In b4 the numbers are all set to ns, so they're closer to reality in
that case. Either way you should understand what you're simulating and
all the parameters and the assumptions based in the models. I don't
believe one default parameter is any more or less correct than another
one, if it matters to you, you should understand what the parameter
does and change it to the appropriate value for your work. Like the
warning on the DRAM model says, it hasn't been tested or validated
since the 1.X M5 releases. If you want to spend the time testing it,
validating it, and coming up with reasonably parameters, please do we
will gladly accept the patches. Even better would be to have the many
of the dram parameters automatically set based on the the other
simulated parameters.
Ali
On Nov 12, 2007, at 6:09 PM, Sujay Phadke wrote:
HIi ALi,
As you replied, we have to set the DRAM parameters
independently of the simulation setup. But I feel that these default
DRAM parameters are wrong, and will give wrong results for people
doing timing simulation. Correct me if I am wrong.
- Sujay
----- Original Message ----- From: "Ali Saidi" <[EMAIL PROTECTED]>
To: <[EMAIL PROTECTED]>; "M5 users mailing list" <m5-
[EMAIL PROTECTED]>
Sent: Monday, November 12, 2007 6:08 PM
Subject: Re: [m5-users] How to determine phyMem latency
No it means it's one tick of simulator time which is 1ps.
Ali
On Nov 12, 2007, at 5:40 PM, Rick Strong wrote:
Hi,
I noticed that the PhysicalMemory class sets memory latency to 1t
which I assume is 1 tick from looking at the python. Does this
imply that my memory latency is 1 tick of the system.membus clock
@1GHZ?
class PhysicalMemory(MemObject):
type = 'PhysicalMemory'
port = VectorPort("the access port")
range = Param.AddrRange(AddrRange('128MB'), "Device Address")
file = Param.String('', "memory mapped file")
latency = Param.Latency('1t', "latency of an access")
zero = Param.Bool(False, "zero initialize memory")
-Richard
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