Re: [Jython-users] jython to java?

[John M. <joh...@ya...>]

Actually, they (I won't mention the company name) ran into a bug and
will try to compile the app after they get their stuff working.

I'm not thrilled about using a Jar-to-'C' compiler.  One of the reason
to switch to Java is to avoid past nightmarish problems with building
platform specific deliverables and actually getting them properly
delivered.  A Jar compiler may solve a problem but, like a lot of
solutions, it creates a problem in the process.  And then there's the
fact that their stuff did not run on the first try...


--- Bill Scherer <Bil...@Ve...> wrote:
> If you have the budget for it, TowerJ can substanially improve your
> performance.  I can provide some more details if you wish.
> 
> John Mudd wrote:
> > 
> > I tried CPython first and I was thrilled to get 2-3 times better
> > performance.  But it doesn't support multi-threading.  (Unless I
> > completely misunderstand which is possible.)  My impression is that
> > CPython threads serially take turns using the interpreter.  That
> was a
> > dead end for me.  That plus the need to use Jython (Java) classlibs
> to
> > access our CORBA orb.  Plus the push in our group for Java.
> > 
> > Convert to C or C++.  My impression is that I can only expect about
> 50%
> > better performance than using Java.  Plus my code now has reached
> the
> > limits of the hardware and so, in that respect, there is no room
> for
> > further improvement.  Although I agree that it would still be
> better to
> > put less stress on the machine that I have to share with many other
> > processes.  A more efficient program would help in that respect
> but...
> > 
> > Recode in C?? The app is tooo complicated.  By design, 'C' doesn't
> > afford implementing such deep abstraction.
> > 
> > C++ was an early attempt to solve this fundamental problem with OOP
> but
> > I consider it the 286 (the predecessor to Intel's 386 processor) of
> OOP
> > languages.  A necessary step but I'm proud to have never coded in
> it
> > the same way I'm proud to have never owned a 286 PC.
> > 
> > IMHO, of course.  A lot of this stuff is over my head and so it's
> easy
> > for me to draw incorrect conclusions.
> > 
> > --- D-Man <ds...@ri...> wrote:
> > > On Thu, Mar 08, 2001 at 09:59:58AM -0800, John Mudd wrote:
> > > | Any thoughts about developing a tool to convert Jython to Java?
> > > Unlike
> > > | jythonc (which is a great tool!), something to ease the job of
> > > porting
> > > | to Java in order to get better performance.
> > >
> > > You are converting to Java for performance?  I haven't heard that
> one
> > > before.  Why not try CPython first?  I have heard that CPython is
> > > ~2-3
> > > times faster than Jython.
> > >
> > > Also, why not convert the Python code to C++ or C if you really
> want
> > > performance?  Well-written C or C++ is lots faster than equally
> > > well-written Java.  (This isn't to say that you can't make poorly
> > > written C that is slower than well written Java)
> > >
> > > -D
> > >
> > >
> > > _______________________________________________
> > > Jython-users mailing list
> > > Jyt...@li...
> > > http://lists.sourceforge.net/lists/listinfo/jython-users
> > 
> > __________________________________________________
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> 
> -- 
> William K. Scherer
> Sr. Member of Applications Staff - Verizon Wireless
> Bill.Scherer_at_VerizonWireless.com


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