m5 does not support checkpointing in detailed mode - there is just toooo much state to remember.  what we do is generate the checkpoint in simple CPU, and then beginning running again after the checkpoint with simple CPU or cacheCPU, and then transition to detailed CPU and take statistics from that point.

we usually use cacheCPU in order to warm up a cache system before going into detailed mode.  the number of cycles to do the warmup and the number of cycles to do the detailed run are defaulted to 1e9 and 200e6.  you can change these values if you wish.

lisa

On 4/11/06, zhangrui <[EMAIL PROTECTED]> wrote:
Hi all,
I have a question about the checkpoint usage.
When I use m5 to run netperf maerts test in a detailed full system mode with the default maerts scripts. I generat
a checkpoint to avoid Linux booting up process. But when I start m5 with -ECKPT_FILE=<checkpoint dir name> argument,
m5 reports a warning `warn: Not unserializing '': no section found in checkpoint.'. The messages in client console
show that the simulation process paused when jump to kernel. A few minute later, m5 reported `panic: PTE GH field != 0'
and exits.
Can m5 support the checkpoint unserialization in detailed full system mode? If so, how to configure it? I can't find
any document about this.

Thanks a lot.




Richard
2006-04-11



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