[Beowulf] large array to run

G.M.Sigut sigut at id.ethz.ch
Mon Dec 17 04:36:36 EST 2007


Blast, forgot the subject...

On Sat, 2007-12-15 at 12:01 -0800, beowulf-request at beowulf.org wrote:
...
>    2. Re: large array to run (Geoff Jacobs)
...
> Message: 2
> Date: Fri, 14 Dec 2007 21:46:42 -0600
> From: Geoff Jacobs <gdjacobs at gmail.com>
> Subject: Re: [Beowulf] large array to run
> To: Craig Tierney <ctierney at hypermall.net>
> Cc: beowulf at beowulf.org, Mark Hahn <hahn at mcmaster.ca>
...
> Craig Tierney wrote:
> <snippage />
...
> IIRC, the CDC 6600 (and compatibles) had a 48 bit integer format as
> default. So, yes it does vary. I guess I was rolling the dice a little.

My memory is telling me, that while the arithmetics on the 6000 series
might have been done with 48 bits, the memory assignment was in words.
One integer took one word of 60 bits (i.e. 5 bytes of 12 bits each).

George

-- 
 >>>>>>>>>>>>>>>>>>>>>>>>>>  George M. Sigut  <<<<<<<<<<<<<<<<<<<<<<<<<<
 ETH Zurich,  Informatikdienste, Abteilung Systemdienste, CH-8092 Zurich
 Swiss Federal Inst. of Technology Zurich, IT Services,  System Services
 e-mail: sigut at id.ethz.ch,  Phone:+41 44 632 5763,  Fax: +41 44 632 1022
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