1. No category

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−3
10
−4
10
−5
10
−6
10
−7
10
−8
10
0
50
100
150
# GMRES(30) iterations
200
250
±iI…yv;>9tF S :Q`nA
?v=Hw‰F39ty“FK=O]Fnp>IJr<Gt?v9<z2wŠCa9<zHI_=@y\G<p@F*ZcI_{*F3=@r<IJ?Š=?v‹
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200
m=10
m=20
m=30
m=40
m=50
full
600
m=10
m=20
m=30
m=40
full
180
160
500
140
120
# iterations
# iterations
400
300
100
80
200
60
40
100
20
0
0
1
2
§C@K), 6 % 6 Ï L 3
4
5
6
7
dimension of the low rank correction
8
9
10
11
0
0
1
2
Ž› K), % 6 Ï X 3
4
5
6
7
dimension of the low rank correction
8
9
10
11
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Example 3 − Size = 1701 − IRAM tolerance = 0.1
300
GMRES Toler = 1.0e−8
"
= 1.0e−5
Number of iterations of GMRES(10)
250
200
150
100
50
0
2
4
6
8
10
12
Size of the coarse space
14
16
18
20
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Example 3 − Size = 1701 − IRAM tolerance = 0.1
100
SQMR Toler = 1.0e−8
"
= 1.0e−5
90
Number of iterations of SQMR
80
70
60
50
40
30
0
2
4
6
8
10
12
Size of the coarse space
14
16
18
20
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