Frank Deutschmann wrote:
>
> Hello all,
>
> Presuming that I can't get a hold of the source code, could someone
> perhaps tell me how the Java3D VecMath package is implemented?
> Specifically, I'm wondering if it makes use of the SIMD floating point
> instructions on P-3 processors, and, more generally, how efficient it
> is/what sort of performance to expect.
>
Java is crossplatform, so, it is highly unlikely that a class package
uses something so intel-specific (if it doesn't use JNI). However, the
JVM *might* be smart enough to do such a thing.
> I'm looking at using Java for a major numerical analysis package, and
> the "write once run anywhere" aspect is naturally quite apealing;
> however, I'm simply unable to give up the traditional huge measure of
> performance that goes with Java -- but the VecMath package seems quite
> redeeming, provided the overhead is minimal. I'm guessing/presuming
> that VecMath is implemented as efficiently as possible for the native
> hardware; do I presume too much? If VecMath itself is implemented
> "close to the hardware", how much penalty does the requisite Jini
> boundary cost?
Not being familiar with the package, I can't say. It is
possible though. FWIW, did you mean the java native interface (JNI)
or Jini (the 'technology')?
-Tom
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