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
Created attachment 477253 [details] /proc/cpuinfo for my old single-core, 32-bit AMD
(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.
atlas-sse2-3.8.3-18.fc14.i686
Then you need to remove the atlas-sse2 package and install either atlas, atlas-sse or atlas-3dnow.
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
Reassigning bug to ATLAS. This is not an octave bug.
Ping Deji?
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