Residual-Based Simpler Block GMRES for Nonsymmetric Linear Systems with Multiple Right-Hand Sides

Table 2

Computational cost of a cycle of RB-SBGMRES-D (Algorithm 4).

Step	Computational cost
Computation of
Computation of
Computation of
Computation of
Block Arnoldi procedure (5.3)
Computation of
QR factorization of
Computation of
Computation of
QR factorization of
Computation of
QR factorization of
Computation of
Computation of
Computation of
Computation of
Computation of