Re: [Bug-gnubg] multiprocessor on linux

[Achim Mueller]

* Jim Segrave wrote on 02 Dez 2003:

> On Tue 02 Dec 2003 (15:25 +0100), Achim Mueller wrote:
> > Hi folks (especiallay Joern),
> > 
> > I just got access to a compaq dl 580 g3 with 4 xeon 2.8ghz and
> > hyperthreading activated. I would like to do some work using smp.
> > 
> > What do I have to do for activating and using this feature? For now
> > a rollout uses only one CPU.
> 
> Start coding. Come back in a month or two :-)

Ahhh, I thought it's already implemented when reading two threads
from july (one concerning MS Windows).

> For analysis, issuing separate moves to separate clients would work
> reasonably well, although some caching would be lost. For rollouts,
> passing a starting position and the rollout settings to each client and
> then doing a rollout locally and waiting for the clients to complete
> is the best method (needs keepalives and timeouts to prevent one
> client stopping from hanging the system), but this would allow for
> stopping the rollout on the master and getting to a consistent state
> for saving a rollout so it could be extended.

Ok, I will start different instances of gnubg then. It's a shame
watching this "top":

  cpu    user    nice  system    irq  softirq  iowait idle
total    0,0%    0,0%    0,0%   0,0%     0,0%    0,0%   99,9%
cpu00    0,0%    0,0%    0,0%   0,0%     0,0%    0,0%  100,0%
cpu01    0,0%    0,0%    0,0%   0,0%     0,0%    0,0%  100,0%
cpu02    0,0%    0,0%    0,0%   0,0%     0,0%    0,0%  100,0%
cpu03    0,0%    0,0%    0,0%   0,0%     0,0%    0,0%  100,0%
cpu04    0,0%    0,0%    0,0%   0,0%     0,0%    0,0%  100,0%
cpu05    0,0%    0,0%    0,0%   0,0%     0,0%    0,0%  100,0%
cpu06    0,0%    0,0%    0,0%   0,0%     0,0%    0,0%   99,0%
cpu07    0,0%    0,0%    0,0%   0,0%     0,0%    0,0%  100,0%


Ciao

Achim


-- 
achim mueller, anne-frank-str. 25, D-48431 rheine
+49 (0)5971 83767, +49 (0)163 8458340
 
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