[squeak-dev] Re: floats

Nicolas Cellier nicolas.cellier.aka.nice at gmail.com
Mon Mar 16 18:41:35 UTC 2009


Hi Eliot,
AFAIK, VW does not use the nan trick, so it has to perform extra conversions
on SmallDouble, doesn't it?

Nicolas

2009/3/16 Eliot Miranda <eliot.miranda at gmail.com>

>
>
> So the experience with my 64-bit VW implementation was that
>     - typical large symbolic benchmarks (e.g. all senders) were 15% to 20%
> slower in 64-bits than in 32-bits.
>     - immediate double arithmetic is about 3 times faster at about half the
> speed of immediate integer operations
>     - images are about 55% larger when converted from 32-bit to 64-bit
>
>
> Eliot
>
>
>
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