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[Octave-bug-tracker] [bug #37231] Both plot and hist are crashing

From: Philip Nienhuis
Subject: [Octave-bug-tracker] [bug #37231] Both plot and hist are crashing
Date: Fri, 31 Aug 2012 22:16:20 +0000
User-agent: Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv: Gecko/20100701 SeaMonkey/2.0.6

Follow-up Comment #2, bug #37231 (project octave):

(Sorry my memory was a bit hazy) 
ARM CPU you wrote? It occurred to me that your problem probably refers to an
issue related to libblas.dll that hasn't popped up for quite a while. See
e.g., bug #35769. 
The symptoms are on the one hand unpredictable (i.e., where and when), OTOH
usually lead to a segfault.

In short, you'll have to experiment with the various libblas.dll versions in
your <OCTAVE_INSTALL_DIR>/bin subdir (see below), copying and then renaming
them one by one to libblas.dll until you find one which is stable.
This *is* outlined in the README with the Octave-3.6.2_gcc4.6.2 binary. Did
you care to read that?

I used "demo plotyy" for a fairly reliable crash test; Tatsuro advised
something like (IIRC):
a = randn (30, 100) + randn (30, 100) * i;
b = a * a;

FYI, in my <Octave-3.6.2_gcc4.6.2>/bin subdir I have:

C:\Programs\Octave\Octave3.6.2_gcc4.6.2\bin>dir libblas.dll.*
25-Mar-12  15:28        18 631 919 libblas.dll
25-Jan-12  23:12         3 512 832 libblas.dll.atlas-3.8.4_corei5
31-Jan-12  02:07         4 045 312 libblas.dll.atlas-3.8.4_ht-pentium
26-Mar-12  17:46         8 076 039
26-Mar-12  15:44         8 068 871
25-Mar-12  15:28        18 631 919
26-Mar-12  10:20        18 623 215
26-Mar-12  14:03         7 994 571
26-Mar-12  12:32         7 987 403

libblas.dll.ref is the reference BLAS which /should/ work on most, if not all,
architectures - but it is also the slowest.


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