Re: [Gems-users] Segment Fault when calling dump-stats

[Dan Gibson <degibson@xxxxxxxx>]

Thats a good theory, Berkin. I haven't tried loading opal but not calling init -- you could be right.

Berkin Ozisikyilmaz wrote:

I also get this error. And I think what causes it is to load module opal and
then not initialize and use it. I think once it opal is loaded it links with
ruby and need to run opal. I am not sure though. I had asked about this an
correctness of the simulation in this way but nobody has replied. 

Regards,
berkin

-----Original Message-----
From: gems-users-bounces@xxxxxxxxxxx [mailto:gems-users-bounces@xxxxxxxxxxx]
On Behalf Of Dan Gibson
Sent: 2008-02-21 18:14
To: Gems Users
Subject: Re: [Gems-users] Segment Fault when calling dump-stats

At first glance, it seems to me you're incorrectly specifying the main 
memory size to Ruby.
512MB = 536870912 bytes

This could be the cause of your problem.

Regards,
Dan

Xuan Qi wrote:
  

Hi everyone,

I am a beginner of GEMS/simics. I installed solaris10 on a sarek machine
with 2 cores and 512MB memory. I am trying to make the ruby and opal work 
correctly now. I compiled them with MOESI_CMP_directory protocol. I use 
the 
following script to start the target machine and ruby:

read-configuration 2core.conf
cpu-switch-time 1
instruction-fetch-mode instruction-fetch-trace
istc-disable
dstc-disable
magic-break-enable
load-module ruby
load-module opal
ruby0.setparam g_NUM_PROCESSORS 2
ruby0.setparam g_MEMORY_SIZE_BYTES 524288
ruby0.init

After I run some simple program on the target machine, I call 
ruby0.dump-stats. But, I always get this error message:

Segmentation fault (SIGSEGV) in main thread
The simulation state has been corrupted. Simulation cannot continue.
Please restart Simics.

I am wondering what could be the problem and where I should look at to fix
    

this problem. Is it because the inconsistency of ruby cache and simics 
g-cache? BTW, do ruby and opal have to be loaded together? Thanks a lot!

Best regards,
Xuan Qi

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