Hi Kevin,
Thanks again for the response. I think I am following your instructions
to a tee, however I still seem to be running into an error
(specifically, it seems as though there is an ambiguity in the python
with respect to the parent of the CPU). My configuration is for the
full system mode, so it is a bit more complicated than the example in
the FAQ, but it essentially works as follows:
run_cpu = AtomicSimpleCPU()
switch_cpu = TimingSimpleCPU(defer_registration=True)
mem_mode = 'timing'
run_cpu.clock = '2GHz'
switch_cpu.clock = '2GHz'
switch_cpu_list = [(run_cpu,switch_cpu)]
root = Root(clock = '1THz',
system = makeLinuxAlphaSystem(mem_mode, bm[0]))
root.system.cpu = run_cpu
root.system.switch_cpu = switch_cpu
# I am a bit unsure about the next four lines, however the error is the
# same with or without them
run_cpu.connectMemPorts(root.system.membus)
run_cpu.mem = root.system.physmem
switch_cpu.connectMemPorts(root.system.membus)
switch_cpu.mem = root.system.physmem
m5.instantiate (root)
m5.simulate(20000)
m5.switchCpus(switch_cpu_list)
exit_event = m5.simulate(maxtick)
This causes the following error:
Error in unproxying param 'cpu' of system.intrctrl
Traceback (most recent call last):
File "<string>", line 1, in ?
File "build/ALPHA_FS/python/m5/main.py", line 314, in main
execfile(sys.argv[0], scope)
File "configs/example/fsSwap.py", line 65, in ?
m5.instantiate(root)
File "build/ALPHA_FS/python/m5/__init__.py", line 87, in instantiate
root.print_ini()
File "build/ALPHA_FS/python/m5/config.py", line 517, in print_ini
self._children[child].print_ini()
File "build/ALPHA_FS/python/m5/config.py", line 517, in print_ini
self._children[child].print_ini()
File "build/ALPHA_FS/python/m5/config.py", line 505, in print_ini
value = value.unproxy(self)
File "build/ALPHA_FS/python/m5/config.py", line 665, in unproxy
result, done = self.find(obj)
File "build/ALPHA_FS/python/m5/config.py", line 748, in find
return obj.find_any(self._pdesc.ptype)
File "build/ALPHA_FS/python/m5/config.py", line 466, in find_any
raise AttributeError, \
AttributeError: parent.any matched more than one: <bound method
TimingSimpleCPU.path of <m5.objects.SimpleCPU.TimingSimpleCPU object at
0xb78ff78c>> <bound method AtomicSimpleCPU.path of
<m5.objects.SimpleCPU.AtomicSimpleCPU object at 0xb78ff74c>>
This is the same error I have been getting (and actually why I replied
before asking for a more specific example, as I thought I was doing
something wrong in declaring the child to be instantiated). As I said
before, I know very little python, but it seems to be an ambiguity as to
the parent of a CPU method. Please let me know if you have any insight
into what I can do to resolve this issue.
Thank you once again,
James
On 9/13/06, *Kevin Lim* <[EMAIL PROTECTED] <mailto:[EMAIL PROTECTED]>> wrote:
Hi James,
Sorry for the slow response. I've had some pretty big deadlines due
recently, so I've been very busy with that.
I looked at a config I had working a while ago for sampling and I
updated the Wiki with the information from it. Basically you should
be able to assign the CPU you will switch in as a child of the
system that it will run in once it is switched in. So if you had an
instantiation of System called my_system, you should be able to do
my_system.switch_cpu = my_switch_cpu. In this case you're not
actually setting a parameter within System, but merely indicating
that it has a child object switch_cpu.
