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Table 1 Summary of algorithmic cost per iteration step

From: Fast permutation preconditioning for fractional diffusion equations

Method

Dot product

AXPY

MVP

BiCG

2

5

1+1

BiCR

2

6

1+1

BiCGT

2

3

1

BiCRT

2

4

1

CGNR

2

3

2

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