Hello I am using CHI and I want to model the scenario where the CPUs are in a cluster and each cluster CPU has private L1 and L2 caches.
I have modified CHI.py and CHI_config.py. In CHI_config.py, I have taken a copy of CHI_RNF() class object and renamed the copied version CHI_RNF_CLUST_PRIV_L2(). Within this new class object I have modified the code to realise a private L2cache for each CPU in the cluster. I have tried to test with the generation of one cluster (ruby_system.littleCluster) with four CPUs. I am attaching the WinZip rar file which includes the modified versions of CHI.py, CHI_config.py. Also included is the log file from generating one cluster and zero cluster. Have added print statements for debugging. In particular, for the modified CHI.py, added print statement between lines 574-576, I get the following output: CHI.py -- Cntrl is <orphan System>.cpu0.l1i CHI.py -- Cntrl is <orphan System>.cpu0.l1d CHI.py -- Cntrl is <orphan System>.cpu1.l1i CHI.py -- Cntrl is <orphan System>.cpu1.l1d CHI.py -- Cntrl is <orphan System>.cpu2.l1i CHI.py -- Cntrl is <orphan System>.cpu2.l1d CHI.py -- Cntrl is <orphan System>.cpu3.l1i CHI.py -- Cntrl is <orphan System>.cpu3.l1d CHI.py -- Cntrl is <orphan System>.cpu0.l2 CHI.py -- Cntrl is <orphan System>.cpu1.l2 CHI.py -- Cntrl is <orphan System>.cpu2.l2 CHI.py -- Cntrl is <orphan System>.cpu3.l2 When I look at the above debug output, it is not clear whether four private L2$'s have been generated or just one L2$ which is shared between all four CPUs. I am comparing the above with the output when zero clusters are specified (log file for zero clusters is also attached). Could someone with more expertise in CHI implementation in GEM5 than myself, please let me know if the generated L2$'s for one cluster are private or shared> Thanks in advance. JO
chi_one_cluster.rar
Description: chi_one_cluster.rar
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