Hi Nikolaos,
The EtherBus object was a work in progress to create an Ethernet Hub,
however I don't believe it was ever finished. You are correct in
saying that it can't be done with an Etherlink. The EtherBus object
was created before we had the level of python integration we do now,
so the only way you can probably connect them now is to derive an
object from EtherInt that requires a EtherBus pointer as a parameter
and then calls etherbus->reg(this) on it. At this point there isn't
any way to connect them in python directly but there should be
something like the way the ports are connected to a Bus. If you use
the Ports code as an example it shouldn't be that difficult to
implement similar functionality for the EtherInts (it's where the
port idea initially came from anyway). Let us know what you end up
doing and we'll try to help where we can.
Ali
On Jun 27, 2007, at 10:03 AM, Nikolas Galanis wrote:
Hi all,
I am trying to simulate a distributed system using m5 v2-b3 and
ALPHA_FS. I have been looking the example in fs.py where you build
a 2-machine system by connecting the etherint objects of the two
systems using an etherLink.
My goal is to connect the ethernet interfaces of more than two
systems, which as far as I understand cannot be done with
etherLink. There is an EtherBus class present that seems to be the
one to use to connect multiple EtherInt devices but I cannot find
out how to do it. The EtherBus has a devlist attribute and a reg()
function to add devices to the devlist but there doesn't seem to be
any way of registering devices using python.
I have tried the following in my configuration file:
/
ethBus = EtherBus()
Parent.testsys1.tsunami.etherint[0].peer = ethB/us
but the assignment is (obviously) not correct. I get the following
error:
/Traceback (most recent call last):
File "<string>", line 1, in <module>
File "build/ALPHA_FS/python/m5/main.py", line 326, in main
execfile(sys.argv[0], scope)
File "configs/myConf/myFS.py", line 120, in <module>
root = makeQuadRoot(m_test_sys[0], m_test_sys[1], m_test_sys[2],
drive_sys, options.etherdump)
File "/media/x3/m5-2.0b3/configs/common/FSConfig.py", line 119, in
makeQuadRoot
Parent.testsys1.tsunami.etherint[0].peer = ethBus
File "build/ALPHA_FS/python/m5/proxy.py", line 56, in __setattr__
"cannot set attribute '%s' on proxy object" % attr
AttributeError: cannot set attribute 'peer' on proxy object/
Shouldn't the EtherBus have some port attribute like the Bus()
class has in order to connect the various EtherInt objects?
Is there another way to make the interconnections for a distributed
memory system?
Thanks in advance,
Nikolas
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