On Tue, Jan 14, 2014 at 2:27 AM, Ahmad Hassan <[email protected]>wrote:
> 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. >> >> > > _______________________________________________ > gem5-users mailing list > [email protected] > http://m5sim.org/cgi-bin/mailman/listinfo/gem5-users >
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