Date: Thu, 30 Mar 2000 09:27:12 -0700 From: Steve Passe <smp@csn.net> To: "O. Hartmann" <ohartman@ipamzlx.physik.uni-mainz.de> Cc: freebsd-smp@FreeBSD.ORG Subject: Re: SMP problems with ALR Q-SMP Message-ID: <200003301627.JAA14511@Ilsa.StevesCafe.com> In-Reply-To: Your message of "Thu, 30 Mar 2000 15:09:12 %2B0200." <Pine.BSF.4.10.10003301458020.14969-100000@ipamzlx.physik.uni-mainz.de>
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Hi, > Dear Sirs. > I posted weeks ago about problems with a Siemens Nixdorf PCE-5Smp ... > So, reading the hardware manual says, that each CPU board comes with its > own APIC. But as I understand this, it is only necessary to use one APIC > to get the system running. I never tried NAPIC=3 because I should increase > NINTR=XX upd to another value higher than 24, shouldn't I? Has anyone > any suggestions? Is someone out here who has already configured an running > an ALR Revolution Q-SMP under FreeBSD 4.0-STABLE? Ir would be nice if we can > obtain some hints an tips ... NAPIC refers to the # of IO APICs, while each CPU has an onchip LOCAL APIC. All the APICs hook together to send messages back & forth to manage the INTs. The statement "that each CPU board comes with" probably refers to the LOCAL APIC on the cpu, not an extra IO APIC for each "cpu board" (if indeed there are individual boards for each cpu). These onchip APICs are automatically accounted for and do not need to be added to the NAPIC count. In any case, you could increase NAPIC to 3, as it just reserves static space in the kernel (unless somethings changed since I last looked) and will just be left unused when the mptable probe finds none. As to your problems booting this machine, I'm afraid I have no insight to offer.. -- Steve Passe | powered by smp@csn.net | Symmetric MultiProcessor FreeBSD To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-smp" in the body of the message
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