Re: [Gems-users] Ruby Initialization Error

[Yunlian Jiang <yunlian@xxxxxxxxx>]

Thank you for your reply.
Indeed I want to simulate a CMP processor with 2 or 4 cores on it.
I noticed that I should set $num_cpus at the very begining.
I found that after I set $num_cpus=2 on Cashew, the ruby at least initiated successfully.
Does it mean I can continue my experiment on Cashew?

Another question is that, if Cashew works, should I just set $num_cpus before hand?
I mean that I can adjust cache, cpu speed etc at run time.

Thanks again.

On Mon, Sep 21, 2009 at 2:02 PM, Philip Garcia <pcgarcia@xxxxxxxx> wrote:

are you using the same checkpoint for both one and two processor
runs?  If so that definitely won't work, as you need to boot
checkpoints with the same number of CPUs as you set ruby to use
(unless using SMT in Opal).  Also, does Cashew work with multi-cpus?
I thought most of the solaris checkpoints were from sarengeti, and for
linux, I've always used bagle.

Phil

On Sep 21, 2009, at 11:32 AM, Yunlian Jiang wrote:

> I am now using simics 3.0.31 and gems-2.1.
> I use the cashew-common.simics to build a checkpoint and then load
> Ruby.
> When I set ruby0.setparam g_NUM_PROCESSORS  to 1
> The initialization goes well.
> But when I set set ruby0.setparam g_NUM_PROCESSORS  to 2
> It dumps out the following error
>
> Creating event queue...
> Creating event queue done
> Creating system...
>   Processors: 2
> Segmentation fault (SIGSEGV) in main thread
> The simulation state has been corrupted. Simulation cannot continue.
> Please restart Simics.
>
> What would be the problem? Thanks!
>
> --
> Yunlian

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-- 
Yunlian