Re: [Gems-users] Parameter Configuration

[Mike Marty <mikem@xxxxxxxxxxx>]

ruby0.tracer-output-file is used to generate a request trace from the
processors.

You can probably use an existing tool to get a trace filtered by the
caches.  But you may wish to consider adding to the code as well.  There
is a flag called PROTOCOL_DEBUG_TRACE in ruby/config/rubyconfig.defaults.
This is already set to true.  What this does is enable the tracing of
cache coherence protocol transitions.  To get a memory access trace, you
could probably post-process this trace by simply grepping for the
"Directory" transitions.

The debug output file is set with this command:
   ruby0.debug-output-file your_file_name.txt

However you also must specify a starting time to enable the trace.  To
start immediatly, specify a starting time of 1 by doing:
   ruby0.debug-start-time "1"

If you are interesting in adding to the code to make a cleaner trace, let
us know and we can give code pointers.

--Mike


> Thanks, Mike.
> One more question:
> What does ruby0.tracer-output-file do? What I want to do right now is
> to collect memory access trace filtered by cache? Any existing tools
> to do this? If not, which part of code I should look into.
>
>
> On Wed, 2 Feb 2005 17:56:09 -0600 (CST), Mike Marty <mikem@xxxxxxxxxxx> wrote:
> > You can also set compile-time defaults in the file
> > ruby/config/rubyconfig.defaults
> >
> > You will find parameters specifying cache sizes, associativies, memory
> > latencies, etc.
> >
> > --Mike
> >
> >
> > >
> > > Weihang,
> > >
> > > Look at the file mfacet.py for examples of how to set the ruby parameters
> > > of different data types.
> > >
> > > For instance integer parameters are set using the command:
> > > "ruby0.setparam <integer>"
> > > while booleans and strings are set using the command:
> > > "ruby0.setparam_str <string>"
> > >
> > > You can set any parameter listed in the file ruby/config/config.include
> > >
> > > Brad
> > >
> > >
> > > On Wed, 2 Feb 2005, Weihang Jiang wrote:
> > >
> > > > Hi,
> > > >    Where can I find information about how to set  parameters of ruby?
> > > > I try ruby0.listparam, but it returns nothing.
> > > >
> > > > --
> > > > Weihang Jiang
> > > > _______________________________________________
> > > > Gems-users mailing list
> > > > Gems-users@xxxxxxxxxxx
> > > > http://lists.cs.wisc.edu/mailman/listinfo/gems-users
> > > >
> > > _______________________________________________
> > > Gems-users mailing list
> > > Gems-users@xxxxxxxxxxx
> > > http://lists.cs.wisc.edu/mailman/listinfo/gems-users
> > >
> >
>
>
> --
> Weihang Jiang
>