[Octave-bug-tracker] [bug #53912] make check hangs system

[Michael Godfrey]

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URL:
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Summary: make check hangs system
Project: GNU Octave
Submitted by: godfrey
Submitted on: Tue 15 May 2018 03:39:49 PM UTC
Category: Test Suite
Severity: 3 - Normal
Priority: 5 - Normal
Item Group: Other
Status: None
Assigned to: None
Originator Name: Godfrey
Originator Email:
Open/Closed: Open
Discussion Lock: Any
Release: dev
Operating System: GNU/Linux

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Details:

As of: HG ID for this build is "b75d55b3dbb7"
running make check gets to:
sparse/gmres.m ............................................../bin/sh: line
1: 14328 Killed

At which point the swapfile starts to grow indefinitely.
If the process is not killed the system locks up and must
be manually rebooted. This happens under Fedora 27 and 28.





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[Dmitri A. Sergatskov]

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Follow-up Comment #1, bug #53912 (project octave):

I confirm.

Dmitri.
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[Dmitri A. Sergatskov]

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Follow-up Comment #2, bug #53912 (project octave):

The problematic test is:



dim = 100;
A = spdiags ([[1./(2:2:2*(dim-1)) 0]; 1./(1:2:2*dim-1);[0
1./(2:2:2*(dim-1))]]', -1:1, dim, dim);
A = A'*A;
b = rand (dim, 1);
[x, flag] = gmres (@(x) A*x, b, dim, 1e-10, 1e6,@(x) x ./ diag (A), [], []);



Dmitri.

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[Mike Miller]

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Update of bug #53912 (project octave):

Severity: 3 - Normal => 5 - Blocker
Status: None => Confirmed

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Follow-up Comment #3:

The change that broke this is 2f3a66d7cf8a
(https://hg.savannah.gnu.org/hgweb/octave/rev/2f3a66d7cf8a).

jwe - another good reason to revert these classdef changes on stable :)

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[John W. Eaton]

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Follow-up Comment #4, bug #53912 (project octave):

OK, I will undo those changes. Who knew that arranging to call a destructor
would be so problematic?


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[Rik]

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Follow-up Comment #5, bug #53912 (project octave):

Separately, I just came across this as well. Just running 'test gmres' gives
a failure for me


octave:2> test gmres
***** test
dim = 100;
A = spdiags ([[1./(2:2:2*(dim-1)) 0]; 1./(1:2:2*dim-1); ...
[0 1./(2:2:2*(dim-1))]]', -1:1, dim, dim);
A = A'*A;
b = rand (dim, 1);
[x, resvec] = gmres (@(x) A*x, b, dim, 1e-10, dim,...
@(x) x./diag (A), [], []);
assert (x, A\b, 1e-9*norm (x, Inf));
[x, flag] = gmres (@(x) A*x, b, dim, 1e-10, 1e6,...
@(x) diag (diag (A)) \ x, [], []);
assert (x, A\b, 1e-9*norm (x, Inf));
[x, flag] = gmres (@(x) A*x, b, dim, 1e-10, 1e6,...
@(x) x ./ diag (A), [], []);
assert (x, A\b, 1e-7*norm (x, Inf));
!!!!! test failed
out of memory or dimension too large for Octave's index type


I used hg bisect to locate the same cset as Mike as the source of the
problem.


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[John W. Eaton]

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Update of bug #53912 (project octave):

Status: Confirmed => Ready For Test

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Follow-up Comment #6:

I undid the handle class destructor changes here:

http://hg.savannah.gnu.org/hgweb/octave/rev/61ba501d8f04

and merged stable with default.

This fix for classdef will just have to wait until it can be done properly on
default.


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[Rik]

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Update of bug #53912 (project octave):

Status: Ready For Test => Fixed
Open/Closed: Open => Closed

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Follow-up Comment #7:

Verified. 'make check' has returned to passing. I'm going to close this
report. The real action has to take place over at bug #53844.

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