Re: [Gems-users] Error loading opal

[Dan Gibson <degibson@xxxxxxxx>]

The stats from Simics+Ruby configurations relect those that you would see with in-order SC cores that have a CPI of 1 except for memory accesses.

Regards,
Dan

On Fri, May 29, 2009 at 3:11 PM, Luo, Yan <Yan_Luo@xxxxxxx> wrote:

Hi Polina

I found the previously posted solution to this problem (exactly the same). The link is https://lists.cs.wisc.edu/archive/gems-users/2009-March/msg00116.shtml . Then I followed the steps and recompiled opal. However, the result is even worse: simics seg fault (logs are below).

Question: Can I use Ruby without Opal, if my focus is the cache/memory instead of OOO execution of processor? I just want to make sure that Ruby's stats are still valid without Opal.

Thanks
Yan

== log from simics ==

simics> instruction-fetch-mode instruction-fetch-trace
[cpu0 info] Note that on this cpu, instruction-fetch-trace is implemented using instruction-cache-access-trace with a suitable cache line size.
simics> istc-disable
Turning I-STC off and flushing old data
simics> dstc-disable
Turning D-STC off and flushing old data
simics> cpu-switch-time 1
The switch time will change to 1 cycles (for CPU-0) once all processors have synchronized.
simics> load-module ruby
successful installation of the ruby timing model.
simics> load-module opal

Queue registration cpu0
successful installation of the opal queue.
hfa_init_local done:
simics> c
Segmentation fault (SIGSEGV) in main thread
The simulation state has been corrupted. Simulation cannot continue.
Please restart Simics.
[cpu0] v:0x00000000f00000c0 p:0x0003f8000c0  ba 0xf000c428
simics> Command 'con0.wait-for-string' interrupted.

-----Original Message-----
From: gems-users-bounces@xxxxxxxxxxx on behalf of Polina Dudnik
Sent: Fri 5/29/2009 12:05
To: Gems Users
Subject: Re: [Gems-users] Error loading opal

Yan,

This issue has come up before on the GEMS users mailing list. Please see if
you can find those threads and maybe you can find the solution to your
problem there. If nothing that you find works, please get back to us with
what you've tried and how it failed.

Polina

On Fri, May 29, 2009 at 10:55 AM, Luo, Yan <Yan_Luo@xxxxxxx> wrote:

> Hello,
>
> I am using Simics 3.0.31 and gems 2.1 on amd64-linux. I simulate a Solaris
> 10 on serengeti/abisko target. The compilation of ruby and opal went well.
> Loading ruby was OK. But I got the following error when loading opal.
>
> simics> load-module opal
> Error loading module 'opal': Failed to load module 'opal'
> ('/home/yluo/gems/simics_3_workspace/amd64-linux/lib/opal.so'): "undefined
> symbol:
> _ZN22generic_cache_templateI21generic_cache_block_tE18registerCheckpointEP8confio_t"
>
> Any hints? BTW, are Ruby's stats reliable without Opal loaded in the
> simulation?
>
> Thanks
> Yan
>
> ===== log from simics =====
>
> simics> read-configuration
> /home/yluo/gems/simics/targets/serengeti/after-login-simicsfs.conf
> simics> instruction-fetch-mode instruction-fetch-trace
> [cpu0 info] Note that on this cpu, instruction-fetch-trace is implemented
> using instruction-cache-access-trace with a suitable cache line size.
> simics> istc-disable
> Turning I-STC off and flushing old data
> simics> dstc-disable
> Turning D-STC off and flushing old data
> simics> cpu-switch-time 1
> The switch time will change to 1 cycles (for CPU-0) once all processors
> have synchronized.
> simics> load-module ruby
> successful installation of the ruby timing model.
> simics> load-module opal
> Error loading module 'opal': Failed to load module 'opal'
> ('/home/yluo/gems/simics_3_workspace/amd64-linux/lib/opal.so'): "undefined
> symbol:
> _ZN22generic_cache_templateI21generic_cache_block_tE18registerCheckpointEP8confio_t"
>
> simics>
>
>
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