Hello everyone:
I need to implement an architecture similar to Intel i7 (private L1 and L2 and
a shared L3). I am using the classic memory model. I changed the files
Caches.py, CacheConfig.py and Options, I followed the instructions showed in
the forum. My I idea is to have the possibility of use the system I want or the
actual system (private L1 and shared L2), and control the system to use from
the command line.
The actual system works great, but I have a problem with the system with L3, I
got this error message:
:$ build/X86/gem5.opt configs/example/se.py --caches --l1d_size=32kB
--l1i_size=32kB --l2_size=256kB --l3cache --l3_size=1MB -c
tests/test-progs/hello/bin/x86/linux/hellogem5 Simulator System.
http://gem5.orggem5 is copyrighted software; use the --copyright option for
details.gem5 compiled Jan 24 2013 01:15:35gem5 started Jan 24 2013 02:20:38gem5
executing on mulhacencommand line: build/X86/gem5.opt configs/example/se.py
--caches --l1d_size=32kB --l1i_size=32kB --l2_size=256kB --l3cache
--l3_size=1MB -c tests/test-progs/hello/bin/x86/linux/hellowarning:
add_child('l2cache'): child 'l2' already has parentGlobal frequency set at
1000000000000 ticks per second0: system.remote_gdb.listener: listening for
remote gdb #0 on port 7000gem5.opt: build/X86/base/statistics.hh:983: void
Stats::VectorBase<Derived, Stor>::doInit(Stats::size_type) [with Derived =
Stats::Vector, Stor = Stats::StatStor, Stats::size_type = unsigned int]:
Assertion `!storage && "already initialized"' failed.Program aborted at cycle
0Aborted (core dumped)
I checked the config.ini (using the config.dot.pdf) and all the connections
seem to be ok. I am forgetting something? I copy below the contents of the
modified files and config.ini.
Thanks in advance, Rodrigo
Options.py: I add this new option
parser.add_option("--l3cache", action="store_true")
Caches.py: I add the L3 cacheclass L3Cache(BaseCache): assoc = 8
block_size = 64 latency = '30ns' mshrs = 20 tgts_per_mshr = 12
CacheConfig.py: The main changes were done here
import m5from m5.objects import *from Caches import *from O3_ARM_v7a import *
def config_cache(options, system):
if options.l3cache: if options.cpu_type == "arm_detailed":
system.l3 = O3_ARM_v7aL3(size = options.l3_size, assoc = options.l3_assoc,
block_size=options.cacheline_size) else:
system.l3 = L3Cache(size = options.l3_size, assoc = options.l3_assoc,
block_size=options.cacheline_size)
system.tol3bus = CoherentBus() system.l3.cpu_side =
system.tol3bus.master system.l3.mem_side = system.membus.slave
else: if options.l2cache: if options.cpu_type ==
"arm_detailed": system.l2 = O3_ARM_v7aL2(size =
options.l2_size, assoc = options.l2_assoc,
block_size=options.cacheline_size) else:
system.l2 = L2Cache(size = options.l2_size, assoc = options.l2_assoc,
block_size=options.cacheline_size)
system.tol2bus = CoherentBus() system.l2.cpu_side =
system.tol2bus.master system.l2.mem_side = system.membus.slave
for i in xrange(options.num_cpus): if options.caches: if
options.cpu_type == "arm_detailed": icache =
O3_ARM_v7a_ICache(size = options.l1i_size,
assoc = options.l1i_assoc,
block_size=options.cacheline_size) dcache =
O3_ARM_v7a_DCache(size = options.l1d_size,
assoc = options.l1d_assoc,
block_size=options.cacheline_size) else: icache =
L1Cache(size = options.l1i_size, assoc =
options.l1i_assoc,
block_size=options.cacheline_size) dcache = L1Cache(size =
options.l1d_size, assoc = options.l1d_assoc,
block_size=options.cacheline_size)
if options.l3cache: if options.cpu_type ==
