Hello,
I am writing about a ruby databank latency problem.
I am trying to simulate caches with longer data bank access latency. It
seems that the ruby data/tag bank (BankArray model) is perfect for this
job. But no matter how I change the dataAccessLatency under ruby
L1Cache, the output stats do not show any difference. And I turned on
the debug-flag RubyResourceStalls, nothing is printed either.
I can actually see that the l1_cntrl0.L1Dcache in the config.ini has the
configured dataAccessLatency (I set that to 10000 to try to make a
difference) and resourceStalls is set to be True. Besides, I did not
find where the CacheMemory::checkResourceAvailable function is called.
This function should trigger the banked model, is it right?
I am using [ ALPHA_MESI_CMP_directory, gem5-dev, Ruby, FS ] to run test
simulation with splash FFT.
I have changed the configs/ruby/MESI_CMP_directory.py as below:
#
# Note: the L1 Cache latency is only used by the sequencer on fast path hits
#
class L1Cache(RubyCache):
dataAccessLatency = 10000
resourceStalls = True
latency = 3
Could anyone please give me some suggestion on what I did wrong? Any
idea would be really appreciated.
Thanks,
Cong Ma
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