Project

I took the Java version of the Linpack benchmark optimized by Jonathan Hardwick and added further optimization to it.

Basically, some dead code and unused variables have been removed. Final qualifier has been added to some more methods. Removed superfluous operations (like addition of 0) and a non-required type conversion.

Installation

Just download the source code. Compile and run it.

Usage

java Linpack

The output generated by running the application should look like:
Mflops/s: 68.667 Time: 0.01 secs Norm Res: 1.43 Precision: 2.220446049250313E-16

For reference I include some values generated by running the application on various machines:

Machine	Comment	Mflop/s

AMD Athlon 1800+ (ca. 900Mhz), Windows XP	Java 1.5.0 mixed execution	86.667 (max), 34.333 (min)
AMD Athlon 1800+ (ca. 900Mhz), Windows XP	Java 1.5.0 interpreted execution	8.583 (max), 8.477 (min)
Dual AMD Athlon 1200, Linux kernel 2.6.0	Java 1.5.0 mixed execution	42.917 (max), 40.392 (min)
Dual AMD Athlon 1200, Linux kernel 2.6.0	Java 1.5.0 interpreted execution	7.153 (max), 7.079 (min)
AMD Athlon 900, Windows 2000	Java 1.4.2 mixed execution	68.667 (max), 34.333 (min)
AMD Athlon 900, Windows 2000	Java 1.4.2 interpreted execution	5.722 (max), 4.905 (min)

Related Stuff

Download

Source code

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Generated: 2004-06-08T12:46:39+01:00
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