Exponential

Exponential ( VSL_METHOD_SEXPONENTIAL_ICDF/ VSL_METHOD_DEXPONENTIAL_ICDF )

FP precision	BRNG	45nm Intel(R) Core(TM)2 Duo processor	Intel(R) Core(TM) i7 processor	Intel(R) Itanium(R) 2 processor
Single	MCG31m1	12.37	10.75	10.96
	R250	12.99	11.46	10.67
	MRG32k3a	27.20	22.45	16.00
	MCG59	9.97	8.55	10.91
	WH	24.76	21.50	24.13
	SOBOL	11.97	8.93	14.00
	NIEDERR	20.86	18.98	15.56
	MT19937	15.31	13.05	18.95
	MT2203	15.05	13.56	20.37
Double	MCG31m1	17.70	16.22	12.13
	R250	19.20	17.68	11.57
	MRG32k3a	33.56	27.85	17.16
	MCG59	16.13	13.66	12.07
	WH	30.02	26.50	25.29
	SOBOL	21.35	19.62	16.22
	NIEDERR	21.23	19.53	17.38
	MT19937	20.64	18.62	19.15
	MT2203	20.29	18.93	20.61

Notes:

The following hardware was used for measurements:
- 45nm Intel(R) Core(TM)2 Duo processor – 2 Quad Core CPUs (256Kb L1 and 12288Kb L2 cache), 2.8GHz, 8GB of RAM
- Intel(R) Core(TM) i7 processor – 1 Quad Core CPU (256Kb L1, 1Mb L2 cache and 8Mb L3 cache), 3.2GHz, 4GB of RAM
- Intel(R) Itanium(R) 2 processor – 4 Dual Core CPUs (64Kb L1, 2560Kb L2, 24Mb L3 cache), 1.6GHz, 8GB of RAM.
Performance is measured over the vector length of 1000 elements.