Re: [Gems-users] separate user execution from os effects

[Dan Gibson <degibson@xxxxxxxx>]

Running with opal complicates the matter. You can probably still isolate 
the cache effects using the same technique, but Opal will still log 
various pipeline effects from OS code. I'm not sure what a good 
workaround would be if you need out-of-order user-only (perhaps 
SimpleScalar?)
Regards,
Dan

Thomas Yeh wrote:
> The post specifically states "assuming you are NOT using Opal", so I did 
> not try it in case the results are bogus when running with such a change.
>
>
> On Mon, 9 Oct 2006, Dave Z. wrote:
>
>   
> > I haven't tried it when running w/ opal, but as the
> > misses are related with the memory model I presume it
> > should work okay. Does it not?
> >
> > --- Thomas Yeh <tomyeh@xxxxxxxxxxx> wrote:
> >
> >     
> > > Thx for the pointer. The post describes a way to do
> > > this without running
> > > opal. Is there a similar way to do this while
> > > running opal?
> > >
> > > thx,
> > > Tom
> > >
> > > On Mon, 9 Oct 2006, Dave Z. wrote:
> > >
> > >       
> > > > Check out this thread:
> > > >
> > > >         
> > https://lists.cs.wisc.edu/archive/gems-users/2006-June/msg00050.shtml
> >     
> > > > Dave
> > > >
> > > > --- Thomas Yeh <tomyeh@xxxxxxxxxxx> wrote:
> > > >
> > > >         
> > > > > I am trying to isolate the application's behavior
> > > > > from the OS effects for
> > > > > a multithreaded application. Currently, I am
> > > > >           
> > > seeing
> > >       
> > > > > a lot of supervisor
> > > > > misses that's degrading performance.
> > > > >
> > > > > Is there a way to do this? I am running both opal
> > > > > and ruby. I see a
> > > > > previous post on this similar topic but no
> > > > >           
> > > response.
> > >       
> > > > > Any suggestions would be greatly appreciated.
> > > > >
> > > > > thx,
> > > > > Tom
> > > > >
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