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Article View: comp.sys.transputer
Article #1821

Link transfer rate, 1.2 MB/s is possible but...

#1821
From: Stephan Wenger
Date: Wed, 12 Jun 1991 12:54
23 lines
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In <16455@ganymede.inmos.co.uk> davidb@brac.inmos.co.uk (David Boreham) writes:
>In article <3589@kraftbus.cs.tu-berlin.de> stewe@opal.cs.tu-berlin.de (Stephan Wenger) writes:
>>
>>With this design we realize about 1.2 MB/s transfer rate between two
>                                   ^^^^^^^^
>>of this adaptors. We have never connected it to a transputer, but i
>>think, that the transputer would not be the bottleneck.
>                                           

>Hmm. This sounds too high. I've never done any detailed measurements
>but simulations predict no more than 1Mbyte/s from any link adaptor 
>under any operating conditions. Are you sure you are measuring the
>correct thing and that ACKs are matching the right data packets ?

This project was realized by some students here at Technical University of
Berlin. They told me now, they used a 12.88 MHz crystal (divided by 2)
as the (nominal 5 MHz) clk for the two c011. This works properly, because
we never wanted (or tried) to connect this link-adaptors to other Inmos
Devices and due to the superb Inmos chips... . I'm sorry about the confusion.

Yours Stephan Wenger
stewe@opal   stewe@tub
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Path: arc1-ca.pugleaf.net!utzoo!utgpu!news-server.csri.toronto.edu!bonnie.concordia.ca!uunet!zaphod.mps.ohio-state.edu!think.com!snorkelwacker.mit.edu!ai-lab!opal!stewe
From: stewe@opal.cs.tu-berlin.de (Stephan Wenger)
Newsgroups: comp.sys.transputer
Subject: Link transfer rate, 1.2 MB/s is possible but...
Summary: use more than 5 MHz clk
Message-ID: <3715@kraftbus.cs.tu-berlin.de>
Date: 12 Jun 91 12:54:50 GMT
Sender: stewe@opal.cs.tu-berlin.de
Followup-To: comp.sys.transputer
Organization: Technical University of Berlin, Germany
Lines: 23