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

Bruce Momjian <pgman@candle.pha.pa.us>

From: Bruce Momjian <pgman@candle.pha.pa.us>
To: "scott.marlowe" <scott.marlowe@ihs.com>
Cc: Ron Johnson <ron.l.johnson@cox.net>, PgSQL Performance ML <pgsql-performance@postgresql.org>
Date: 2003-05-22T21:23:41Z
Lists: pgsql-performance
scott.marlowe wrote:
> On 21 May 2003, Ron Johnson wrote:
> 
> > On Tue, 2003-05-20 at 06:27, Andrew Sullivan wrote:
> > > On Mon, May 19, 2003 at 01:28:32PM -0400, george young wrote:
> > > > Has anyone run postgres on a beowulf system? 
> > > 
> > > Can't be done.  None of the cluster systems support cross-machne
> > > shared memory (this is actually a problem for Postgres and NUMA, as
> > > well, BTW).
> > 
> > VMSclusters and Tru64 clusters do, but, of course, it has to be
> > programmed for.
> > 
> > And the licensing costs are pretty steep...
> 
> someone was on the list last year and had gotten postgresql (sorta) 
> working on mosix clusters.  The performance, I recall, was less than 
> stellar.

I think they copied and locked the shared memory for each machine that
needed it.

-- 
  Bruce Momjian                        |  http://candle.pha.pa.us
  pgman@candle.pha.pa.us               |  (610) 359-1001
  +  If your life is a hard drive,     |  13 Roberts Road
  +  Christ can be your backup.        |  Newtown Square, Pennsylvania 19073