As you might guess, the jit systems perform better, perhaps by an order of magnitude. If you can read this then it means that you are using a browser that does not support java. The matrix is generated randomly and the right hand side is constructed so the solution has all components equal to one. The method of solution is based on Gaussian elimination with partial pivoting. A floating point operation here is a floating point addition or a floating point multiplication with 64 bit operands.
Norm Res A check is made to show that the computed solution is correct.
If this quantity is much larger than 1, the solution is probably incorrect. Also don't miss his more general Java Optimization page . As of 5 April 96 we are running the optimized code and will maintain separate timings lists until a significant number of timings have been done under the new code. Also, see Ivan Phillips' CaffeineMark benchmark. As of 30 June 2000 the problem size has been increased to 500x500.