Hopefully this helps,
Kevin
------------------------------------------------------------------------
*From:* [EMAIL PROTECTED]
<mailto:[EMAIL PROTECTED]> [mailto:
[EMAIL PROTECTED] <mailto:[EMAIL PROTECTED]>] *On
Behalf Of *James Anon
*Sent:* Tuesday, September 05, 2006 4:07 PM
*To:* M5 users mailing list
*Subject:* Re: [m5-users] Using the SwitchCpu function
Hi Kevin,
Thanks for the response. I was wondering if you could expand a bit
upon exactly where to attach the child cpu list (possibly by just
providing a sample configuration file that uses the swithCpu). I've
tried attaching it at both the root level, and at the system level;
but the problem is m5 dies with the error that there is no such
parameter at that level ( e.g. "AttributeError: Class Root has no
parameter cpuList"). I've looked through the root and system
objects and can't find any parameter associated with such a list. I
also tried declaring a vector of cpus instead of just one ( e.g.
root.system.cpu = [cpu,cpu2]) to see if I could get it to
instantiate that way, but that usually ends in an error such as
"AttributeError: parent.any matched more than one:". Finally, I've
also tried creating multiple systems ( root.testdsys and
root.drivesys), but I don't think that is giving me what I desire.
I'm still pretty new to Python so I apologize if there is a simple
way to look this up and I am just overlooking it, but as of this
moment I'm at a lost for how to solve this issue.
James
On 9/3/06, *Kevin Lim* <[EMAIL PROTECTED] <mailto:[EMAIL PROTECTED]>> wrote:
I believe the problem here is that cpu and cpu2 need to be part of
the system (somewhere) in order to be instantiated by m5's
configuration parsing. The error that it's giving you means that
you didn't have those two CPUs as part of the configuration that
actually gets instantiated. Thus when it tries to switch between
the CPUs, it finds that the CPUs have no corresponding object within
the running instance of m5. Try making your switch_cpu_list as a
child of either the root object or a system object (I believe you
should just be able to do "root.switch_cpus = switch_cpu_list" or
something along those lines). I'll try to clean up the Wiki to
clarify that when I get a better example.
Kevin
------------------------------------------------------------------------
*From:* [EMAIL PROTECTED]
<mailto:[EMAIL PROTECTED]>
[mailto:[EMAIL PROTECTED]
<mailto:[EMAIL PROTECTED]>] *On Behalf Of *James Anon
*Sent:* Friday, September 01, 2006 2:35 PM
*To:* [email protected] <mailto:[email protected]>
*Subject:* [m5-users] Using the SwitchCpu function
I am trying to use the m5.switchCpus function to quickly simulate
pass the linux booting stage, and then switch to detailed mode after
the full system is booted. I followed the wiki page and have made
minor modifications to the fs.py example script including:
cpu = AtomicSimpleCPU()
cpu2 = DetailedO3CPU()
mem_mode = 'timing'
.
.
.
switch_cpu_list = [(cpu,cpu2)]
m5.simulate(3663496423522)
m5.switchCpus(switch_cpu_list)
exit_event = m5.simulate(maxtick)
Most other options I've left the same from the fs.py script, but
when I run the simulator, it works perfectly until the switch point
and then dies with:
Switching CPUs
Traceback (most recent call last):
File "<string>", line 1, in ?
File "build/ALPHA_FS/python/m5/main.py", line 314, in main
execfile(sys.argv[0], scope)
File "configs/example/fsSwap.py", line 86, in ?
m5.switchCpus(switch_cpu_list)
File "build/ALPHA_FS/python/m5/__init__.py", line 206, in switchCpus
new_cpu.takeOverFrom(old_cpus[index])
File "build/ALPHA_FS/python/m5/config.py", line 570, in takeOverFrom
self._ccObject.takeOverFrom(cpu_ptr)
AttributeError: 'NoneType' object has no attribute 'takeOverFrom'
Is there something I'm forgetting to instantiate? Any help would be
greatly appreciate.
Ps. Thanks for setting up the WIKI page. It has been a tremendous
help, and in my opinion a great improvement over the documentation
that was available for the previous version of m5. I hope the
community continues to add to it!
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