Hybrid NVM + DRAM specific generator is for issuing request with variable buffer hit length and bank utilization. More...

#include <hybrid_gen.hh>

Inheritance diagram for gem5::HybridGen:

Public Member Functions
	HybridGen (SimObject &obj, RequestorID requestor_id, Tick _duration, Addr start_addr_dram, Addr end_addr_dram, Addr blocksize_dram, Addr start_addr_nvm, Addr end_addr_nvm, Addr blocksize_nvm, Addr cacheline_size, Tick min_period, Tick max_period, uint8_t read_percent, Addr data_limit, unsigned int num_seq_pkts_dram, unsigned int page_size_dram, unsigned int nbr_of_banks_dram, unsigned int nbr_of_banks_util_dram, unsigned int num_seq_pkts_nvm, unsigned int buffer_size_nvm, unsigned int nbr_of_banks_nvm, unsigned int nbr_of_banks_util_nvm, enums::AddrMap addr_mapping, unsigned int nbr_of_ranks_dram, unsigned int nbr_of_ranks_nvm, uint8_t nvm_percent)
	Create a hybrid DRAM + NVM address sequence generator.

void	enter ()
	Enter this generator state.

PacketPtr	getNextPacket ()
	Get the next generated packet.

void	genStartAddr (unsigned int new_bank, unsigned int new_rank)
	Insert bank, rank, and column bits into packed address to create address for 1st command in a series.

Tick	nextPacketTick (bool elastic, Tick delay) const
	Determine the tick when the next packet is available.

Public Member Functions inherited from gem5::BaseGen
	BaseGen (SimObject &obj, RequestorID requestor_id, Tick _duration)
	Create a base generator.

virtual	~BaseGen ()

std::string	name () const
	Get the name, useful for DPRINTFs.

virtual void	exit ()
	Exit this generator state.

Protected Attributes
const Addr	startAddrDram
	Start of DRAM address range.

const Addr	endAddrDram
	End of DRAM address range.

const Addr	blocksizeDram
	Blocksize and address increment for DRAM.

const Addr	startAddrNvm
	Start of DRAM address range.

const Addr	endAddrNvm
	End of DRAM address range.

const Addr	blocksizeNvm
	Blocksize and address increment for DRAM.

const Addr	cacheLineSize
	Cache line size in the simulated system.

const Tick	minPeriod
	Request generation period.

const Tick	maxPeriod

const uint8_t	readPercent
	Percent of generated transactions that should be reads.

const Addr	dataLimit
	Maximum amount of data to manipulate.

const unsigned int	numSeqPktsDram
	Number of sequential packets to be generated per cpu request.

const unsigned int	numSeqPktsNvm

unsigned int	countNumSeqPkts
	Track number of sequential packets generated for a request

Addr	addr
	Address of request.

const unsigned int	pageSizeDram
	Page size of DRAM.

const unsigned int	pageBitsDram
	Number of page bits in DRAM address.

const unsigned int	bankBitsDram
	Number of bank bits in DRAM address.

const unsigned int	blockBitsDram
	Number of block bits in DRAM address.

const unsigned int	nbrOfBanksDram
	Number of banks in DRAM.

const unsigned int	nbrOfBanksUtilDram
	Number of banks to be utilized for a given configuration.

const unsigned int	bufferSizeNvm
	Buffer size of NVM.

const unsigned int	pageBitsNvm
	Number of buffer bits in NVM address.

const unsigned int	bankBitsNvm
	Number of bank bits in NVM address.

const unsigned int	blockBitsNvm
	Number of block bits in NVM address.

const unsigned int	nbrOfBanksNvm
	Number of banks in NVM.

const unsigned int	nbrOfBanksUtilNvm
	Number of banks to be utilized for a given configuration.

enums::AddrMap	addrMapping
	Address mapping to be used.

const unsigned int	nbrOfRanksDram
	Number of ranks to be utilized for a given configuration.

const unsigned int	rankBitsDram
	Number of rank bits in DRAM address.

const unsigned int	nbrOfRanksNvm
	Number of ranks to be utilized for a given configuration.

const unsigned int	rankBitsNvm
	Number of rank bits in DRAM address.

const uint8_t	nvmPercent
	Percent of generated transactions that should go to NVM.

bool	isRead
	Remember type of requests to be generated in series.

bool	isNvm
	Remember the interface to be generated in series.

