Forgot the important part.
Earlier in the script, I have:
if options.max_insts:
for cpu in cpus:
cpu.max_insts_all_threads = options.max_insts
On Tue, Mar 23, 2010 at 9:19 PM, Michael Moeng <[email protected]> wrote:
> Hi,
>
> You can do this with repeat uses of the max_inst_all_threads parameter. The
> file configs/common/simulate.py does this for fast forwarding and warmup.
> Here is part of the script I am using:
>
> if options.max_insts:
> count = 0
> while count < options.numcpus:
> exit_event = m5.simulate()
> cause = exit_event.getCause()
> if cause != "all threads reached the max instruction count":
> break
> count += 1
>
> Good Luck,
> Michael
>
> Hello,
>> I am running a multi-programmed simulation in SE mode (16 cores, 16
>> threads, 1 thread/core).
>>
>> I want to simulate each core for a fixed (or atleast) number of
>> instructions (say 100million). With this scenario, some cores will
>> execute greater number of instructions if the thread executes faster. So
>> we may execute 100Mil, 150Mil, 200Mil, and so on.
>>
>> I was reading some of the earlier discussions on this issue (2008) and
>> there doesn't seem to be a way to do this. The max_inst_all_threads
>> works across all threads, but only for 1 cpu. Even if we assign it for
>> every cpu using:
>>
>> switch_cpu_1[i].max_inst_all_threads = max_insts
>>
>> the entire simulation exits when any 1 cpu reaches that count.
>>
>> does anyone know how to do this? I was looking at simulate.cc and
>> sim_events.cc where the CountedExitEvent object is used. If I understand
>> correctly, it decrements the counter when any thread for a given cpu
>> terminates, and it signals an M5 exit event when an cpu finishes the
>> max_insts count for all its own threads.
>>
>> Can you suggest how we can modify this to keep track of threads across
>> different cores? Also, is it a realistic model to not let the other
>> cores continue after reaching max_inst_all_threads, but to stall them
>> till the other cores catch up?
>>
>> Thanks,
>> Sujay
>>
>
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