Re: [Gems-users] Hello, I'm new user about GEMS

[조정욱 <jmanbal@xxxxxxxxx>]

Dear, Polina Dudnik

Thank you for your reply.


You mean the gems only support detailed cache coherence protocol??
The timing simulator means only simiulator caculate hit, miss time??


Now, I'm conducting researching on cache in x86-64.
Gems support amd-hammer??

Above all, the method is same to simics??
To make gcache in simics is add some code in start up file.
Gems is same way to make cache or cache coherence protocol.

2009/12/3 Polina Dudnik <pdudnik@xxxxxxxxx>

Hi Jungwook,

GEMS is a detailed memory system simulator. So, it does check L1, then L2 and only then memory. However, the important bit is that as GEMS is right now, it is only a detailed timing simulator, so the cache protocol does not keep track of the data. You will get the most recent data, but not by virtue of the coherence protocol, but via simics. 

Hope this helps. 

Polina

On Fri, Nov 27, 2009 at 6:46 AM, 조정욱 <jmanbal@xxxxxxxxx> wrote:

Dear Gems User,

Hello, I'm conducting a research project on NUCA architecture.

So I used simics  and tried to modify simics code.
The simics version I used is 3.0.

Today, I know that the cache simulation the Simics support didn't save data.
I mean g-cache save just tag and main memory address.
Is it right??


I heard the Gems is able to simulate cache( absolutely NUCA ).
I wander the cache to support Gems save the data???

For exampler,
When cpu wants data, first check L1 cache and then L2 cache and finally main memory.
If the data exist in L1 cache, cpu receive the data from L1 cache.


plz explain in detail.

Thank you for consideration.


Best regards,
Jungwook

 

_______________________________________________
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.

_______________________________________________
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.