Jason,
I tried running "sample.py" but got an error:
command line: build/X86/gem5.opt configs/example/sample.py 100 1
Traceback (most recent call last):
File "<string>", line 1, in <module>
File "/home/asa78/simulators/nvmain-gem5/gem5/src/python/m5/main.py", line
388, in main
exec filecode in scope
File "configs/example/sample.py", line 51, in <module>
from system import MySystem
File "configs/example/system/__init__.py", line 30, in <module>
from system import MySystem
File "configs/example/system/system.py", line 34, in <module>
from caches import *
File "configs/example/system/caches.py", line 47, in <module>
class PrefetchCache(Cache):
TypeError: Error when calling the metaclass bases
module.__init__() takes at most 2 arguments (3 given)
I also get a similar error when running "runkvm.py":
command line: build/X86/gem5.opt configs/example/runkvm.py
Traceback (most recent call last):
File "<string>", line 1, in <module>
File "/home/asa78/simulators/nvmain-gem5/gem5/src/python/m5/main.py", line
388, in main
exec filecode in scope
File "configs/example/runkvm.py", line 51, in <module>
from system import MySystem
File "configs/example/system/__init__.py", line 30, in <module>
from system import MySystem
File "configs/example/system/system.py", line 34, in <module>
from caches import *
File "configs/example/system/caches.py", line 47, in <module>
class PrefetchCache(Cache):
TypeError: Error when calling the metaclass bases
module.__init__() takes at most 2 arguments (3 given)
I also appreciate if you can help me answer the following questions:
1. Is "sample.py" compatible with non-kvm gem5 images? If not, then would
you please let me know how I can change it to be so. I have to admit that I
have no experience with kvm at all.
2. Can "sample.py" process the same set of arguments as the standard fs.py?
I need to simulate 4 CPUs, 2-levels of cache, ... etc. Can I pass these
arguments to "sample.py" the same way I do with fs.py?
Thank you,
Ali.
________________________________
From: gem5-users <[email protected]> on behalf of Jason Lowe-Power
<[email protected]>
Sent: Saturday, February 4, 2017 4:20 PM
To: gem5 users mailing list
Subject: Re: [gem5-users] Number of instructions Vs number of ticks +
resetstats + checkpointing
Hi Ali,
Since you're doing something that isn't fully supported by the fs.py script, I
would suggest making your own config file. The fs.py script, and the other
supporting scripts in common/, are not very flexible, and when you want to do
something that is a little outside of the norm it becomes very hard to make
changes to those scripts.
To answer your question about the number of instructions, the CPU objects have
a function exposed to python which returns the number of instructions the CPU
has executed. Therefore, you can use this to figure out the number of
instructions from Python. Also, each CPU can cause the simulation to exit after
it has executed some number of instructions. In fact, I have some scripts that
do exactly this on my github page
(https://github.com/powerjg/gem5/tree/devel/simplefs/configs/myconfigs<https://na01.safelinks.protection.outlook.com/?url=https%3A%2F%2Fgithub.com%2Fpowerjg%2Fgem5%2Ftree%2Fdevel%2Fsimplefs%2Fconfigs%2Fmyconfigs&data=01%7C01%7Casa78%40pitt.edu%7Cc4cd0dc13636431acc9808d44d43b84f%7C9ef9f489e0a04eeb87cc3a526112fd0d%7C1&sdata=g5gvXG3nLiVPYnJy5pLMSXMiM%2FXE%2F1iBzWPGdAMFITM%3D&reserved=0>).
My scripts fast-forward with KVM instead of restoring from a checkpoint, but
the skeletons for the code are similar either way.
Let me know if you have more questions.
Jason
On Thu, Feb 2, 2017 at 5:41 AM Alsuwaiyan, Ali Saleh
<[email protected]<mailto:[email protected]>> wrote:
Hi everyone,
I'm relatively new to gem5 and came across a problem where I need to perform
the following:
1. reset the stats and checkpoint, both after 10M instructions
2. restore the checkpoint with detailed CPU type and run for 1B instructions
then stop
The problem is that both resetstats and checkpoint commands take the number of
ticks as input, while what I need is the number of instructions.
I know that this question has been asked previously (e.g.,
https://www.mail-archive.com/[email protected]/msg00489.html<https://na01.safelinks.protection.outlook.com/?url=https%3A%2F%2Fwww.mail-archive.com%2Fgem5-users%40gem5.org%2Fmsg00489.html&data=01%7C01%7Casa78%40pitt.edu%7Cc4cd0dc13636431acc9808d44d43b84f%7C9ef9f489e0a04eeb87cc3a526112fd0d%7C1&sdata=M76CjAO2TYRkS8Uvdj%2F9yzQzE9%2FHNj%2BELNsR0XxjcPE%3D&reserved=0>,
a 2011 thread), however, no accurate answer has been provided.
