Parallel RFSAI-BFGS Preconditioners for Large Symmetric Eigenproblems

Table 2

Default values of parameters.

Number of eigenpairs to compute	𝑛eig=10
Parameters for the outer iteration	𝜏=10^−8, ITMAX =50
Tolerance for the initial eigenvector guess	𝜏DACG=10^−2
Parameters for the PCG iteration	𝜏PCG=10^−2, ITMAXPCG=50