[Gems-users] Timing Model

["Daniele Mangano" <daniele.mangano@xxxxxxxxxxxx>]

Hi,

 

I’m Daniele Mangano from University of Pisa.

 

I would like to learn more about GEMS memory timing model when the MSI_MOSI_CMP_directory protocol is used.

 

My first question maybe is quite banal:

What is the latency unit? Is it the ruby cycle?

 

In the ruby configuration file I see the following timing parameters:

 

-          L1_response_latency

-          L2_response_latency

-          L1_request_latency

-          L2_request_latency

 

What do response_latency and request_latency parameters refer?

 

Among the parameters I also see on_chip_link_latency and network_link_latency. I think that the first one is ignored when the file_specified network topology is used. Is it right?

 

What does network link latency refer?

 

Is cache timing model independent from the number of sets? If the right response is yes, it means that a parallel search is assumed. Is it right?

 

Thank you in advance.

 

Best regards,

     Daniele

________________________________
Daniele Mangano, Ph.D Student
Dept. of Information Engineering

University of Pisa

Via Diotisalvi, 2 - 56122 Pisa, Italy

Tel  +39 050 2217 458

Fax +39 050 2217 600

E-mail: daniele.mangano@xxxxxxxxxxxx