unpackaged transputers available?

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2 total messages Started by George Lu Thu, 21 Jan 1993 19:23

#1888

Author: George Lu
Date: Thu, 21 Jan 1993 19:23

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Greetings, I have some questions that I hope you can answer. 

1) Is there any previous or ongoing transputer systems that uses the
   hypercube type interconnection? For a 16-node system, each transputer
   would have to use all 4 channels for communication. Is there a way to
   multiplex the channels to handle more transputer-to-transputer 
   interconnections?

2) Is it possible to obtain unpackaged transputers? Yeah, I mean a silvery
   die like 1cm x 1cm in area ebfore they put it in those black cases with
   pins. I'd like to use it in a research prototype.  There are times when
   those packages are just too big.

Thanks in advance for any helpful pointers. Either post or mail is fine.

George Lu
lu@ece.ucsd.edu
George Lu						UCSD ECE dept 0407
lu@ece.ucsd.edu						La Jolla, CA 92093
UCSD Optical Information Processing Group		(619)534-1743

Re: unpackaged transputers available?

#1895

Author: Rob Kurver
Date: Fri, 22 Jan 1993 13:50

37 lines
1954 bytes

In <2436@deadmin.ucsd.edu> lu@topcad.ucsd.edu (George Lu) writes:

>1) Is there any previous or ongoing transputer systems that uses the
>   hypercube type interconnection? For a 16-node system, each transputer
>   would have to use all 4 channels for communication. Is there a way to
>   multiplex the channels to handle more transputer-to-transputer 
>   interconnections?

If you need more than 4 links per node in your hypercube, you can use
more than a single transputer per node.  E.g., two transputers connected
by one link have 6 links free, so allow for a 64 node hypercube consisting
of 128 transputers.

The 93.1 release of our PACT Parallel C compiler features virtual
channels, removing the logical restriction of 4 outgoing (and incoming)
channels per processor.  With virtual channels, arbitrary logical networks
can be implemented on arbitrary hardware, with multiplexer and router
processes automatically inserted where necessary to allow any task to
connect to any other task in the entire system.  The upcoming T9000
provides hardware support for this, of course.

>Thanks in advance for any helpful pointers. Either post or mail is fine.

Hope this helps.  Feel free to email me if you have additional questions
or comments.

>George Lu

Best,

Rob

--
     PACT                   Rob Kurver
    Foulkeslaan 87         rob@pact.nl
   2625 RB Delft     ph: +31 15 616864 
  The Netherlands   fax: +31 15 610032

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