1b2c81b9d7
SConscript:
Add GHB prefetcher to build list
python/m5/objects/BaseCache.mpy:
Add parameters about when to remove prefetches and wether or not to use cpuid to differentiate access patterns
--HG--
extra : convert_revision : 1d3fef21910f2f34b8c28d01b5f6e86eef53357c
60 lines
2.8 KiB
Text
60 lines
2.8 KiB
Text
from BaseMem import BaseMem
|
|
|
|
class Prefetch(Enum): vals = ['none', 'tagged', 'stride', 'ghb']
|
|
|
|
simobj BaseCache(BaseMem):
|
|
type = 'BaseCache'
|
|
adaptive_compression = Param.Bool(False,
|
|
"Use an adaptive compression scheme")
|
|
assoc = Param.Int("associativity")
|
|
block_size = Param.Int("block size in bytes")
|
|
compressed_bus = Param.Bool(False,
|
|
"This cache connects to a compressed memory")
|
|
compression_latency = Param.Int(0,
|
|
"Latency in cycles of compression algorithm")
|
|
do_copy = Param.Bool(False, "perform fast copies in the cache")
|
|
hash_delay = Param.Int(1, "time in cycles of hash access")
|
|
in_bus = Param.Bus(NULL, "incoming bus object")
|
|
lifo = Param.Bool(False,
|
|
"whether this NIC partition should use LIFO repl. policy")
|
|
max_miss_count = Param.Counter(0,
|
|
"number of misses to handle before calling exit")
|
|
mshrs = Param.Int("number of MSHRs (max outstanding requests)")
|
|
out_bus = Param.Bus("outgoing bus object")
|
|
prioritizeRequests = Param.Bool(False,
|
|
"always service demand misses first")
|
|
protocol = Param.CoherenceProtocol(NULL, "coherence protocol to use")
|
|
repl = Param.Repl(NULL, "replacement policy")
|
|
size = Param.MemorySize("capacity in bytes")
|
|
split = Param.Bool(False, "whether or not this cache is split")
|
|
split_size = Param.Int(0,
|
|
"How many ways of the cache belong to CPU/LRU partition")
|
|
store_compressed = Param.Bool(False,
|
|
"Store compressed data in the cache")
|
|
subblock_size = Param.Int(0,
|
|
"Size of subblock in IIC used for compression")
|
|
tgts_per_mshr = Param.Int("max number of accesses per MSHR")
|
|
trace_addr = Param.Addr(0, "address to trace")
|
|
two_queue = Param.Bool(False,
|
|
"whether the lifo should have two queue replacement")
|
|
write_buffers = Param.Int(8, "number of write buffers")
|
|
prefetch_miss = Param.Bool(False,
|
|
"wheter you are using the hardware prefetcher from Miss stream")
|
|
prefetch_access = Param.Bool(False,
|
|
"wheter you are using the hardware prefetcher from Access stream")
|
|
prefetcher_size = Param.Int(100,
|
|
"Number of entries in the harware prefetch queue")
|
|
prefetch_past_page = Param.Bool(False,
|
|
"Allow prefetches to cross virtual page boundaries")
|
|
prefetch_serial_squash = Param.Bool(False,
|
|
"Squash prefetches with a later time on a subsequent miss")
|
|
prefetch_degree = Param.Int(1,
|
|
"Degree of the prefetch depth")
|
|
prefetch_latency = Param.Tick(10,
|
|
"Latency of the prefetcher")
|
|
prefetch_policy = Param.Prefetch('none',
|
|
"Type of prefetcher to use")
|
|
prefetch_cache_check_push = Param.Bool(True,
|
|
"Check if in cash on push or pop of prefetch queue")
|
|
prefetch_use_cpu_id = Param.Bool(True,
|
|
"Use the CPU ID to seperate calculations of prefetches")
|