SMP/HTT and Beowulf cluster on FreeBSD 7.0-RELEASE

[Julian Elischer]

Kris Kennaway wrote:
> Michael Stogsdill wrote:
>> Hey, I have a question that I can't seem to find a decent answer to. 
>> The mailing lists have had some similar topics, but they were mostly 
>> for the 6.x-RELEASE and other minor differences.
>> Heres my situation; I'm trying to create a beowulf cluster running 
>> FreeBSD 7.0-RELEASE consisting of 8 systems all running on Dual Xeon 
>> w/HTT both running at 2.8Gz. What exactly this system will be doing I 
>> can't say, so lets just think about the performance of the cluster 
>> running a benchmarking tool similar to sysbench. Because they are dual 
>> processor systems, I will be using the SMP kernel already, so I'm 
>> wondering if turning on HTT will help or hinder my Beowulf' 
>> performance. The cluster is not yet operational, otherwise I would do 
>> some tests myself!
> 
> The answer is always "HTT performance depends on your workload.  Try it 
> and see if it helps".

new processors are not quite as bad as the original HTT processors.
also, if the workload includes a mix of FP and integer work it will be 
worth having them on.

> 
> Kris
> _______________________________________________
> freebsd-smp at freebsd.org mailing list
> http://lists.freebsd.org/mailman/listinfo/freebsd-smp
> To unsubscribe, send any mail to "freebsd-smp-unsubscribe at freebsd.org"