From owner-freebsd-smp Tue Jul 27 16:36:41 1999 Delivered-To: freebsd-smp@freebsd.org Received: from smtp04.primenet.com (smtp04.primenet.com [206.165.6.134]) by hub.freebsd.org (Postfix) with ESMTP id 893FC14F50 for ; Tue, 27 Jul 1999 16:36:37 -0700 (PDT) (envelope-from tlambert@usr01.primenet.com) Received: (from daemon@localhost) by smtp04.primenet.com (8.8.8/8.8.8) id QAA01610; Tue, 27 Jul 1999 16:36:35 -0700 (MST) Received: from usr01.primenet.com(206.165.6.201) via SMTP by smtp04.primenet.com, id smtpd001491; Tue Jul 27 16:36:25 1999 Received: (from tlambert@localhost) by usr01.primenet.com (8.8.5/8.8.5) id QAA02119; Tue, 27 Jul 1999 16:36:03 -0700 (MST) From: Terry Lambert Message-Id: <199907272336.QAA02119@usr01.primenet.com> Subject: Re: SMP kernel on dual board with single proc? To: tom@embt.com (Tom Embt) Date: Tue, 27 Jul 1999 23:36:02 +0000 (GMT) Cc: freebsd-smp@FreeBSD.ORG In-Reply-To: <3.0.3.32.19990727170147.0075e828@mail.embt.com> from "Tom Embt" at Jul 27, 99 05:01:47 pm X-Mailer: ELM [version 2.4 PL25] MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Sender: owner-freebsd-smp@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.org > >Yes, but that's not what he asked. He wanted to know if a SMP kernel worked > >on a SMP motherboard with one CPU, not if a UP kernel works on a 1 cpu SMP > >motherboard. > > Correct, I am asking if it can be done with an _SMP_ kernel, I already run > a regular UP kernel on this board no problem (hence this is not a pressing > issue I was just wondering if it could be done). > > Panic msg from bootup (copied by hand) : > > panic: NO BSP found! If you are using a slot-architecture board, then you need a terminator in the empty slot. In general, "BSP" means "Boot System Processor" and "AP" means "Auxillary Processor" -- in other words, it thinks it can't find the BIOS designated boot processor. You may find that swapping slots fixes the problem (if, as Mike Smith said, you are running a -current that is no more than two weeks old). For standard slot processers (e.g., my dual P90), the BIOS has always given the right information to the BP (including the APIC ID), so it has been rare that it would not run with one processor removed (the last time was the first time somone kicked it up from 2 to 4 processors). > Shall I assume it is not possible to run an SMP kernel on this system w/o > another CPU? 1) How old is the build? 2) Socket 370 = needs terminator, IIRC... Terry Lambert terry@lambert.org --- Any opinions in this posting are my own and not those of my present or previous employers. To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-smp" in the body of the message