First you might want to talk to Rick Strong about this a little bit,
since he has been doing the same thing and he might have added
parameters that take an instruction count to checkpoint on (also you
should make sure that you've patched your tree with the various
patches that have been posted to the list over the last two months as
they fix some bugs you might run into).
The times specified on the command line for m5 are normally (by
default) specified in ticks where one tick in 1ps and therefore is not
related to the frequency of the simulated cpu at all. Simulating for
3e17 ticks is equivalent to simulating 3.5 days of execution which I
believe could take a very long time.
3e11 will get you 300 million CPU cycles which isn't necessarily 300
million instructions, but look for Rick's thread for a solution to that.
Ali
On Jan 26, 2008, at 11:31 AM, dean michael ancajas wrote:
hi everybody,
this is my first time to fast forward instructions using
AtomicSimpleCPU. I want to fast forward to 300M instructions (for
gzip graphic-ref) so I fast forward to (1Ghz * 300M= 3x10^17 ticks),
its now been simulating for 29hrs now and I decided to attach
'm5term' and it says "113180285494000: system_remote.gdb: remote gdb
attached". My question is, is that number the tick number? If it is
and assuming constant ticks/second execution of the simulator, if I
divide (3X10^17)/1131180285494000=265. Does this mean the whole
simulation will take 265*29hrs?
this is the command that i invoked:
[EMAIL PROTECTED] ./build/ALPHA_SE/m5.opt --stats-file=statsdir/
gzip_graphic_stats.txt configs/example/se.py --cmd=/home/m5user/m5/
spec2000/binaries/alpha/tru64/gzip --input=
/home/m5user/m5/spec2000/data/gzip/ref/input/input.graphic --
max_checkpoints=1 --take_checkpoints=300000000000000000,10000 --
checkpoint_dir=cpt_gzip_gra
btw,
i adjusted my clockrate in se.py to be 1Ghz.
thanks in advance,
-dean
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