Addr	dataManipulated
	Counter to determine the amount of data manipulated.

unsigned int	numSeqPkts
	Number of sequential DRAM packets to be generated per cpu request.

Addr	startAddr
	Start of address range.

Addr	endAddr
	End of address range.

Addr	blocksize
	Blocksize and address increment.

unsigned int	pageSize
	Page size of DRAM.

unsigned int	pageBits
	Number of page bits in DRAM address.

unsigned int	bankBits
	Number of bank bits in DRAM address.

unsigned int	blockBits
	Number of block bits in DRAM address.

unsigned int	nbrOfBanks
	Number of banks in DRAM.

unsigned int	nbrOfBanksUtil
	Number of banks to be utilized for a given configuration.

unsigned int	nbrOfRanks
	Number of ranks to be utilized for a given configuration.

unsigned int	rankBits
	Number of rank bits in DRAM address.

Protected Attributes inherited from gem5::BaseGen
const std::string	_name
	Name to use for status and debug printing.

const RequestorID	requestorId
	The RequestorID used for generating requests.

Additional Inherited Members
Public Attributes inherited from gem5::BaseGen
const Tick	duration
	Time to spend in this state.

Protected Member Functions inherited from gem5::BaseGen
PacketPtr	getPacket (Addr addr, unsigned size, const MemCmd &cmd, Request::FlagsType flags=0)
	Generate a new request and associated packet.

Detailed Description

Hybrid NVM + DRAM specific generator is for issuing request with variable buffer hit length and bank utilization.

Currently assumes a single channel configuration.

Definition at line 61 of file hybrid_gen.hh.

Constructor & Destructor Documentation

◆ HybridGen()

gem5::HybridGen::HybridGen	(	SimObject &	obj,
		RequestorID	requestor_id,
		Tick	_duration,
		Addr	start_addr_dram,
		Addr	end_addr_dram,
		Addr	blocksize_dram,
		Addr	start_addr_nvm,
		Addr	end_addr_nvm,
		Addr	blocksize_nvm,
		Addr	cacheline_size,
		Tick	min_period,
		Tick	max_period,
		uint8_t	read_percent,
		Addr	data_limit,
		unsigned int	num_seq_pkts_dram,
		unsigned int	page_size_dram,
		unsigned int	nbr_of_banks_dram,
		unsigned int	nbr_of_banks_util_dram,
		unsigned int	num_seq_pkts_nvm,
		unsigned int	buffer_size_nvm,
		unsigned int	nbr_of_banks_nvm,
		unsigned int	nbr_of_banks_util_nvm,
		enums::AddrMap	addr_mapping,
		unsigned int	nbr_of_ranks_dram,
		unsigned int	nbr_of_ranks_nvm,
		uint8_t	nvm_percent )

Create a hybrid DRAM + NVM address sequence generator.

Parameters

obj	SimObject owning this sequence generator
requestor_id	RequestorID related to the memory requests
_duration	duration of this state before transitioning
start_addr_dram	Start address for DRAM range
end_addr_dram	End address for DRAM range
_blocksize_dram	Size used for transactions injected
start_addr_nvm	Start address for NVM range
end_addr_nvm	End address for NVM range
_blocksize_nvm	Size used for transactions injected
cacheline_size	cache line size in the system
min_period	Lower limit of random inter-transaction time
max_period	Upper limit of random inter-transaction time
read_percent	Percent of transactions that are reads
data_limit	Upper limit on how much data to read/write
num_seq_pkts_dram	Number of packets per stride, each _blocksize
page_size_dram	Buffer size (bytes) used in the NVM
nbr_of_banks_dram	Total number of parallel banks in NVM
nbr_of_banks_util_dram	Number of banks to utilized, for N banks, we will use banks: 0->(N-1)
num_seq_pkts_nvm	Number of packets per stride, each _blocksize
buffer_size_nvm	Buffer size (bytes) used in the NVM
nbr_of_banks_nvm	Total number of parallel banks in NVM
nbr_of_banks_util_nvm	Number of banks to utilized, for N banks, we will use banks: 0->(N-1)
addr_mapping	Address mapping to be used, assumes single channel system
nbr_of_ranks_dram	Number of DRAM ranks
nbr_of_ranks_nvm	Number of NVM ranks
nvm_percent	Percentage of traffic going to NVM

Definition at line 50 of file hybrid_gen.cc.

