Which GigE NIC for reliable use?
sgk at troutmask.apl.washington.edu
Thu Jun 21 16:09:07 UTC 2007
I've been experiencing problems with the bge device
for several weeks. In this time, I've tried tuning
every imaginable parameter that I could find.
There appear to be several related problems:
node10:kargl netstat -I bge1
Name Mtu Network Address Ipkts Ierrs Opkts Oerrs Coll
bge1 9000 <Link#2> 00:e0:81:40:48:93 81505160 238721 81933513 9 0
bge1 9000 192.168.0.0 node10 81504878 - 81933689 - -
Notice the Ierrs value continuously grows with the MPI application
I have runs.
In /var/log/messages one finds:
Jun 20 23:20:42 node10 kernel: bge1: watchdog timeout -- resetting
Jun 20 23:20:42 node10 kernel: bge1: link state changed to DOWN
Jun 20 23:20:46 node10 kernel: bge1: link state changed to UP
This DOWN/UP breaks the MPI application and leads to several
additional messeages of the form.
Jun 20 23:22:33 node10 kernel: TCP: [10.208.78.111]:54801 to
[10.208.78.111]:49376 tcpflags 0x10<ACK>; syncache_expand: Segment failed
SYNCOOKIE authentication, segment rejected (probably spoofed)
So, I plan to replace all of the bge devices with a reliable,
robust GigE NIC. Anyone have a suggestion for such a cards?
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