PVR%bgerug51.earn@NSS.CS.UCL.AC.UK (Patrick Van Renterghem / Transputer Lab) (02/28/89)
Hi, Long time ago, there was a discussion here about lowering the clock frequency (to 500 kHz e.g.) for minimizing the power consumption. Who remembers anything of that ? More precisely, I would like to know if it is possible (I think it is, playing around with DisablePLL and your own ClockIn) and if someone has tried it. With T800's of course. Thanks in advance, ***************************************************************************** * Patrick Van Renterghem, BITNET: pvr@bgerug51.bitnet * * R&D Assistant, EDU: pvr%bgerug51.bitnet@cunyvm.cuny.edu * * State University of Ghent UUCP: mcvax!bgerug51.bitnet!pvr * * Belgium JANET: PVR%earn.bgerug51@earn-relay * * * * Automatic Control Lab/The Transputer Lab, Tel: +32 91 22 57 55 ext. 313 * * State University of Ghent, Fax: +32 91 22 85 91 * * Grotesteenweg Noord 2, * * B-9710 Ghent-Zwijnaarde, Belgium * *****************************************************************************
handy@inmos.co.uk (Andy Hamilton) (03/08/89)
In article <8902281135.AA05126@uk.ac.ox.prg> PVR%bgerug51.earn@NSS.CS.UCL.AC.UK (Patrick Van Renterghem / Transputer Lab) writes: >Long time ago, there was a discussion here about lowering the clock frequency >(to 500 kHz e.g.) for minimizing the power consumption. Who remembers anything >of that ? More precisely, I would like to know if it is possible (I think it is, >playing around with DisablePLL and your own ClockIn) and if someone has tried >it. With T800's of course. Yes, this has been done. Smith Associates (address below) developed a fault-tolerant demonstrator system for SPACE applications (European Space Research and Technology Centre (ESTEC) contract 6946/86/NL/PP(SC)). The demonstrator ran some image compression stuff and mission-critical satellite orientation control. As a result of this demonstrator, ESTEC is now developing a system to be launched on a future University satellite (perhaps UOSAT3). In this design, the clock speeds of the transputers are reduced to conserve power (less than half-a-wot per transputer module), and the system keeps going. Brilliant. For further information on this, you could contact Richard Armstrong, Smith Associates Ltd, Surrey Research Park, Guildford, Surrey GU2 5YP, ENGLAND. Tel (0483) 505565. Unfortunately, I don't have an email-id for this. Hope this is useful. Cheers, Andy Hamilton. ======================>>>> Central Applications <<<<======================= INMOS Limited, 1000 Aztec West, Almondsbury, Bristol, BS12 4SQ. Email1: handy@inmos.co.uk Email2 : apps@inmos.co.uk Tel : +44 0454 616616 Ext 527/8 FAX : +44 0454 617910 Telex 444723