RE: Alpha 21264.

["Mailinglist --> PUBLIC" <Support-List@xxxxxxxxxxx>]

Hi !

(a) I haven't used a dual processor before, so how much performance can you
expect over a single CPU machine when working on a single job using an SMP
linux kernel. Can you configure the system to use both CPUs for an ordinary
job, or does that require a special compilation option/re-coding?

In general if you run only a single non-threaded application the performance
is not better than on a SMP system.
In fact your application may run slower, because there is some overhead to
keep the processors in sync (locks).
So SMP works on a thread base.

(c) Will code already compiled for ev56 CPUs run efficiently on an ev6 CPU?

The design is different, so for optimal performance you need to optimize for
EV6.

  ciao - 
    Stefan Traby
    Quant-X Alpha Linux Support

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