Re: [computer-go] Pattern Matcher

[Vincent Diepeveen <diep@xxxxxxxxx>]

Just like C++ of course JAVA is a programming language which practically is
doing the 100% exact things.

It's not harder to code in JAVA than in C/C++.

However it's 3 times slower simply.

The proof for that has been given so many times already that i am not going
to repeat it. Just to a bet with Omid David Tabibi

some c# guy also did.

Omid produced 20 small programs.

c# lost all bets.

same for java.

the amazing thing is a factor 3 in speed for even simple code.
that really was shocking bad to me.

At 22:27 8-11-2004 +0000, Stuart Yeates wrote:
>Vincent Diepeveen wrote:
>
>> JAVA is great for connectivity and a quick programming of internet tools
>> and for server tools and interfaces.
>
>It can be, but it's certainly not perfect.
>
>> But for the pure speed, i must refer this inferior compiler technology to
>> the outdated desk.
>
>This seriously makes me wonder which compilers you have been using.
>
>> A complex program will be a factor 3 slower with it at least.
>
>Let's assume[1] that java is 3 times slower than c/c++ at run time, but 
>3 times faster at getting an idea form pure idea to running code that 
>can be evaluated.
>
>I'll take java any day.
>
>When I finally run out of ideas to code, maybe I'll port to c++, or 
>maybe i'll run it through gcj (http://gcc.gnu.org/java/) which now 
>supports the full java 1.1 and happily builds native binaries for any 
>platforms supported by gcc. Or maybe, by then the java compilers will be 
>as mature as the c/c++ compilers are today and the speed difference 
>won't be significant.
>
>> In fact small 30 line programs already are to my amazement not seldom up to
>> a factor 3 slower.
>
>Certainly, and most of that is JVM initialisation, a one-off hit. 
>Running in Ant or similar makes things orders of magnitude quicker (you 
>get the overhead of initialising a new thread within the current JVM not 
>that of initialising new process and initialising a new JVM).
>
>cheers
>stuart
>
>[1] Which it isn't in my experience.
>-- 
>Stuart Yeates            stuart.yeates@xxxxxxxxxxxxxxxxx
>OSS Watch                                  http://www.oss-watch.ac.uk/
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