[Beowulf] Shared memory

[Michael Will]

Michael Will wrote:

> I was just yesterday benchmarking our A3400 quad-opteron with dual cores
> using UnixBench 4.1 which is not really an SMP benchmark except for the
> 8 and 16-concurrent shell script runs, and was not too impressed with 
> the speed
> increase of those runs either,  judging how much more the CPUs cost.
>
> Compare A3140  (dual opteron 248 single core) with A3400 (quad opteron 
> 875 dual core):
>
>
> A3150/raid5     dual opteron 248     8G     FC3     668     859     443
> A1300     dual opteron 852     4G     FC3     806     964     497
> A1300     dual opteron 875     4G     RHEL3u5     724     1329     744
> A3400     quad opteron 875     32G     RHEL3u5     736     1691     1030


Sorry for the messed up table. Here we go. Index Score is a compound of 
the weighted
results of UnixBench 4.1, 8-scripts and 16-scripts is the specific 
result in lines per seconds
achieved when running 8 resp. 16 shell-scripts concurrently, which are 
two partial tests of
the Benchmark Suite.

Machine           CPU                       RAM OS              Index 
Score     8-scripts lps     16-scripts lps
A3150/raid5    dual opteron 248     8G     FC3               668        
         859                 443
A1300            dual opteron 852      4G     FC3               
806                 964                 497
A1300            dual opteron 875      4G     RHEL3u5     
724               1329                 744
A3400            quad opteron 875   32G     RHEL3u5     
736               1691               1030

Michael Will