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International Scholarly Research Notices
Table of Contents
International Scholarly Research Notices
/
2013
/
Article
/
Tab 2
/
Research Article
New Preconditioners for Nonsymmetric Saddle Point Systems with Singular
Block
Table 2
Iteration time and iteration numbers of GMRES of preconditioned matrices
and
for different
with nullity
.
ā
300
675
1200
2028
2700
Time
0.3066
14.3040
3449.2035
3000
5000
Iter
10
100
>1000
>1000
>1000
Time
0.0667
0.4282
2.0694
255.0312
1519.8529
Iter
2
3
3
7
17