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Article View: comp.sys.sgi.misc
Article #267

DMA transfers between machines

#267
From: Ralf Beyer DLR
Date: Mon, 25 Jan 1993 13:58
26 lines
1253 bytes
Hi,

we would like to DMA transfer data from a SGI machine to another
machine (DEC LSI11). Both machines are connected by Ethernet and
have Ethernet controllers.

On the LSI11 there is no room for the overhead required by TCP/IP
or UDP. The LSI11 initiates a DMA request (memory address, block
size etc.) and expects the SGI machine to listen and to respond
with a DMA transfer.

QUESTION: What is to do or how must the SGI machine be configured
	  to be able to receive the DMA request via the Ethernet
	  and then in turn make the DMA transfer ?

Any hint would be very much appreciated.

Ralf Beyer

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Ralf Beyer
German Aerospace Research Establishment (DLR), Institute for Flight
Guidance, Flughafen, D-3300 Braunschweig, Fed. Rep. of Germany
Internet: beyer@bflsgu.fl.bs.dlr.de (EARN/BITNET: fl17@dlrvmbs.bitnet) 
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Path: arc1-ca.pugleaf.net!sparky!uunet!psinntp!cmcl2!adm!news
From: beyer@bflsgu.fl.bs.dlr.de (Ralf Beyer DLR)
Newsgroups: comp.sys.sgi.misc
Subject: DMA transfers between machines
Message-ID: <35205@adm.brl.mil>
Date: 25 Jan 93 13:58:17 GMT
Sender: news@adm.brl.mil
Lines: 27