Cache Replacement policy and Cache Banks

[Vinay]

Hi Jiayuan,

Can we change the cache replacement policy, like LRU or MRU , If yes
where can we set the parameter?
Also how can we vary the number of banks ?

I did see the parameters in ~/hgfractal/src/mem/cache/BaseCache.py :

lru = Param.Bool(True, "whether the LRU replacement policy is
used")
mru = Param.Bool(False, "whether the MRU replacement policy is
used")
lrgu = Param.Bool(False, "whether the LRGU replacement policy is
used")

numBanks = Param.Int(1, "number of banks this cache has, must be
>=1")

Can these parameters be included in either ~/configs/fractal/
fractal_smp.py or config_hetero.py ?

Thanks,
Vinay

[Vinay V.L]

I just noticed that that the number of banks can be changed separately for both DCache and L2. throught fractal_smp.py Sorry about that, I take back my question.

I am concerned about L2 Cache replacement policy. Is it possible vary it ?

Thanks,
Vinay

[Jiayuan Meng]

Yes, in frCommon.py, you can see each cache class has a "repl" attribute. Actually in the commandline, there are DcacheRepl and l2Repl, with which you can specify the replacement policy. 

Jiayuan