

void ScheduleStage::reinsertToSchList ( int  exeType, const GPUDynInstPtr &  gpu_dyn_inst  )

private

Definition at line 360 of file schedule_stage.cc.

References RFREADY, and schList.

Referenced by arbitrateVrfToLdsBus(), and scheduleRfDestOperands().

reserveResources()

void ScheduleStage::reserveResources ( )

private

Definition at line 715 of file schedule_stage.cc.

References computeUnit, ScheduleToExecute::dispatchStatus(), DPRINTF, EMPTY, EXREADY, Wavefront::globalMem, ArmISA::j, Wavefront::localMem, ComputeUnit::numExeUnits(), panic_if, ScheduleToExecute::readyInst(), Wavefront::reserveResources(), ArmISA::s, Wavefront::simdId, SKIP, ComputeUnit::srf, ArmISA::ss, toExecute, ComputeUnit::vrf, and Wavefront::wfDynId.

Referenced by exec().

schedRfWrites()

bool ScheduleStage::schedRfWrites ( int  exeType, const GPUDynInstPtr &  gpu_dyn_inst  )

private

Definition at line 224 of file schedule_stage.cc.

References computeUnit, ScheduleStage::ScheduleStageStats::rfAccessStalls, SCH_RF_ACCESS_NRDY, SCH_SRF_WR_ACCESS_NRDY, SCH_VRF_WR_ACCESS_NRDY, Wavefront::WavefrontStats::schRfAccessStalls, Wavefront::WavefrontStats::schStalls, Wavefront::simdId, ComputeUnit::srf, stats, Wavefront::stats, and ComputeUnit::vrf.

Referenced by scheduleRfDestOperands().

scheduleRfDestOperands()

void ScheduleStage::scheduleRfDestOperands ( )

private

Definition at line 260 of file schedule_stage.cc.

References computeUnit, ScheduleToExecute::dispatchStatus(), doDispatchListTransition(), EMPTY, Wavefront::instructionBuffer, ArmISA::j, Wavefront::localMem, ComputeUnit::numExeUnits(), ScheduleToExecute::readyInst(), reinsertToSchList(), schedRfWrites(), SKIP, and toExecute.

Referenced by exec().

Member Data Documentation

_name

const std::string ScheduleStage::_name

private

Definition at line 129 of file schedule_stage.hh.

Referenced by name().

computeUnit

ComputeUnit& ScheduleStage::computeUnit

private

Definition at line 121 of file schedule_stage.hh.

Referenced by addToSchList(), arbitrateVrfToLdsBus(), checkMemResources(), checkRfOperandReadComplete(), dispatchReady(), exec(), fillDispatchList(), init(), reserveResources(), schedRfWrites(), and scheduleRfDestOperands().

fromScoreboardCheck

ScoreboardCheckToSchedule& ScheduleStage::fromScoreboardCheck

private

Definition at line 122 of file schedule_stage.hh.

Referenced by exec(), and init().

glbMemBusRdy

bool ScheduleStage::glbMemBusRdy

private

Definition at line 143 of file schedule_stage.hh.

Referenced by checkMemResources(), and dispatchReady().

glbMemIssueRdy

bool ScheduleStage::glbMemIssueRdy

private

Definition at line 144 of file schedule_stage.hh.

Referenced by checkMemResources(), and dispatchReady().

locMemBusRdy

bool ScheduleStage::locMemBusRdy

private

Definition at line 145 of file schedule_stage.hh.

Referenced by checkMemResources(), and dispatchReady().

locMemIssueRdy

bool ScheduleStage::locMemIssueRdy

private

Definition at line 146 of file schedule_stage.hh.

Referenced by checkMemResources(), and dispatchReady().

scalarAluRdy

bool ScheduleStage::scalarAluRdy

private

Definition at line 140 of file schedule_stage.hh.

Referenced by dispatchReady().

scalarMemBusRdy

bool ScheduleStage::scalarMemBusRdy

private

Definition at line 141 of file schedule_stage.hh.

Referenced by checkMemResources(), and dispatchReady().

scalarMemIssueRdy

bool ScheduleStage::scalarMemIssueRdy

private

Definition at line 142 of file schedule_stage.hh.

Referenced by checkMemResources(), and dispatchReady().

scheduler

std::vector<Scheduler> ScheduleStage::scheduler

private

Definition at line 127 of file schedule_stage.hh.

Referenced by exec(), init(), ScheduleStage(), and ~ScheduleStage().

schList

std::vector<std::deque<std::pair<GPUDynInstPtr, SCH_STATUS> > > ScheduleStage::schList

private

Definition at line 181 of file schedule_stage.hh.

Referenced by addToSchList(), checkRfOperandReadComplete(), fillDispatchList(), reinsertToSchList(), ScheduleStage(), and ~ScheduleStage().

stats

ScheduleStage::ScheduleStageStats ScheduleStage::stats

protected

Referenced by addToSchList(), arbitrateVrfToLdsBus(), checkRfOperandReadComplete(), dispatchReady(), exec(), fillDispatchList(), and schedRfWrites().

toExecute

ScheduleToExecute& ScheduleStage::toExecute

private

Definition at line 123 of file schedule_stage.hh.

Referenced by arbitrateVrfToLdsBus(), doDispatchListTransition(), exec(), fillDispatchList(), reserveResources(), and scheduleRfDestOperands().

vectorAluRdy

bool ScheduleStage::vectorAluRdy

private

Definition at line 139 of file schedule_stage.hh.

Referenced by dispatchReady().

wavesInSch

std::unordered_set<uint64_t> ScheduleStage::wavesInSch

private

Definition at line 170 of file schedule_stage.hh.

Referenced by addToSchList(), deleteFromSch(), exec(), ScheduleStage(), and ~ScheduleStage().

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The documentation for this class was generated from the following files:

• gpu-compute/schedule_stage.hh
• gpu-compute/schedule_stage.cc