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[Octave-bug-tracker] [bug #53258] test pcg.m fail
From: |
Dmitri A. Sergatskov |
Subject: |
[Octave-bug-tracker] [bug #53258] test pcg.m fail |
Date: |
Fri, 2 Mar 2018 11:51:34 -0500 (EST) |
User-agent: |
Mozilla/5.0 (X11; Fedora; Linux x86_64; rv:58.0) Gecko/20100101 Firefox/58.0 |
Follow-up Comment #1, bug #53258 (project octave):
I usually get few failures if I repeat test 1000 times.
This is one of the failed cases:
b = [
0.12278472
0.10887554
0.37156328
0.05834160
0.52981297
0.68811238
0.00012278
0.05733196
0.78572195
0.06894106
];
N = 10;
A = diag ([1:N]);
X = A \ b; # X is the true solution
[x, flag] = pcg (A, b, [], N+1);
norm (x - X) / norm (X)
# ans = 0.00000057028
This is with OpenBLAS.
Dmitri.
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- [Octave-bug-tracker] [bug #53258] test pcg.m fail, Dmitri A. Sergatskov, 2018/03/01
- [Octave-bug-tracker] [bug #53258] test pcg.m fail,
Dmitri A. Sergatskov <=
- [Octave-bug-tracker] [bug #53258] test pcg.m fail, Rik, 2018/03/06
- [Octave-bug-tracker] [bug #53258] test pcg.m fail, Rik, 2018/03/07
- [Octave-bug-tracker] [bug #53258] test pcg.m fail, Rik, 2018/03/07
- [Octave-bug-tracker] [bug #53258] test pcg.m fail, Dmitri A. Sergatskov, 2018/03/07
- [Octave-bug-tracker] [bug #53258] test pcg.m fail, Dmitri A. Sergatskov, 2018/03/07
- [Octave-bug-tracker] [bug #53258] test pcg.m fail, Rik, 2018/03/08
- [Octave-bug-tracker] [bug #53258] test pcg.m fail, Carlo de Falco, 2018/03/08
- [Octave-bug-tracker] [bug #53258] test pcg.m fail, Carlo de Falco, 2018/03/08
- [Octave-bug-tracker] [bug #53258] test pcg.m fail, Cristiano Dorigo, 2018/03/08
- [Octave-bug-tracker] [bug #53258] test pcg.m fail, Rik, 2018/03/08