References blocksizeDram, blocksizeNvm, cacheLineSize, fatal, maxPeriod, minPeriod, gem5::BaseGen::name(), nbrOfBanksDram, nbrOfBanksNvm, nbrOfBanksUtilDram, nbrOfBanksUtilNvm, and readPercent.

Member Function Documentation

◆ enter()

void gem5::HybridGen::enter ( )

virtual

Enter this generator state.

Implements gem5::BaseGen.

Definition at line 132 of file hybrid_gen.cc.

References dataManipulated.

◆ genStartAddr()

void gem5::HybridGen::genStartAddr	(	unsigned int	new_bank,
		unsigned int	new_rank )

Insert bank, rank, and column bits into packed address to create address for 1st command in a series.

Parameters

new_bank	Bank number of next packet series
new_rank	Rank value of next packet series

Definition at line 238 of file hybrid_gen.cc.

References addr, addrMapping, bankBits, blockBits, blocksize, endAddr, numSeqPkts, pageBits, pageSize, gem5::Random::random(), gem5::random_mt, rankBits, gem5::replaceBits(), and startAddr.

Referenced by getNextPacket().

◆ getNextPacket()

PacketPtr gem5::HybridGen::getNextPacket ( )

virtual

Get the next generated packet.

Returns: A packet to be sent at the current tick

Implements gem5::BaseGen.

Definition at line 139 of file hybrid_gen.cc.

References addr, addrMapping, bankBits, bankBitsDram, bankBitsNvm, blockBits, blockBitsDram, blockBitsNvm, blocksize, blocksizeDram, blocksizeNvm, bufferSizeNvm, countNumSeqPkts, dataManipulated, DPRINTF, endAddr, endAddrDram, endAddrNvm, genStartAddr(), gem5::BaseGen::getPacket(), isNvm, isRead, nbrOfBanks, nbrOfBanksDram, nbrOfBanksNvm, nbrOfBanksUtil, nbrOfBanksUtilDram, nbrOfBanksUtilNvm, nbrOfRanks, nbrOfRanksDram, nbrOfRanksNvm, numSeqPkts, numSeqPktsDram, numSeqPktsNvm, nvmPercent, pageBits, pageBitsDram, pageBitsNvm, pageSize, pageSizeDram, gem5::Random::random(), gem5::random_mt, rankBits, rankBitsDram, rankBitsNvm, readPercent, gem5::MemCmd::ReadReq, gem5::replaceBits(), startAddr, startAddrDram, startAddrNvm, and gem5::MemCmd::WriteReq.

◆ nextPacketTick()

Tick gem5::HybridGen::nextPacketTick	(	bool	elastic,
		Tick	delay ) const

virtual

Determine the tick when the next packet is available.

MaxTick means that there will not be any further packets in the current activation cycle of the generator.

Parameters

elastic	should the injection respond to flow control or not
delay	time the previous packet spent waiting

Returns: next tick when a packet is available

Implements gem5::BaseGen.

Definition at line 287 of file hybrid_gen.cc.

References gem5::curTick(), dataLimit, dataManipulated, DPRINTF, maxPeriod, gem5::MaxTick, minPeriod, gem5::Random::random(), and gem5::random_mt.

Member Data Documentation

◆ addr

Addr gem5::HybridGen::addr

protected

Address of request.

Definition at line 171 of file hybrid_gen.hh.

Referenced by genStartAddr(), and getNextPacket().

◆ addrMapping

enums::AddrMap gem5::HybridGen::addrMapping

protected

Address mapping to be used.

