Re: postgres on a beowulf? (AMD)opteron?

george young kirjutas E, 19.05.2003 kell 20:28:
> Has anyone run postgres on a beowulf system? 

I don't think that postgresql will easyly port to beowulf clusters.

> I'm shopping for a new server.  One candidate would be a
> quad opteron (64-bit AMD "hammer") machine.  Another approach might
> be a beowulf of single or dual opterons.  I imagine the beowulf
> would be a bit cheaper, and much more expandable, but what about
> the shared memory used by the postgres backends?  I gather that
> postgres uses shared memory to coordinate (locks?) between backends?
> 
> I have a smallish DB (pgdump|bzip2 -> 10MB), with ~45 users logged in
> using local X(python/gtk) postgres client apps. 

Why do you want such a monster machine for this smallish DB ?

Are there any special performance requirements you are not telling us
about ?

> Will the much slower shared memory access between beowulf nodes be
> a performance bottleneck?  

I guess that it will not run at all ;(

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Hannu