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

[Dan Gibson <degibson@xxxxxxxx>]

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

 

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