Definition at line 210 of file hybrid_gen.hh.

Referenced by genStartAddr(), and getNextPacket().

◆ bankBits

unsigned int gem5::HybridGen::bankBits

protected

Number of bank bits in DRAM address.

Definition at line 259 of file hybrid_gen.hh.

Referenced by genStartAddr(), and getNextPacket().

◆ bankBitsDram

const unsigned int gem5::HybridGen::bankBitsDram

protected

Number of bank bits in DRAM address.

Definition at line 180 of file hybrid_gen.hh.

Referenced by getNextPacket().

◆ bankBitsNvm

const unsigned int gem5::HybridGen::bankBitsNvm

protected

Number of bank bits in NVM address.

Definition at line 198 of file hybrid_gen.hh.

Referenced by getNextPacket().

◆ blockBits

unsigned int gem5::HybridGen::blockBits

protected

Number of block bits in DRAM address.

Definition at line 262 of file hybrid_gen.hh.

Referenced by genStartAddr(), and getNextPacket().

◆ blockBitsDram

const unsigned int gem5::HybridGen::blockBitsDram

protected

Number of block bits in DRAM address.

Definition at line 183 of file hybrid_gen.hh.

Referenced by getNextPacket().

◆ blockBitsNvm

const unsigned int gem5::HybridGen::blockBitsNvm

protected

Number of block bits in NVM address.

Definition at line 201 of file hybrid_gen.hh.

Referenced by getNextPacket().

◆ blocksize

Addr gem5::HybridGen::blocksize

protected

Blocksize and address increment.

Definition at line 250 of file hybrid_gen.hh.

Referenced by genStartAddr(), and getNextPacket().

◆ blocksizeDram

const Addr gem5::HybridGen::blocksizeDram

protected

Blocksize and address increment for DRAM.

Definition at line 139 of file hybrid_gen.hh.

Referenced by getNextPacket(), and HybridGen().

◆ blocksizeNvm

const Addr gem5::HybridGen::blocksizeNvm

protected

Blocksize and address increment for DRAM.

Definition at line 148 of file hybrid_gen.hh.

Referenced by getNextPacket(), and HybridGen().

◆ bufferSizeNvm

const unsigned int gem5::HybridGen::bufferSizeNvm

protected

Buffer size of NVM.

Definition at line 192 of file hybrid_gen.hh.

Referenced by getNextPacket().

◆ cacheLineSize

const Addr gem5::HybridGen::cacheLineSize

protected

Cache line size in the simulated system.

Definition at line 151 of file hybrid_gen.hh.

Referenced by HybridGen().

◆ countNumSeqPkts

unsigned int gem5::HybridGen::countNumSeqPkts

protected

Track number of sequential packets generated for a request

Definition at line 168 of file hybrid_gen.hh.

Referenced by getNextPacket().

◆ dataLimit

const Addr gem5::HybridGen::dataLimit

protected

Maximum amount of data to manipulate.

Definition at line 161 of file hybrid_gen.hh.

Referenced by nextPacketTick().

◆ dataManipulated

Addr gem5::HybridGen::dataManipulated

protected

Counter to determine the amount of data manipulated.

Used to determine if we should continue generating requests.

Definition at line 238 of file hybrid_gen.hh.

Referenced by enter(), getNextPacket(), and nextPacketTick().

◆ endAddr

Addr gem5::HybridGen::endAddr

protected

End of address range.

Definition at line 247 of file hybrid_gen.hh.

Referenced by genStartAddr(), and getNextPacket().

◆ endAddrDram

const Addr gem5::HybridGen::endAddrDram

protected

End of DRAM address range.

Definition at line 136 of file hybrid_gen.hh.

Referenced by getNextPacket().

◆ endAddrNvm

const Addr gem5::HybridGen::endAddrNvm

protected

End of DRAM address range.

Definition at line 145 of file hybrid_gen.hh.

Referenced by getNextPacket().

◆ isNvm

bool gem5::HybridGen::isNvm

protected

Remember the interface to be generated in series.

Definition at line 231 of file hybrid_gen.hh.

