Parallel Rayleigh Quotient Optimization with FSAI-Based Preconditioning

Table 1

Size, number of nonzeros, and three representative eigenvalues of the test matrices.

	Size	Nonzeros	𝜆1	𝜆10	𝜆𝑁
FAULT-639	638,802	28,614,564	6.99⋅10^6	1.73⋅10^7	2.52⋅10^16
PO-878	878,355	38,847,915	1.46⋅10^6	4.45⋅10^6	5.42⋅10^15
GEO-1438	1,437,960	63,156,690	7.81⋅10^5	1.32⋅10^6	1.11⋅10^13
CUBE-6091	6,091,008	270,800,586	1.82⋅10^1	3.84⋅10^2	1.05⋅10^07