I'm running into the same problem. I've instrumented the code and it appears to
me that the two ThreadContext objects are sharing the same Predecoder object.
One thread does a Predecoder::doReset() and the other thread gets an incorrect
origPC.
The inorder model has a Predecoder object for each ThreadContext. The O3Cpu has
a single Predecoder object in the DefaultFetch object.
Michael Levenhagen
On Thu, Apr 26, 2012 at 2:59 PM, Ankita (Garg) Goel <gargankita at
gmail.com>wrote:
> Hi Nilay,
>
> You are right. I fixed this but I still get errors with smt:
>
> # build/X86/gem5.opt configs/example/spec.py --cpu-type=detailed -n 1
> --cmd="burnP6;burnP6" --caches --l2cache
>
> panic: Unrecognized/invalid instruction executed:
>
> {
> leg = 0,
> rex = 0,
> op = {
> num = 1,
> op = 0xdc,
> prefixA = 0,
> prefixB = 0
> },
> modRM = 0xdc,
> sib = 0,
> immediate = 0,
> displacement = 0
> dispSize = 0}
>
> @ cycle 515088
> [invoke:build/X86/arch/x86/faults.cc, line 131]
>
> This is with cpuburn program. But I have tried several benchmarks/commands
> which work fine without smt. Not sure what could be the reason.. any ideas
> folks ?
>
> Regards,
> Ankita
>
> On Sun, Apr 8, 2012 at 7:47 PM, Nilay Vaish <nilay at cs.wisc.edu> wrote:
>
>> In the first hunk of the patch, options.cmd.split(';') will return a list
>> of strings, not a numeric value. The check should always fail. Are you sure
>> it is working correctly?
>>
>> --
>> Nilay
>>
>>
>> On Sun, 8 Apr 2012, Ankita (Garg) Goel wrote:
>>
>> Hi,
>>>
>>> The configs/example/se.py script has a small error that does not allow
>>> proper workload assignment to SMT threads. I made the following changes
>>> to
>>> fix that part:
>>>
>>> --- a/configs/example/se.py
>>> +++ b/configs/example/se.py
>>> @@ -111,11 +111,11 @@ if options.bench:
>>> print >>sys.stderr, "Unable to find workload for %s: %s" %
>>> (buildEnv['TARGET_ISA'], app)
>>> sys.exit(1)
>>> else:
>>> - process = LiveProcess()
>>> - process.executable = options.cmd
>>> - process.cmd = [options.cmd] + options.options.split()
>>> - multiprocesses.append(process)
>>> -
>>> + if options.cmd.split(';') == 1:
>>> + process = LiveProcess()
>>> + process.executable = options.cmd
>>> + process.cmd = [options.cmd] + options.options.split()
>>> + multiprocesses.append(process)
>>>
>>> if options.input != "":
>>> process.input = options.input
>>> @@ -157,6 +157,7 @@ if options.cpu_type == "detailed" or options.cpu_type
>>> == "inorder":
>>> if errouts and errouts[smt_idx]:
>>> smt_process.errout = errouts[smt_idx]
>>> process += [smt_process, ]
>>> + multiprocesses.append(process)
>>> smt_idx += 1
>>> numThreads = len(workloads)
>>>
>>> I am simulating X86 with detailed core. The simulation aborts with the
>>> following error:
>>>
>>> command line: build/X86/gem5.opt configs/example/se.py
>>> --cpu-type=detailed
>>> -n 1 --cmd=test;test --caches --l2cache --l3cache --clock=3400MHz
>>> --maxinsts=100000
>>> Global frequency set at 1000000000000 ticks per second
>>> 0: system.remote_gdb.listener: listening for remote gdb #0 on port 7002
>>> 0: system.remote_gdb.listener: listening for remote gdb #1 on port 7003
>>> **** REAL SIMULATION ****
>>> info: Entering event queue @ 0. Starting simulation...
>>> panic: Tried to read unmapped address 0x4d2f7cd.
>>> @ cycle 226380
>>> [invoke:build/X86/arch/x86/**faults.cc, line 160]
>>> Memory Usage: 1025680 KBytes
>>> Program aborted at cycle 226380
>>> Aborted
>>>
>>> Any ideas of what might be going wrong ? I'd be happy to provide more
>>> debug
>>> information. Thanks for your help !
>>>
>>> --
>>> Regards,
>>> Ankita
>>> Graduate Student
>>> Department of Computer Science
>>> University of Texas at Austin
>>>
>>> ______________________________**_________________
>> gem5-users mailing list
>> gem5-users at gem5.org
>> http://m5sim.org/cgi-bin/**mailman/listinfo/gem5-users<http://m5sim.org/cgi-bin/mailman/listinfo/gem5-users>
>>
>
>
>
> --
> Regards,
> Ankita
> Graduate Student
> Department of Computer Science
> University of Texas at Austin
_______________________________________________
gem5-users mailing list
[email protected]
http://m5sim.org/cgi-bin/mailman/listinfo/gem5-users
