Re: [Gems-users] Benchmark warm up for transactional memory

[Dan Gibson <degibson@xxxxxxxx>]

I'm referring to whatever release is most recent, which according to our 
own download directory is v1.4. To be honest, I've been a little 
out-of-the-loop lately with respect to GEMS releases and version changes.
Regards,
Dan

Shantanu Gupta wrote:
> Thanks Dan. I like the idea of using a magic instruction to create a cold 
> checkpoint.
> By the way, which LogTM release are you refering to ? I am using the one 
> that came along with Gems 1.4. Is there another more recent one available, 
> if yes, where I can get it ?
> Shantanu
>
>
> On Wed, 15 Aug 2007, Dan Gibson wrote:
>
>   
> > Shantanu Gupta wrote:
> >     
> > > I have two related questions:
> > >
> > > 1) Is the creation of a benchmark's warm checkpoint a requirement for the
> > > correct execution inside ruby ? Or it's only applied for a better
> > > simulation performance.
> > >
> > >
> > >       
> > The warm checkpoint is not required. If you dont' care about warming up
> > the caches, or are willing to warm them up at the onset of every
> > simulation, you can get away with only "cold" checkpoints.
> >     
> > > 2) Is it even possible to create a cold checkpoint for a transactional
> > > memory benchmark ? Because it seems to me that without loading ruby
> > > module, transactional memory benchmark will fail to execute correctly.
> > >
> > >
> > >       
> > The Tourmaline module will perform functional simulation of
> > transactional memory, though it is out-of-date with respect to the LogTM
> > latest release. It is best if you stop your "cold" checkpoint before any
> > begin_xact's are encountered... usually with a "magic" instruction of
> > some sort.
> >
> > Regards,
> > Dan
> >     
> > > Shantanu
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