archive: Re: SETI@home and processing time

Re: SETI@home and processing time

David Woolley ( )
Tue, 18 May 1999 08:39:39 +0100 (BST)

> I'll drop my 2 cents worth on the SETI@Home software and then quietly slip
> out the back door. By far one of the most inefficient processes I've ever
> had the pleasure to run a profile trace against. The graphics are

Is the inefficiency in terms of the graphics and windows message loop code,
or in the numerical stuff itself. (Personally I question the need for
floating point for most of it and suspect it is all written in high
level languages.)

> beautiful but the processing time required to reduce just 200K of data are
> excessive. Not bad for a first cut, only time will tell.

Don't forget that the data is being solved for a large number chirp rates
and that the input data is only two bits each of I and Q, so this represents
400K time samples.