Referenced by getNextPacket().

◆ isRead

bool gem5::HybridGen::isRead

protected

Remember type of requests to be generated in series.

Definition at line 228 of file hybrid_gen.hh.

Referenced by getNextPacket().

◆ maxPeriod

const Tick gem5::HybridGen::maxPeriod

protected

Definition at line 155 of file hybrid_gen.hh.

Referenced by HybridGen(), and nextPacketTick().

◆ minPeriod

const Tick gem5::HybridGen::minPeriod

protected

Request generation period.

Definition at line 154 of file hybrid_gen.hh.

Referenced by HybridGen(), and nextPacketTick().

◆ nbrOfBanks

unsigned int gem5::HybridGen::nbrOfBanks

protected

Number of banks in DRAM.

Definition at line 265 of file hybrid_gen.hh.

Referenced by getNextPacket().

◆ nbrOfBanksDram

const unsigned int gem5::HybridGen::nbrOfBanksDram

protected

Number of banks in DRAM.

Definition at line 186 of file hybrid_gen.hh.

Referenced by getNextPacket(), and HybridGen().

◆ nbrOfBanksNvm

const unsigned int gem5::HybridGen::nbrOfBanksNvm

protected

Number of banks in NVM.

Definition at line 204 of file hybrid_gen.hh.

Referenced by getNextPacket(), and HybridGen().

◆ nbrOfBanksUtil

unsigned int gem5::HybridGen::nbrOfBanksUtil

protected

Number of banks to be utilized for a given configuration.

Definition at line 268 of file hybrid_gen.hh.

Referenced by getNextPacket().

◆ nbrOfBanksUtilDram

const unsigned int gem5::HybridGen::nbrOfBanksUtilDram

protected

Number of banks to be utilized for a given configuration.

Definition at line 189 of file hybrid_gen.hh.

Referenced by getNextPacket(), and HybridGen().

◆ nbrOfBanksUtilNvm

const unsigned int gem5::HybridGen::nbrOfBanksUtilNvm

protected

Number of banks to be utilized for a given configuration.

Definition at line 207 of file hybrid_gen.hh.

Referenced by getNextPacket(), and HybridGen().

◆ nbrOfRanks

unsigned int gem5::HybridGen::nbrOfRanks

protected

Number of ranks to be utilized for a given configuration.

Definition at line 271 of file hybrid_gen.hh.

Referenced by getNextPacket().

◆ nbrOfRanksDram

const unsigned int gem5::HybridGen::nbrOfRanksDram

protected

Number of ranks to be utilized for a given configuration.

Definition at line 213 of file hybrid_gen.hh.

Referenced by getNextPacket().

◆ nbrOfRanksNvm

const unsigned int gem5::HybridGen::nbrOfRanksNvm

protected

Number of ranks to be utilized for a given configuration.

Definition at line 219 of file hybrid_gen.hh.

Referenced by getNextPacket().

◆ numSeqPkts

unsigned int gem5::HybridGen::numSeqPkts

protected

Number of sequential DRAM packets to be generated per cpu request.

Definition at line 241 of file hybrid_gen.hh.

Referenced by genStartAddr(), and getNextPacket().

◆ numSeqPktsDram

const unsigned int gem5::HybridGen::numSeqPktsDram

protected

Number of sequential packets to be generated per cpu request.

Definition at line 164 of file hybrid_gen.hh.

Referenced by getNextPacket().

◆ numSeqPktsNvm

const unsigned int gem5::HybridGen::numSeqPktsNvm

protected

Definition at line 165 of file hybrid_gen.hh.

Referenced by getNextPacket().

◆ nvmPercent

const uint8_t gem5::HybridGen::nvmPercent

protected

Percent of generated transactions that should go to NVM.

Definition at line 225 of file hybrid_gen.hh.

Referenced by getNextPacket().

◆ pageBits

unsigned int gem5::HybridGen::pageBits

protected

Number of page bits in DRAM address.

Definition at line 256 of file hybrid_gen.hh.

Referenced by genStartAddr(), and getNextPacket().

