Hi, all,
I write a script with more than 2 level cache and some other special caches
implemented by ourselves. And now we are trying to test our model with
benchmarks. I want to add the –fast forward option to my scripts. I checked the
Simulation.py, se.py and switcheroo.py about how they implemented this part. My
code logic is as follows:
system.cpu = AtomicSimpleCPU(cpu_id=0)
switch_cpu = DerivO3CPU(switched_out = True, cpu_id=0)
//adding our cache configs
process = Process()
process.cmd = ['/home/syuan3/gem5/tests/test-progs/hello/bin/x86/linux/hello']
system.cpu.workload = process
system.cpu.max_insts_any_thread = 2000
system.cpu.createThreads()
switch_cpu.system = system
switch_cpu.workload = process
switch_cpu.clk_domain = system.cpu.clk_domain
switch_cpu.progress_interval = system.cpu.progress_interval
switch_cpu.isa = system.cpu.isa
switch_cpu.max_insts_any_thread = 4000
switch_cpu_list =[(system.cpu, switch_cpu)]
system.switch_cpu = switch_cpu
root = Root(full_system = False, system = system)
m5.instantiate()
print("Beginning Simulation!")
exit_event = m5.simulate()
m5.switchCpus(system,switch_cpu_list)
m5.stats.reset()
exit_event = m5.simulate()
But I got a warn like this: warn: add_child('system'): child 'system' already
has parent
The reason seems to be the code “switch_cpu.system = system”, so I comment this
line.
But I got another assert failed: gem5.opt: build/X86/cpu/base.cc:634: virtual
void BaseCPU::takeOverFrom(BaseCPU*): Assertion `old_itb_port->isConnected()'
failed.
Does anyone has insight about this part or know how to implement
fast-forwarding in our own script?
Best regards.
Yuan
Sent from Mail for Windows 10
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