Bug 675487

Summary: Wrong flavor of atlas installed on x86
Product: [Fedora] Fedora Reporter: Andrew Ziem <ahz001>
Component: atlasAssignee: Deji Akingunola <dakingun>
Status: CLOSED WONTFIX QA Contact: Fedora Extras Quality Assurance <extras-qa>
Severity: high Docs Contact:
Priority: unspecified    
Version: 14CC: alex, dakingun, mmahut, susi.lehtola
Target Milestone: ---Keywords: Reopened
Target Release: ---   
Hardware: Unspecified   
OS: Linux   
Whiteboard:
Fixed In Version: Doc Type: Bug Fix
Doc Text:
Story Points: ---
Clone Of: Environment:
Last Closed: 2012-08-16 21:25:54 UTC Type: ---
Regression: --- Mount Type: ---
Documentation: --- CRM:
Verified Versions: Category: ---
oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: --- Target Upstream Version:
Attachments:
Description Flags
/proc/cpuinfo for my old single-core, 32-bit AMD none

Description Andrew Ziem 2011-02-05 22:58:38 UTC
Description of problem:
Octave crashes on basic operations.  The cause seems to be BLAS is compiled incorrectly.

Version-Release number of selected component (if applicable):
blas-3.2.2-2.fc14.i686
octave-3.2.4-3.fc14.i686


How reproducible:
50%

Steps to Reproduce:
1. Open octave
2.  A = [3 2 -1 1; 2 -2 4 -2; -1 5 -1 0]
3. rref(A)
  
Actual results:
panic: Illegal instruction -- stopping myself...
attempting to save variables to `octave-core'...
save to `octave-core' complete
Illegal instruction (core dumped)


Expected results:
reduce echelon form without crash

Additional info:
This post describes the same problem and cause is identified as BLAS incorrectly compiled to not support SSE level of machine, so I will attach my /proc/cpuinfo

http://octave.1599824.n4.nabble.com/Help-plaese-panic-Illegal-instruction-td2122590.html

Comment 1 Andrew Ziem 2011-02-05 22:59:23 UTC
Created attachment 477253 [details]
/proc/cpuinfo for my old single-core, 32-bit AMD

Comment 2 Susi Lehtola 2011-02-06 07:33:31 UTC
(In reply to comment #0)
> Additional info:
> This post describes the same problem and cause is identified as BLAS
> incorrectly compiled to not support SSE level of machine, so I will attach my
> /proc/cpuinfo
> 
> http://octave.1599824.n4.nabble.com/Help-plaese-panic-Illegal-instruction-td2122590.html

The solution at the above page is:

"Please file a bug against atlas in Debian. Include the output of 
        cat /proc/cpuinfo 
The base package should run regardless of the SSE level of your machine."

Please paste the output of
$ rpm -qa atlas\*
to see which version of ATLAS you have installed.

Comment 3 Andrew Ziem 2011-02-06 14:31:51 UTC
atlas-sse2-3.8.3-18.fc14.i686

Comment 4 Susi Lehtola 2011-02-06 14:56:55 UTC
Then you need to remove the atlas-sse2 package and install either atlas, atlas-sse or atlas-3dnow.

Comment 5 Andrew Ziem 2011-02-06 17:34:09 UTC
That is a workaround, but it's confusing for many people to find out there is another package that does the same thing, force removing a package (despite dependencies) using relatively obscure CLI options, etc.

Solutions would look like one of these
1. Install atlas by default instead of atlas-sse2
2. Print a warning at runtime when the wrong CPU is detected
3. Have YUM figure out the right dependency
4. Remove atlas-sse2 from the repo

Comment 6 Susi Lehtola 2011-02-06 19:34:23 UTC
Reassigning bug to ATLAS. This is not an octave bug.

Comment 7 Susi Lehtola 2011-12-16 10:29:31 UTC
Ping Deji?

Comment 8 Fedora End Of Life 2012-08-16 21:25:57 UTC
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