[USRP-users] about overflow on laptop

Ting Wu wu.ting at comf5.comm.eng.osaka-u.ac.jp
Mon Apr 22 11:15:45 EDT 2013



The problem is possibly with the lan card.

Is the lan card of your computer intel 82577 or intel 82579?

When I used computers with these two types of lan cards, I always saw
overflow problems.

Later when we buy new computers, we avoid these two types of lan cards and
we never see the problem again.




Ting Wu


From: USRP-users [mailto:usrp-users-bounces at lists.ettus.com] On Behalf Of
Sent: Monday, April 22, 2013 11:06 PM
To: usrp-users at lists.ettus.com
Subject: [USRP-users] about overflow on laptop


Dear list,
Now I met a very strange overflow problem with my new laptop. My code works
fine on my old desktop but now I have got a new laptop. I always get
overflow when I connect to usrp N210. Even if I just test the benchmark with
very low bitrate (250khz, gmsk), I still met overflow. 

I am quite sure it should not be because of the performance of CPU, because
the use of CPU is just around 50% (CPU is i7-3520M 2.9ghz*4). I have tried a
lot but still can not find out where is the problem. 

The uhd I used is 003.005.000

Anyone has met the same problem? Any suggestions would be appreciate. 

Best regards



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