> > An HT processor has several different areas of the processor. For
> example,
> > Logic, Integer math, and Floating Point Math all happen in separate areas
> of
> > the chip. The idea is to allow a second process to use an area of the
> chip
> > that the first process is not using. However, S@H is very heavily
> Floating
> > point, so the Floating Point area will be very heavily used, and be the
> > bottleneck for getting work done. If you had two processes, one that was
> all
> > integer, and the other that was all floating point, they would collapse
> > together better.
> > <a>
> href="http://www.boinc.dk/index.php?page=user_statistics&userid=9915">
> >
> >
> This is exactly the same as the Unitied Deviced/GRID system is with their
> cancer/smallpox research. With HT one instance says only 50% is being used
> however all of the Floating Point process is being used. So running two
> wouldnt help in getting any results any faster.
> Has anyone done any HT time testing with boinc to see if theres an increase in
> WU's between running just one instance and running two?
>
The tests have been done and the fraction is 1.3 to 1.4 with seti.

John Keck
BOINCing since 2002/12/08