ORBIT-USER: Where's the WiFi device on sb2?
Pandurang Kamat
pkamat at winlab.rutgers.edu
Tue Jul 25 17:40:03 EDT 2006
ummm.. image is just what's on the disk and driver is loaded unloaded
from memory.
You probably already knew this but typed your question faster than the
speed of thought :-)
And the faq is back (thanks for pointing out), an accidental deletion of
'}}}' had messed up the wiki rendering.
-Pandurang
Einar Vollset wrote:
>
> Ah. Magic.. :-) Thanks!
>
> Out of interest, if I load the driver like this and then save the image,
> will the driver be there when
> I re-image the nodes? If so, and I then ran an experiment, would the
> nodehandler (rudely IMHO)
> unload it again?
>
> Cheers,
>
> Einar
>
> On Jul 25, 2006, at 5:15 PM, Sachin Ganu wrote:
>
>> Einar,
>>
>> You will need to load the driver using "modprobe ath_pci" prior to
>> bringing the interface ath0 up. The nodehandler does this
>> automatically. Also, at the end of the experiment, the nodehandler
>> unloads the driver.
>>
>> At the end of your slot, I will try to test "nodehandler -t -k " and
>> see if I can recreate the problem.
>>
>> On 7/25/06, Einar Vollset <einar at cs.cornell.edu> wrote:
>>>
>>>
>>>
>>> Hi,
>>>
>>> I've been trying to wrestle nodehandler to run my code and was making
>>> progress when I noticed that
>>> my experiments were a little too successful; my code was picking the
>>> 1Gbps wired network device
>>> instead of the wireless one :-)
>>>
>>> However, I appear unable to actually locate the device interface for
>>> the wireless card; I simply run
>>> `nodehandler -t -k` - which should create me a device ath0, but when
>>> I ssh into the node after the
>>> simulation I only see the two wired interfaces:
>>>
>>> node1-1:~# iwconfig
>>> eth0 no wireless extensions.
>>>
>>> eth1 no wireless extensions.
>>>
>>> lo no wireless extensions.
>>>
>>> It also doesn't like my suggestion to manually ifconfig the ath0 device:
>>>
>>> node1-1:~# ifconfig ath0 up
>>> ath0: ERROR while getting interface flags: No such device
>>> node1-1:~#
>>>
>>>
>>> Any thoughts?
>>>
>>> Cheers,
>>>
>>> Einar
>>>
>
More information about the orbit-user
mailing list