From mboxrd@z Thu Jan 1 00:00:00 1970 Message-ID: <3C173B6D.519A9DC1@strakt.com> From: Boyd Roberts MIME-Version: 1.0 To: 9fans@cse.psu.edu Subject: Re: [9fans] RDMA: DMA over TCP/IP at IETF References: <200112102218.IAA08394@hadrian.staff.apnic.net>, <3C15E692.18FA79CB@strakt.com> <3C165ECF.6E0AACCA@null.net> Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit Date: Wed, 12 Dec 2001 12:11:41 +0100 Topicbox-Message-UUID: 339143f2-eaca-11e9-9e20-41e7f4b1d025 "Douglas A. Gwyn" wrote: > My bet would be the KMC11-B; that was a nice hardware hack. Yeah, we had DZ/KMC's. I think I ran into this mess when we [john, piers, me] 'ported' 8th Ed from the common 1127 '750 [comet] to our '780. It was trivial, but there was the odd glitch between the '750 and the '780; some silly compiler issued 16 bit extract field on the UNIBUS T[EU]-16 CSR -- the 780 did not like that. > I don't think there are any inherent problems. We've been > locking disk inodes for eons. I know that. I was referring to locking in general. IIRC the 'Multiprocessor sleep/wakeup' paper refers to a problem which was discovered when a new fast device was added to Plan 9.