Decimal GetEvenNumberRangeStdDev(Decimal [] A)

{

if (A == null) return 0;

Return A.EvenNumberRangeStdDev();

}

Today we continue to discuss the WRL long address trace generation system. We were reviewing the effects of line size in the first and second level cache in this study and the contribution of the write buffer. We summarize the study now. This is a method to generate and analyze very long traces of program execution on RISC machines. The system is designed to allow tracing of multiple user processes and the operating system. Traces can be stored or analyzed on the fly. The latter is preferred because the storage is very large even for a very short duration. Besides it allows the trace to be compacted and written to tape. The system requires that the programs be linked in a special way.
From the trace analysis using this system, it was found that while second level cache was necessary, large second level caches provide little or no benefit. A program which has a large working set can benefit from a large cache. Block size plays a big role in first level instruction cache, but sizes above 128 bytes had little effect on overall performance. If the proportion of writes in the memory references is large, then the contribution from the write buffer is significant. There is little or no benefit from the associativity in large second level cache.

#codingexercise
Decimal GetEvenNumberRangeVariance(Decimal [] A)


{


if (A == null) return 0;


Return A.EvenNumberRangeVariance();


}