Re: [Gems-users] How to config memory system

[Edward Lee <edwl202@xxxxxxxxx>]

Hi Dan,

By fixed memory latency, do you mean even the SMP protocols (without
_m) with distributed memory controllers establish a UMA system not a
NUMA?

Thanks,

Ed

On Sat, Apr 3, 2010 at 10:43 AM, Dan Gibson <degibson@xxxxxxxx> wrote:
> 1. The number of memory controllers is a function of the network topology.
> They appear in the topology as "Directory Memory" objects. This is true
> regardless of whether you happen to be using a 'CMP' or 'SMP' protocol.
> 2. Memory controllers are shared by all processors.
> 3. In GEMS, Memory Controller = Memory Channel.
>
> Bonus extra response: Only protocols that end in _m actually use a realistic
> memory controller. All other protocols just assume memory has a fixed
> latency.
>
> Regards,
> Dan
>
> 2010/4/3 张轶 <zhangyi@xxxxxxxxxxxxxx>
>>
>> Hi, all
>>
>> Currently, I am using GEMS 2.1 to perform simulation and have some
>> confusions on memory configs:
>> 1. I am wondering, in GEMS how to set the numbers of memory controller for
>> CMP and SMP system? Is it the same in both CMP and SMP?
>>
>> 2. Will memory controller be shared by all processors?
>>
>> 3. Is memory controller the same thing to memory channels?
>>
>> Many thanks for your help!
>>
>> Zhang Yi
>>
>> _______________________________________________
>> Gems-users mailing list
>> Gems-users@xxxxxxxxxxx
>> https://lists.cs.wisc.edu/mailman/listinfo/gems-users
>> Use Google to search the GEMS Users mailing list by adding
>> "site:https://lists.cs.wisc.edu/archive/gems-users/"; to your search.
>>
>>
>
>
>
> --
> http://www.cs.wisc.edu/~gibson [esc]:wq!
>
> _______________________________________________
> Gems-users mailing list
> Gems-users@xxxxxxxxxxx
> https://lists.cs.wisc.edu/mailman/listinfo/gems-users
> Use Google to search the GEMS Users mailing list by adding
> "site:https://lists.cs.wisc.edu/archive/gems-users/"; to your search.
>
>
>