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Sage 5.0 plot issue

asked 2012-05-17 14:56:50 +0200

calc314 gravatar image

updated 2015-01-13 20:46:10 +0200

FrédéricC gravatar image

Okay, so I've rebooted my Mac in 64 bit mode and am running Sage 5.0. When I do a plot3d and specify an opacity, I get the following error:

Unhandled SIGILL: An illegal instruction occurred in Sage.
This probably occurred because a *compiled* component of Sage has a bug
in it and is not properly wrapped with sig_on(), sig_off(). You might
want to run Sage under gdb with 'sage -gdb' to debug this.
Sage will now terminate.

I also get this on one simple interact that runs in the single cell server at, which I assume is running Sage 5.0. Other interacts seem to run okay for me. The interact is:

def test(a=slider(0,10,0.1,2),b=slider(-6,6,.1,0),c=slider(-3,3,1,1),d=slider(-4,4,1,0)):
   print 'Plot y = '+str(c)+'sin('+str(a)+'x + '+str(b)+') + '+str(d)

I'm guessing that I don't have something set up right for Sage 5.0 to run correctly. Any ideas?

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answered 2012-05-17 15:20:15 +0200

kcrisman gravatar image

Do you have a middle-aged Mac? (Say, a Core Duo?)


sage: int(2.4)

and if it crashes, you have the problem described at Trac 12954.

Building from scratch will make things fine, otherwise you may want to revert to 4.8 for now. Sadly.

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That was it. Too bad. Thanks!

calc314 gravatar imagecalc314 ( 2012-05-17 15:34:39 +0200 )edit

answered 2012-12-06 10:57:23 +0200

stecher gravatar image

I'm having the exact same problem with Sage 5.4.1 on a Core 2 Duo Mac running OSX 10.7.5. Trac 12954 suggests the problem is fixed. Is this a new problem then? (The error output is the same as given above...)

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It sounds like it might be a new problem. Did you build Sage from source, or did you download the binary?

Jason Grout gravatar imageJason Grout ( 2012-12-06 11:49:08 +0200 )edit

I downloaded the binary ( Would it help if I tried to build it? Would I need anything other than Xcode for that?

stecher gravatar imagestecher ( 2012-12-06 12:24:39 +0200 )edit

Probably the problem is that you have a Core 2 Duo that is not 100% 64-bit; this has been a common issue lately with binaries. Xcode should be enough, or you might do well with a 10.6 binary. We're working on fixing this problem.

kcrisman gravatar imagekcrisman ( 2012-12-06 21:23:34 +0200 )edit

Thanks for that. The 64-bit 10.6 binary seems to work.

stecher gravatar imagestecher ( 2012-12-07 06:14:31 +0200 )edit

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Asked: 2012-05-17 14:56:50 +0200

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Last updated: Dec 06 '12