On Wed, Mar 18, 2009 at 4:20 PM, bix...@gmail.com <bix...@gmail.com> wrote:
>
> Hi,
>
> After using version 3 for over a year, it finally occured to me I
> should upgrade. When trying to start version 3.4 I get:
>
> ----------------------------------------------------------------------
> | Sage Version 3.4, Release Date: 2009-03-11                         |
> | Type notebook() for the GUI, and license() for information.        |
> ----------------------------------------------------------------------
>
> **********************************************************************
> WARNING!  This Sage install was built on a machine that supports
> instructions that are not available on this computer.  Sage will
> likely fail with ILLEGAL INSTRUCTION errors! The following processor
> flags were on the build machine but are not on this computer:
>
> sse4_1
>
> Email http://groups.google.com/group/sage-support for help.
> To remove this warning and make Sage start, just delete
>     /home/bixbyr/Desktop/sage-3.4-linux-Ubuntu_8.10-i686-Linux/local/
> lib/sage-flags.txt
> **********************************************************************
>
> I tried removing this file to see if sage will run correctly, it
> doesn't seem to. For a quick stress test I did
> sage: prime_pi(10^10)   ... and got back
> /home/bixbyr/Desktop/sage-3.4-linux-Ubuntu_8.10-i686-Linux/local/bin/
> sage-sage: line 197:  8689 Segmentation fault      sage-ipython "$@" -
> i
>
> It returns correctly for prime_pi(10^9), so although it's possible
> that the two errors are unrelated, that seems a strange way to fail if
> the issue were related to insufficient memory.
>
> I downloaded sage-3.4-linux-Ubuntu_8.10-i686-Linux.tar.gz from the
> University of Washington mirror. I'm running ubuntu 8.10, kernel
> version 2.6.27-11-generic. I have 4gb of ram, though running a 32 bit
> kernel effectively limits me to ~3.2 gb. Since sse4 is a cpu
> instruction set (from what I understand), here it the output for cat /
> proc/cpuinfo:
>
> processor       : 0
> vendor_id       : GenuineIntel
> cpu family      : 6
> model           : 15
> model name      : Intel(R) Core(TM)2 Quad CPU    Q6600  @ 2.40GHz
> stepping        : 11
> cpu MHz         : 1600.000
> cache size      : 4096 KB
> physical id     : 0
> siblings        : 4
> core id         : 0
> cpu cores       : 4
> apicid          : 0
> initial apicid  : 0
> fdiv_bug        : no
> hlt_bug         : no
> f00f_bug        : no
> coma_bug        : no
> fpu             : yes
> fpu_exception   : yes
> cpuid level     : 10
> wp              : yes
> flags           : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca 
> cmov
> pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe nx lm
> constant_tsc arch_perfmon pebs bts pni monitor ds_cpl vmx est tm2
> ssse3 cx16 xtpr lahf_lm
> bogomips        : 4799.97
> clflush size    : 64
> power management:
> ( ... it then lists 3 more processors with the same information)
>
> Although not the newest processor, it seems like this should be recent
> enough to run sage. I also tried installing the new version on my
> laptop, another ubuntu 8.10 system this time with a core 2 duo
> processor, and got the exact same error.
>
> Any thoughts? Thanks a lot,

Have you tried to build Sage from sources? If you also get the same
error, it will mean this is not an error related to your cpu
instruction set.


-- 
Johan

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