Yeah, working through all this config stuff I'm a bit frustrated by what it
is, but I'm also not sure what it should be instead.

Gabe

On Tue, Aug 8, 2017 at 12:05 AM, Andreas Hansson <andreas.hans...@arm.com>
wrote:

> Hi Gabe,
>
> It is not that simple.
>
> The whole point is that the crossbar does any address interleaving, so
> that it can be used both for memories and caches (or really any slave
> downstream). Moreover, there is no need for a single level of crossbars to
> actually have all addresses represented. It can be used to build trees,
> diamonds, etc. See the HMC construction for example where we split
> addresses across links, then quadrants, and finally to the vaults/channels.
>
> We spent quite some time thinking about how to best represent this, and I
> think the best option would actually be to use some form of sub system and
> port-group type construct, perhaps combined with a more refined AddrRange.
> There are a lot of challenges that need to be addressed though, and
> previous whiteboard discussions have not yielded a design that actually
> encompasses all the important use-cases.
>
> It would be great to see a good design for this, but it¹s definitely not
> obvious what it would be.
>
> Andreas
>
> On 08/08/2017, 03:17, "gem5-dev on behalf of Gabe Black"
> <gem5-dev-boun...@gem5.org on behalf of gabebl...@google.com> wrote:
>
> >Hi folks. I notice that there's a fair bit of code in MemConfig.py which
> >sets up a bank of memory objects to interleave memory accesses among
> >themselves and collectively act as a single memory. This seems like
> >something which should be bound up into a wrapping object, perhaps a
> >RamBank SimObject, which would abstract the complexity of setting up the
> >interleaving. There could be a specialized DramBank object which would
> >help
> >get rid of the ugly issubclass() in create_mem_ctrl function.
> >
> >Gabe
> >_______________________________________________
> >gem5-dev mailing list
> >gem5-dev@gem5.org
> >http://m5sim.org/mailman/listinfo/gem5-dev
>
> IMPORTANT NOTICE: The contents of this email and any attachments are
> confidential and may also be privileged. If you are not the intended
> recipient, please notify the sender immediately and do not disclose the
> contents to any other person, use it for any purpose, or store or copy the
> information in any medium. Thank you.
> _______________________________________________
> gem5-dev mailing list
> gem5-dev@gem5.org
> http://m5sim.org/mailman/listinfo/gem5-dev
_______________________________________________
gem5-dev mailing list
gem5-dev@gem5.org
http://m5sim.org/mailman/listinfo/gem5-dev

Reply via email to