◆ pageBitsDram

const unsigned int gem5::HybridGen::pageBitsDram

protected

Number of page bits in DRAM address.

Definition at line 177 of file hybrid_gen.hh.

Referenced by getNextPacket().

◆ pageBitsNvm

const unsigned int gem5::HybridGen::pageBitsNvm

protected

Number of buffer bits in NVM address.

Definition at line 195 of file hybrid_gen.hh.

Referenced by getNextPacket().

◆ pageSize

unsigned int gem5::HybridGen::pageSize

protected

Page size of DRAM.

Definition at line 253 of file hybrid_gen.hh.

Referenced by genStartAddr(), and getNextPacket().

◆ pageSizeDram

const unsigned int gem5::HybridGen::pageSizeDram

protected

Page size of DRAM.

Definition at line 174 of file hybrid_gen.hh.

Referenced by getNextPacket().

◆ rankBits

unsigned int gem5::HybridGen::rankBits

protected

Number of rank bits in DRAM address.

Definition at line 274 of file hybrid_gen.hh.

Referenced by genStartAddr(), and getNextPacket().

◆ rankBitsDram

const unsigned int gem5::HybridGen::rankBitsDram

protected

Number of rank bits in DRAM address.

Definition at line 216 of file hybrid_gen.hh.

Referenced by getNextPacket().

◆ rankBitsNvm

const unsigned int gem5::HybridGen::rankBitsNvm

protected

Number of rank bits in DRAM address.

Definition at line 222 of file hybrid_gen.hh.

Referenced by getNextPacket().

◆ readPercent

const uint8_t gem5::HybridGen::readPercent

protected

Percent of generated transactions that should be reads.

Definition at line 158 of file hybrid_gen.hh.

Referenced by getNextPacket(), and HybridGen().

◆ startAddr

Addr gem5::HybridGen::startAddr

protected

Start of address range.

Definition at line 244 of file hybrid_gen.hh.

Referenced by genStartAddr(), and getNextPacket().

◆ startAddrDram

const Addr gem5::HybridGen::startAddrDram

protected

Start of DRAM address range.

Definition at line 133 of file hybrid_gen.hh.

Referenced by getNextPacket().

◆ startAddrNvm

const Addr gem5::HybridGen::startAddrNvm

protected

Start of DRAM address range.

Definition at line 142 of file hybrid_gen.hh.

Referenced by getNextPacket().

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

cpu/testers/traffic_gen/hybrid_gen.hh
cpu/testers/traffic_gen/hybrid_gen.cc

Public Member Functions

Protected Attributes

Additional Inherited Members

Detailed Description

Constructor & Destructor Documentation

◆ HybridGen()

Member Function Documentation

◆ enter()

◆ genStartAddr()

◆ getNextPacket()

◆ nextPacketTick()

Member Data Documentation

◆ addr

◆ addrMapping

◆ bankBits

◆ bankBitsDram

◆ bankBitsNvm

◆ blockBits

◆ blockBitsDram

◆ blockBitsNvm

◆ blocksize

◆ blocksizeDram

◆ blocksizeNvm

◆ bufferSizeNvm

◆ cacheLineSize

◆ countNumSeqPkts

◆ dataLimit

◆ dataManipulated

◆ endAddr

◆ endAddrDram

◆ endAddrNvm

◆ isNvm

◆ isRead

◆ maxPeriod

◆ minPeriod

◆ nbrOfBanks

◆ nbrOfBanksDram

◆ nbrOfBanksNvm

◆ nbrOfBanksUtil

◆ nbrOfBanksUtilDram

◆ nbrOfBanksUtilNvm

◆ nbrOfRanks

◆ nbrOfRanksDram

◆ nbrOfRanksNvm

◆ numSeqPkts

◆ numSeqPktsDram

◆ numSeqPktsNvm

◆ nvmPercent

◆ pageBits

◆ pageBitsDram

◆ pageBitsNvm

◆ pageSize

◆ pageSizeDram

◆ rankBits

◆ rankBitsDram

◆ rankBitsNvm

◆ readPercent

◆ startAddr

◆ startAddrDram

◆ startAddrNvm