Luiz,

there are no problems installing IB, but you will see that
running IB on a dual processor machine will be slower than
on a single proc machine.

Frank Ingermann has explained this problem (and also the solution)
very clearly in the IBObjects mailing list.

So I just quote him ;-)

"in short terms: you start IB under NT with 2 CPUs. IB runs on CPU 1. You
make
some select, IB's CPU usage pops up to 100% (for some time). NT's "smart"
multi-cpu-handler sees: "hey, there's one cpu on a 100%, the other at 5%.
We'll
go and put IB on the second CPU to balance the load!" (not knowing that IB
will
always definitely make use of only *one* cpu). said & done.

Some millisecs later: NT: "Hey, cpu 2 is overloaded! let's switch back to
cpu 1!" (... you can guess the rest: NT is practically locked because it is
spending all of its time moving IB from one cpu to the other & back again...
and IB itself doesn't even get the few machine cycles to complete its
job...)

however, there is a cure for this: take IBAffinity (by Karsten Strobel) from
either www.ait-augsburg.de or ibobjects.com. This little tool modifies the
"affinity mask" of the IBServer process in such a way that IB will be
*bound*
to one cpu, preventing NT from doing it's "cpu juggling".

the good news is that with this fix applied, IB will indeed perform better
on a dual-cpu machine, because NT can do all it's internal stuff on the
first
while IB exclusively uses the second. Moreover, should the IB process ever
crash completely, NT will still be available to shoot it down & restart it."


HTH,

Christian

> -----Original Message-----
> From: Luiz Alves [mailto:cprmlao@...]
> Sent: Wednesday, April 18, 2001 12:24 AM
> To: ib-support@yahoogroups.com
> Subject: [ib-support] Machines with mult-processors
>
>
> I have a machine with win 2000 server with two processors.
> I had read about problems with multi-processors machines and NT.
> Is there some problem installing ibserver in win 2000 in a
> machine with
> multi-processors?
>
> Thanks in advance,
>
> Luiz.