[auton-users] Lop4

[Jacob Joseph]

I've brought lop4 back online, but with only 3GB of ram.  I've found one 
of the modules to have gone bad and will probably receive the 
replacement later next week, requiring a few minutes of downtime at that 
point.

In the meantime, I don't recommend running very time-sensitive 
benchmarks on this machine.  Due to how the memory is segmented on the 
Opterons, each CPU has faster access to a single group of memory and 
slightly slower access to the other CPU's memory.  Normally, we 
interleave accesses to normalize this difference(about 10%).  However, 
with 2GB on one CPU and 1GB on the other, I'm not positive a slight 
difference in runtimes will not become apparent.

I'll email again when I have a better estimate of the ram ETA.

-Jacob