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

Table 1

Computational cost of a cycle of RB-SBGMRES (or SBGMRES).

Step	Computational cost
Computation of
Computation of
Block Arnoldi procedure (2.1)-(2.2)
QR factorization of
Computation of
Computation of
Computation of