"arm_detailed": system.cpu[i].l2 = O3_ARM_v7aL2(size =
options.l2_size, assoc = options.l2_assoc,
block_size=options.cacheline_size) else:
system.cpu[i].l2 = L2Cache(size =
options.l2_size, assoc = options.l2_assoc,
block_size=options.cacheline_size)
if buildEnv['TARGET_ISA'] == 'x86': if
options.l3cache:
system.cpu[i].addTwoLevelCacheHierarchy(icache, dcache, system.cpu[i].l2,
PageTableWalkerCache(),
PageTableWalkerCache())
else: system.cpu[i].addPrivateSplitL1Caches(icache,
dcache,
PageTableWalkerCache(),
PageTableWalkerCache()) else: if options.l3cache:
system.cpu[i].addTwoLevelCacheHierarchy(icache, dcache,
system.cpu[i].l2) else:
system.cpu[i].addPrivateSplitL1Caches(icache, dcache)
system.cpu[i].createInterruptController() if options.l3cache:
system.cpu[i].connectAllPorts(system.tol3bus, system.membus) else:
if options.l2cache:
system.cpu[i].connectAllPorts(system.tol2bus, system.membus)
else: system.cpu[i].connectAllPorts(system.membus)
return system
config.ini
[root]type=Rootchildren=systemfull_system=falsetime_sync_enable=falsetime_sync_period=100000000000time_sync_spin_threshold=100000000
[system]type=Systemchildren=cpu l3 membus physmem
tol3busboot_osflags=ainit_param=0kernel=load_addr_mask=1099511627775mem_mode=atomicmemories=system.physmemnum_work_ids=16readfile=symbolfile=work_begin_ckpt_count=0work_begin_cpu_id_exit=-1work_begin_exit_count=0work_cpus_ckpt_count=0work_end_ckpt_count=0work_end_exit_count=0work_item_id=-1system_port=system.membus.slave[0]
[system.cpu]type=AtomicSimpleCPUchildren=dcache dtb dtb_walker_cache icache
interrupts itb itb_walker_cache l2cache l2cache toL2Bus tracer
workloadchecker=Nullclock=500cpu_id=0defer_registration=falsedo_checkpoint_insts=truedo_quiesce=truedo_statistics_insts=truedtb=system.cpu.dtbfastmem=falsefunction_trace=falsefunction_trace_start=0interrupts=system.cpu.interruptsitb=system.cpu.itbmax_insts_all_threads=0max_insts_any_thread=0max_loads_all_threads=0max_loads_any_thread=0numThreads=1phase=0profile=0progress_interval=0simulate_data_stalls=falsesimulate_inst_stalls=falsesystem=systemtracer=system.cpu.tracerwidth=1workload=system.cpu.workloaddcache_port=system.cpu.dcache.cpu_sideicache_port=system.cpu.icache.cpu_side
[system.cpu.dcache]type=BaseCacheaddr_ranges=0:18446744073709551615assoc=8block_size=64clp_nChance=1forward_snoops=truehash_delay=1is_top_level=truelatency=1000max_miss_count=0mshrs=10prefetch_on_access=falseprefetcher=NullprioritizeRequests=falserepl=Nullrepl_Policy=LRUsize=32768subblock_size=0system=systemtgts_per_mshr=20trace_addr=0two_queue=falsewrite_buffers=8cpu_side=system.cpu.dcache_portmem_side=system.cpu.toL2Bus.slave[1]
[system.cpu.dtb]type=X86TLBchildren=walkersize=64walker=system.cpu.dtb.walker
[system.cpu.dtb.walker]type=X86PagetableWalkersystem=systemport=system.cpu.dtb_walker_cache.cpu_side
[system.cpu.dtb_walker_cache]type=BaseCacheaddr_ranges=0:18446744073709551615assoc=2block_size=64clp_nChance=1forward_snoops=truehash_delay=1is_top_level=truelatency=1000max_miss_count=0mshrs=10prefetch_on_access=falseprefetcher=NullprioritizeRequests=falserepl=Nullrepl_Policy=LRUsize=1024subblock_size=0system=systemtgts_per_mshr=12trace_addr=0two_queue=falsewrite_buffers=8cpu_side=system.cpu.dtb.walker.portmem_side=system.cpu.toL2Bus.slave[3]
[system.cpu.icache]type=BaseCacheaddr_ranges=0:18446744073709551615assoc=8block_size=64clp_nChance=1forward_snoops=truehash_delay=1is_top_level=truelatency=1000max_miss_count=0mshrs=10prefetch_on_access=falseprefetcher=NullprioritizeRequests=falserepl=Nullrepl_Policy=LRUsize=32768subblock_size=0system=systemtgts_per_mshr=20trace_addr=0two_queue=falsewrite_buffers=8cpu_side=system.cpu.icache_portmem_side=system.cpu.toL2Bus.slave[0]