Currently, I'm using ticks instead of instructions in step 1 above; however,
the number of instructions is different from one workload to another, when
keeping the number of ticks constant. Here is my command line for step 1:
build/X86/gem5.opt configs/example/fs.py --caches
--disk-image=linux-x86-large.img --kernel=x86_64-vmlinux-3.2.24.smp
--l1d_size=128kB --l1i_size=128kB --l2cache --l2_size=8MB --l2_assoc=8
--cacheline_size=64 -n 4 --script=configs/boot/myworkloads/wd1.rcS -r 1
--rel-max-tick=250000000000
Here, checkpoint 1 is taken by the standard boot script "hack_back_ckpt.rcS",
which hands over control to wd1.rcS script after restoring. Also, the
rel-max-tick is set to stop the execution after the checkpoint is created. The
content of wd1.rcS is as follows:
#!/bin/sh
echo "delayed checkpoint..."
/sbin/m5 checkpoint 200000000
echo "delayed resetstat..."
/sbin/m5 resetstats 200000000
cd /myapps/spec/benchspec/CPU2006/437.leslie3d/data/ref/input
echo "Starting leslie3d..."
taskset 0x1
/myapps/spec/benchspec/CPU2006/437.leslie3d/exe/leslie3d_base.gcc43-64bit <
leslie3d.in<https://na01.safelinks.protection.outlook.com/?url=http%3A%2F%2Fleslie3d.in&data=01%7C01%7Casa78%40pitt.edu%7Cc4cd0dc13636431acc9808d44d43b84f%7C9ef9f489e0a04eeb87cc3a526112fd0d%7C1&sdata=xPWh14k%2BOK7TfIdzXnc6Qyt%2BnC0YOkvdKdQxg5UqGBs%3D&reserved=0>
> leslie3d.ref.out 2> leslie3d.ref.err &
echo "Starting leslie3d..."
taskset 0x2
/myapps/spec/benchspec/CPU2006/437.leslie3d/exe/leslie3d_base.gcc43-64bit <
leslie3d.in<https://na01.safelinks.protection.outlook.com/?url=http%3A%2F%2Fleslie3d.in&data=01%7C01%7Casa78%40pitt.edu%7Cc4cd0dc13636431acc9808d44d43b84f%7C9ef9f489e0a04eeb87cc3a526112fd0d%7C1&sdata=xPWh14k%2BOK7TfIdzXnc6Qyt%2BnC0YOkvdKdQxg5UqGBs%3D&reserved=0>
> leslie3d.ref.out2 2> leslie3d.ref.err2 &
cd /myapps/spec/benchspec/CPU2006/429.mcf/data/ref/input
echo "Starting mcf..."
taskset 0x4 /myapps/spec/benchspec/CPU2006/429.mcf/exe/mcf_base.gcc43-64bit
inp.in<https://na01.safelinks.protection.outlook.com/?url=http%3A%2F%2Finp.in&data=01%7C01%7Casa78%40pitt.edu%7Cc4cd0dc13636431acc9808d44d43b84f%7C9ef9f489e0a04eeb87cc3a526112fd0d%7C1&sdata=NSrfIWOztC0EsoUanW6K6xdkqqIsDCc4nR8TiM7XAZA%3D&reserved=0>
> mcf.ref.out 2> mcf.ref.err &
echo "Starting mcf..."
taskset 0x8 /myapps/spec/benchspec/CPU2006/429.mcf/exe/mcf_base.gcc43-64bit
inp.in<https://na01.safelinks.protection.outlook.com/?url=http%3A%2F%2Finp.in&data=01%7C01%7Casa78%40pitt.edu%7Cc4cd0dc13636431acc9808d44d43b84f%7C9ef9f489e0a04eeb87cc3a526112fd0d%7C1&sdata=NSrfIWOztC0EsoUanW6K6xdkqqIsDCc4nR8TiM7XAZA%3D&reserved=0>
> mcf.ref.out2 2> mcf.ref.err2 &
echo "Waiting ..."
wait
echo "finished!"
/sbin/m5 exit
When the script exists and the second checkpoint is created, I simply carry on
to step #2 using the command below:
build/X86/gem5.opt configs/example/fs.py --caches
--disk-image=linux-x86-large.img --kernel=x86_64-vmlinux-3.2.24.smp
--l1d_size=128kB --l1i_size=128kB --l2cache --l2_size=8MB --l2_assoc=8
--cacheline_size=64 -n 4 -r 2 --cpu-type=detailed -I 1000000000
I know that the "-I" option counts the instructions from the beginning, but at
least it uses instructions as a unit, not ticks.
I'm very sure someone has done something regarding this, i.e., resetstats and
checkpoint at "instruction#" instead of at "tick#". I have seen this done by
many papers in the literature.
Your feedback is highly appreciated.
BTW, my gem5 revision number is 10791.
Thank you,
Ali.
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