Hello,
I want to run the following. I am having 2 different cores, with separate L1
caches and I want them to run the same benchmark. So what I want to do for
example is : if my benchmark has 2 intervals, to run the first interval on the
one core and the second one in the other. While one core is running I want the
other one to do nothing.
If I run all the intervals on the same core, my simulation completes
successfully. So now I want to do the following:
Try to perform that switch. I have set swiched_out for core B (the one
initially doing nothing) to True.
So, I did this:
m5.switchCpus([(system.CpuA,system.CpuB)])
and I am getting this error:
File "/src/python/m5/simulate.py", line 272, in switchCpus
"New CPU (%s) is already active." % (new_core,)
RuntimeError: New CPU (system.CpuB) is already active.
Why is it active? I have set system.cpuB.switced_out to True for that reason
(to be inactive).
Here is the switchCpus from the simulate.py (where the exception is being
raised).
def switchCpus(cpuList):
if not isinstance(cpuList, list):
raise RuntimeError, "Must pass a list to this function"
for item in cpuList:
if not isinstance(item, tuple) or len(item) != 2:
raise RuntimeError, "List must have tuples of (oldCPU,newCPU)"
old_cpu_set = set([old_cpu for old_cpu, new_cpu in cpuList])
for old_cpu, new_cpu in cpuList:
if not isinstance(old_cpu, objects.BaseCPU):
raise TypeError, "%s is not of type BaseCPU" % old_cpu
if not isinstance(new_cpu, objects.BaseCPU):
raise TypeError, "%s is not of type BaseCPU" % new_cpu
if new_cpu in old_cpu_set:
raise RuntimeError, \
"New CPU (%s) is in the list of old CPUs." % (old_cpu,)
if not new_cpu.switchedOut():
raise RuntimeError, \
"New CPU (%s) is already active." % (new_cpu,)
if old_cpu.switchedOut():
raise RuntimeError, \
"Old CPU (%s) is inactive." % (new_cpu,)
Regards,
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