[system.cpu.interrupts]type=X86LocalApicint_latency=1000pio_addr=2305843009213693952pio_latency=1000system=systemint_master=system.membus.slave[2]int_slave=system.membus.master[2]pio=system.membus.master[1]
[system.cpu.itb]type=X86TLBchildren=walkersize=64walker=system.cpu.itb.walker
[system.cpu.itb.walker]type=X86PagetableWalkersystem=systemport=system.cpu.itb_walker_cache.cpu_side
[system.cpu.itb_walker_cache]type=BaseCacheaddr_ranges=0:18446744073709551615assoc=2block_size=64clp_nChance=1forward_snoops=truehash_delay=1is_top_level=truelatency=1000max_miss_count=0mshrs=10prefetch_on_access=falseprefetcher=NullprioritizeRequests=falserepl=Nullrepl_Policy=LRUsize=1024subblock_size=0system=systemtgts_per_mshr=12trace_addr=0two_queue=falsewrite_buffers=8cpu_side=system.cpu.itb.walker.portmem_side=system.cpu.toL2Bus.slave[2]
[system.cpu.l2cache]type=BaseCacheaddr_ranges=0:18446744073709551615assoc=8block_size=64clp_nChance=0forward_snoops=truehash_delay=1is_top_level=falselatency=10000max_miss_count=0mshrs=20prefetch_on_access=falseprefetcher=NullprioritizeRequests=falserepl=Nullrepl_Policy=LRU2size=262144subblock_size=0system=systemtgts_per_mshr=12trace_addr=0two_queue=falsewrite_buffers=8cpu_side=system.cpu.toL2Bus.master[0]mem_side=system.tol3bus.slave[0]
[system.cpu.l2cache]type=BaseCacheaddr_ranges=0:18446744073709551615assoc=8block_size=64clp_nChance=0forward_snoops=truehash_delay=1is_top_level=falselatency=10000max_miss_count=0mshrs=20prefetch_on_access=falseprefetcher=NullprioritizeRequests=falserepl=Nullrepl_Policy=LRU2size=262144subblock_size=0system=systemtgts_per_mshr=12trace_addr=0two_queue=falsewrite_buffers=8cpu_side=system.cpu.toL2Bus.master[0]mem_side=system.tol3bus.slave[0]
[system.cpu.toL2Bus]type=CoherentBusblock_size=64clock=1000header_cycles=1use_default_range=falsewidth=64master=system.cpu.l2cache.cpu_sideslave=system.cpu.icache.mem_side
system.cpu.dcache.mem_side system.cpu.itb_walker_cache.mem_side
system.cpu.dtb_walker_cache.mem_side
[system.cpu.tracer]type=ExeTracer
[system.cpu.workload]type=LiveProcesscmd=tests/test-progs/hello/bin/x86/linux/hellocwd=egid=100env=errout=cerreuid=100executable=tests/test-progs/hello/bin/x86/linux/hellogid=100input=cinmax_stack_size=67108864output=coutpid=100ppid=99simpoint=0system=systemuid=100
[system.l3]type=BaseCacheaddr_ranges=0:18446744073709551615assoc=16block_size=64clp_nChance=0forward_snoops=truehash_delay=1is_top_level=falselatency=30000max_miss_count=0mshrs=20prefetch_on_access=falseprefetcher=NullprioritizeRequests=falserepl=Nullrepl_Policy=PELIFOsize=1048576subblock_size=0system=systemtgts_per_mshr=12trace_addr=0two_queue=falsewrite_buffers=8cpu_side=system.tol3bus.master[0]mem_side=system.membus.slave[1]
[system.membus]type=CoherentBusblock_size=64clock=1000header_cycles=1use_default_range=falsewidth=64master=system.physmem.port[0]
system.cpu.interrupts.pio
system.cpu.interrupts.int_slaveslave=system.system_port system.l3.mem_side
system.cpu.interrupts.int_master
[system.physmem]type=SimpleMemoryconf_table_reported=falsefile=in_addr_map=truelatency=30000latency_var=0latency_wr=600000null=falserange=0:536870911zero=falseport=system.membus.master[0]
[system.tol3bus]type=CoherentBusblock_size=64clock=1000header_cycles=1use_default_range=falsewidth=64master=system.l3.cpu_sideslave=system.cpu.l2cache.mem_side
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