som ranting near the end but do not compile shipping code with jikes.
Also do not make IBM slow jikes down for shipping code : )
Michael Sinz wrote:
> On Tue, 19 Oct 1999 00:03:18 +0200, Ian Corner wrote:
>
> >You mentioned in a previous email the ibmjdk, is that Jikes? If not what is
> >Jikes as I thought that was the IBM JVM. Do you happen to know what Java
> >version Jikes is comparable to?
>
> Jikes is the IBM Research Java Compiler. It is *very* fast at compiling
> Java Source Code into Java Byte Code. It also is very strict to the
> Java Specification (or as strict as possible since the spec is not 100%)
Also it produces the slowest bytecode on the planet. Great for development.
And keep it that way. FAST.
But it would be nice if someone besides Sun produced a killer but slow super
optimizer compiler that was 100% java.
Let it run all night who cares.
>
>
> The IBM JVM (Java Virtual Machine) is a JVM just like the Blackdown port
> of the JDK is a JVM. The IBM one is available at the alphaworks web
> site from IBM.
>
> The IBM JVM is one of the fastest out there (if not the fastest) and
> it has some rather nice technologies such as the better GC and a very
> good JIT.
Very very cool how is IBM on moving to and Open Source Model for there VM's
In the long run JVM technology will change in step with hardware so the long
term IP of
JVM is practically nil. Fast java ---> fast java silicon.
How man people are want for the next version of a particular C compiler ??
Or Objective-C /C++/Smalltalk run time ?
A cool thing is the average differences between java technologies is getting
much much better.
Most are running the same order of magnitude which is very good 2X not 50X
slower.
Sun tends to forget about the critical importance of consistent performance
for WORA.
Good fast predictable performance of java on all platforms beats MS. Sun in
particular has no clue.
IBM does but there not open. If java runs the same and fast every where who
needs MS ?
This its jit vs no it.
4 years from now nobody will give a *** about jvm's just hardware support.
The class libraries are a different story.... They can be optimized forever
since its a design issue.
Mike
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