From owner-freebsd-stable@FreeBSD.ORG Wed Jan 18 00:12:59 2012 Return-Path: Delivered-To: freebsd-stable@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id A2553106564A for ; Wed, 18 Jan 2012 00:12:59 +0000 (UTC) (envelope-from cswiger@mac.com) Received: from asmtpout020.mac.com (asmtpout020.mac.com [17.148.16.95]) by mx1.freebsd.org (Postfix) with ESMTP id 86F6F8FC15 for ; Wed, 18 Jan 2012 00:12:59 +0000 (UTC) MIME-version: 1.0 Content-transfer-encoding: 7BIT Content-type: text/plain; CHARSET=US-ASCII Received: from cswiger1.apple.com (unknown [17.209.4.71]) by asmtp020.mac.com (Oracle Communications Messaging Server 7u4-23.01 (7.0.4.23.0) 64bit (built Aug 10 2011)) with ESMTPSA id <0LXY00MT9TSKY620@asmtp020.mac.com> for freebsd-stable@freebsd.org; Tue, 17 Jan 2012 23:12:20 +0000 (GMT) X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10432:5.5.7110,1.0.211,0.0.0000 definitions=2012-01-17_08:2012-01-17, 2012-01-17, 1970-01-01 signatures=0 X-Proofpoint-Spam-Details: rule=notspam policy=default score=0 spamscore=0 ipscore=0 suspectscore=0 phishscore=0 bulkscore=0 adultscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=6.0.2-1012030000 definitions=main-1201170261 From: Chuck Swiger In-reply-to: <20120117220912.GA32330@icarus.home.lan> Date: Tue, 17 Jan 2012 15:12:19 -0800 Message-id: <668E1573-AD44-466A-BE94-AFE138E151CD@mac.com> References: <201201171859.10812.peter@hk.ipsec.se> <20120117220912.GA32330@icarus.home.lan> To: Jeremy Chadwick , peter h X-Mailer: Apple Mail (2.1084) Cc: FreeBSD Stable Subject: Re: about thumper aka sun fire x4500 X-BeenThere: freebsd-stable@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Production branch of FreeBSD source code List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 18 Jan 2012 00:12:59 -0000 On Jan 17, 2012, at 2:09 PM, Jeremy Chadwick wrote: > I do not have one of these boxes / am not familiar with them, but > HyperTransport is an AMD thing. The concept is that it's a bus that > interconnects different pieces of a system to the CPU (and thus the > memory bus). While that was a nice picture, it's not related to the bus architecture of a Sun 4500. :-) An X or E 4500 is a highly fault-tolerant parallel minicomputer with 8 slots-- one was I/O, and you could put up to 7 CPU boards with dual UltraSPARC processors-- you could hot-plug CPU boards and memory in the event of a failure and keep the rest of the system up. They cost a significant fraction of a million dollars circa y2k. A check of some old docs suggests: Hypertransport Sync Flood occurred on last boot: Uncorrectable ECC error caused the last reboot. Regards, -- -Chuck