On 6 November 2013 11:02, Rzepa, Henry S <h.rz...@imperial.ac.uk> wrote:
>
> On 6 Nov 2013, at 08:45, Angel Herráez <angel.herr...@uah.es> wrote:
>
> > Dear all,
> > I fully agree with Henry's considerations. This might be a nontrivial
> > issue for the future of Jmol.
> >
> > On the other hand, I also hope that things may be simpler, as Nico is
> > presenting them.
> > I would not like to give up using the applet!
> >
>
> The pre-eminent reason (IMHO) for continuing to use the applet is its
> speed. We display many surfaces, often with millions of polygons. This
> can take 1-2 minutes to render using JSmol.
>
> I wonder if anyone has developed any standard benchmark tests for the two
> codes? That way, we can track if eg Javascript engines are catching up
> with the compiled Java. Volunteers please!
>
> I am old enough to remember when Xmol (which came before Jmol) was
> considered far far to slow to render proteins. It was Roger Sayle, working
> with David Blow (a protein crystallographer) who overturned the accepted
> wisdom that to display a protein you need an (eye-wateringly expensive)
> Evans and Sutherland hardware solution. Rasmol emerged out of that, and
> if it taught us anything, it was that well written code could in fact
> entirely replace that expensive E&S system. Roger’s tour-de-force was to
> show that EVEN spacefilled proteins could be rotated in real time using
> Rasmol. That was truly astonishing at the time (~ 1995).
>
> So perhaps JSmol could be tuned (along with the JavaScript engine) to do
> the same. But not I fancy for a year or two?
>
JavaScript is pretty much catching up in speed and ubiquity. Many
benchmarks point in this direction
http://benchmarksgame.alioth.debian.org/u64/benchmark.php?test=all&lang=v8&lang2=java&data=u64
Best regards,
Nina
>
>
>
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