bugGNU Octave - Bugs: bug #38688, Crash when inversing and finding...

 
 

bug #38688: Crash when inversing and finding determinant of a matrix

Submitted by:  Alfian Rizqy T <alfnheim>
Submitted on:  Tue 09 Apr 2013 07:35:28 AM UTC  
 
Category: NoneSeverity: 3 - Normal
Priority: 5 - NormalItem Group: Segfault, Bus Error, etc.
Status: DuplicateAssigned to: None
Originator Name: Alfian Rizqy TOpen/Closed: Closed
Release: 3.6.2Operating System: Microsoft Windows

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Thu 11 Apr 2013 01:39:48 PM UTC, comment #4:

Same problem with the BLAS... duplicate of #35769

Jordi GutiƩrrez Hermoso <jordigh>
Project Administrator
Thu 11 Apr 2013 02:27:09 AM UTC, comment #3:

changing octave version to 3.6.4 gcc 4.6.2 and it works
thanks

Alfian Rizqy T <alfnheim>
Wed 10 Apr 2013 01:51:18 AM UTC, comment #2:

Octave was configured for i686-pc-mingw32

I am using ACER netbook with 1.0 GHz dual core, 1 GB RAM, OS Windows XP SP3 32bit

Alfian Rizqy T <alfnheim>
Tue 09 Apr 2013 07:09:36 PM UTC, comment #1:

Do you use the 3.6.2_gcc4.6.2 MinGW version? If so, what CPU type does your PC have?

If so, you might have hit the notorious libblas bug; see these other bug reports: #35769, #37231, #35933 on how to deal with it.

Waiting for your answer.

Philip Nienhuis <philipnienhuis>
Project Member
Tue 09 Apr 2013 07:35:28 AM UTC, original submission:

I was working for my program, the program is using kernel ridge regression, so I compute matrix K as kernel matrix the add it with cI, resulting matrix BRACKETS

BRACKETS=K+cI

(I=identity matrix and c>0)

when I try to inversing the BRACKETS, my OCTAVE 3.6.2 crashed, it said illegal operation or something, I use command inv(BRACKETS)

when I try at MATLAB, it works fine, so it's disturbing me now because it's part of my final graduation project.

please help me, thank you very much

ps: pardon for my bad English and I'm sorry if this topic maybe had been solved before (didn't find the same thing like me in bug tracker)

Alfian Rizqy T <alfnheim>

 

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Attach File(s):
   
   
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Attached Files
file #27823:  BRACKETS added by alfnheim (121KiB - application/octet-stream - this is the brackets matrix, it's in ASCII format)

 

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   bug dependencies.

Items that depend on this one: None found

 

Carbon-Copy List
  • -unavailable- added by jordigh (Posted a comment)
  • -unavailable- added by alfnheim (Submitted the item)
  • -unavailable- added by alfnheim
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    Follow 6 latest changes.

    Date Changed By Updated Field Previous Value => Replaced By
    Thu 11 Apr 2013 01:41:22 PM UTCjordighOpen/ClosedOpen=>Closed
    Thu 11 Apr 2013 01:41:02 PM UTCjordighDependencies-=>Depends on bugs #35769
    Thu 11 Apr 2013 01:39:48 PM UTCjordighStatusNeed Info=>Duplicate
    Tue 09 Apr 2013 07:09:36 PM UTCphilipnienhuisStatusNone=>Need Info
    Tue 09 Apr 2013 07:35:29 AM UTCalfnheimAttached File-=>Added BRACKETS, #27823
      Carbon-Copy-=>Added -unavailable-

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