Re: [Jython-users] jython to java?

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

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
> 
> 
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> Jython-users mailing list
> Jyt...@li...
> http://lists.sourceforge.net/lists/listinfo/jython-users


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