Hello,
When I enable stride prefetcher on L1 dcache, and run timing mode on 4
cores configuration,
The stats.txt shows that only one core (core1) has prefetch statistics.The
number are zero on other core's prefetcher.
system.cpu1.dcache.prefetcher.prefetcher.num_hwpf_identified
10455 # number of hwpf identified
system.cpu1.dcache.prefetcher.prefetcher.num_hwpf_already_in_mshr
0 # number of hwpf that were already in mshr
system.cpu1.dcache.prefetcher.prefetcher.num_hwpf_already_in_cache
358 # number of hwpf that were already in the cache
system.cpu1.dcache.prefetcher.prefetcher.num_hwpf_already_in_prefetcher
0 # number of hwpf that were already in the prefetch
queue
system.cpu1.dcache.prefetcher.prefetcher.num_hwpf_evicted
0 # number of hwpf removed due to no
buffer left
system.cpu1.dcache.prefetcher.prefetcher.num_hwpf_removed_MSHR_hit
0 # number of hwpf removed because MSHR
allocated
system.cpu1.dcache.prefetcher.prefetcher.num_hwpf_issued
10097 # number of hwpf issued
system.cpu1.dcache.prefetcher.prefetcher.num_hwpf_span_page
154 # number of hwpf spanning a virtual page
system.cpu1.dcache.prefetcher.prefetcher.num_hwpf_squashed_from_miss
0 # number of hwpf that got squashed due to a miss
aborting calculation time
The behavior just likes only core1 enables the prefetcher.
What is the reason of the problem?
Thanks!
My command are:
First time:
./build/X86/m5.fast ./configs/example/fs.py --cpu-type=atomic
-n4 --script=/Barnes_core4
and will create a checkpoint file before ROI part.
Second time:
./build/X86/m5.fast ./configs/example/fs.py --cpu-type=timing
-n4 --caches --l2cache -r1
restore from checkpoint, and run simulation on timing mode.
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