Thanks for the quick response Andreas,
What are the correct tracing flags for the monitor?
The snippet from my config.ini
[system.cpu.L1MONITOR]
type=CommMonitor
bandwidth_bins=20
burst_length_bins=20
clk_domain=system.cpu_clk_domain
disable_addr_dists=true
disable_bandwidth_hists=false
disable_burst_length_hists=false
disable_itt_dists=false
disable_latency_hists=false
disable_outstanding_hists=false
disable_transaction_hists=false
eventq_index=0
itt_bins=20
itt_max_bin=100000
latency_bins=20
outstanding_bins=20
read_addr_mask=18446744073709551615
sample_period=1000000000
trace_file=icachetrace.ptrc
transaction_bins=20
write_addr_mask=18446744073709551615
master=system.cpu.icache.cpu_side
slave=system.cpu.icache_port
and the code from BaseCpu.py
#self.icache_port = ic.cpu_side
# add a communication monitor, and also trace all the packets
self.L1MONITOR = CommMonitor(trace_file = 'icachetrace.ptrc');
self.icache_port = self.L1MONITOR.slave
self.L1MONITOR.master = ic.cpu_side
The only strange warning I am getting is
0: system.cpu.L1MONITOR: Created monitor system.cpu.L1MONITOR with sample
period 1000000000 ticks (<bad arg type for float format> s)
Thanks again for your help.
From: Andreas Hansson [mailto:[email protected]]
Sent: Monday, June 23, 2014 5:53 PM
To: Salajegheh, Negin; gem5 users mailing list
Subject: Re: [gem5-users] CommMonitor to capture cache traces
Hi Negin,
I have added some comments regarding CommMonitor use to the Wiki a while back:
http://www.m5sim.org/General_Memory_System#Tracing_and_traffic_generation
The command line you have included is using the debug flags to capture debug
output. The CommMonitor packet tracing is based on parameters belonging to the
monitor itself, and has nothing to do with the "--debug-file" and
"--debug-flags". Are you also setting the correct tracing flags for the monitor
that you are instantiating. Perhaps you could copy in the snippet from the
CommMonitor section in your config.ini.
Thanks,
Andreas
From: <Salajegheh>, Negin via gem5-users
<[email protected]<mailto:[email protected]>>
Reply-To: "Salajegheh, Negin"
<[email protected]<mailto:[email protected]>>, gem5 users
mailing list <[email protected]<mailto:[email protected]>>
Date: Monday, 23 June 2014 16:08
To: "[email protected]<mailto:[email protected]>"
<[email protected]<mailto:[email protected]>>
Subject: [gem5-users] CommMonitor to capture cache traces
I've read these threads:
http://www.mail-archive.com/[email protected]/msg09221.html and
https://www.mail-archive.com/[email protected]/msg08511.html
I have successfully attached a CommMonitor between cpu and cache. The
CommMonitor appears in config.ini and the trace .ptrc file gets generated.
However, it contains only 1 packet.
Command line:
build/ARM/gem5.opt --debug-flags=CommMonitor --debug-file="trace-bbench.gz"
configs/example/fs.py --caches --l2cache --mem-size=256MB
--kernel=vmlinux.smp.mouse.arm --frame-capture --restore-with-cpu=timing
--num-cpus=1 --cpu-clock=2.0GHz -b bbench-ics --num-l2caches=1 --l1d_size=32kB
--l1d_assoc=8 --l1i_size=32kB --l1i_assoc=4 --l2_size=1MB --l2_assoc=8
Do I have to dumpstat regularly? Why is there only one packet captured even
though I am running bbench which supposedly generates a lot of cache events?
Thanks for your help
-Negin
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