I can see L2, L3 stats in stats.txt but how can I make sure that the LINUX has the correct cache sizes that I am passing in gem5 command line please? Is there a way to verify that? Because Linux bootup terminal output only shows the following incorrect configuration: "Mount-cache hash table entries: 256 CPU: L1 I Cache: 64K (64 bytes/line), D cache 64K (64 bytes/line) CPU: L2 Cache: 1024K (64 bytes/line)"
Thanks. Ahmad On 14 January 2014 09:14, Ahmad Hassan <[email protected]> wrote: > Hi All, > > Please can you tell me how to verify that the Linux has been booted with > the actual cache configuration passed in gem5? I have run GEM3 with L1, L2 > and L3 having following sizes. I added L3 bus myself. > > ./build/X86/gem5.opt configs/example/fs.py > --kernel=x86_64-vmlinux-2.6.22.9.smp --cpu-type=detailed --caches > --num-l2caches=1 --num-l3caches=1 --l1d_size=32kB --l1d_assoc=8 > --l1i_size=32kB --l1i_assoc=8 --l2cache --l2_size=256kB --l2_assoc=8 > --l3_assoc=16 --l3_size=8192kB --cacheline_size=64 --l3cache > > But when Ubuntu (Lucid) boots up then I don't see any cache configuration > through 'lscpu' > > $lscpu > Architecture: x86_64 > CPU op-mode(s): 32-bit, 64-bit > CPU(s): 1 > Thread(s) per core: 1 > Core(s) per socket: 1 > CPU socket(s): 1 > Vendor ID: M5 Simulator > CPU family: 15 > Model: 37 > Stepping: 1 > CPU MHz: 2000.010 > > Moreover, 'ls /sys/devices/system/cpu/cpu0' only shows 'topology' dir and > no cache directory. > > Also during the system bootup, the Linux shows wrong cache configuration > for both L1 and L2: > : > "Mount-cache hash table entries: 256 > CPU: L1 I Cache: 64K (64 bytes/line), D cache 64K (64 bytes/line) > CPU: L2 Cache: 1024K (64 bytes/line)" > > Thanks. > >
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