On Dec 8, 4:35 am, bourbabis <[EMAIL PROTECTED]> wrote:
> Hello.
Hi bourbabis,
> OK, you're probably right, it's a hardware problem.
To elaborate on the remarks by William: compiling ATLAS is some of the
most demanding things you can do to a CPU since most of it has next to
no IO and it attempts to minimize cache misses. Most computational
code has plenty of cache misses which mean that the CPU is not being
driven as hard as ATLAS does. For example ATLAS's dgemm kernel operate
at 92%-94% or so peak of the CPU which is incredibly high.
> It's the
> most credible explanation, even if the exact circumstances
> triggering it will remain obscure. I will follow your suggestions
> and try a step by step compilation, following the script.
>
> Just a precision, this is not I absolutely *want* to compile Sage,
> but unfortunately I have no choice because there is no suitable
> binary. The Sage version I currently use (2.11) was compiled by
> the Sage team, I've never succeed to complete a compilation.
> However, I have almost reached the goal (64 files in "spkg/
> installed"),
> thus my frustration !
Yes, I can certainly understand.
> If it happens you can grab the same CPU+OS without hassle and
> build a binary, I should be very grateful. Anyway, I will strive to
> finish a compilation on my own if you can't provide it.
>
> Thanks again for your support !
>
> PS.
>
> My OS/environment is :
>
> Debian Etch + gcc-4.1.2
>
> and "cat /proc/cpuinfo" returns :
> ---------------------------------------------------------------------------
> ----
> processor : 0
> vendor_id : AuthenticAMD
> cpu family : 6
> model : 2
> model name : AMD Athlon(tm) Processor
> stepping : 1
> cpu MHz : 808.004
> cache size : 512 KB
> fdiv_bug : no
> hlt_bug : no
> f00f_bug : no
> coma_bug : no
> fpu : yes
> fpu_exception : yes
> cpuid level : 1
> wp : yes
> flags : fpu vme de pse tsc msr pae mce cx8 sep mtrr pge mca cmov pat
> pse36 mmx
> fxsr syscall mmxext 3dnowext 3dnow up
> bogomips : 1617.52
> ---------------------------------------------------------------------------
> ----
The main problem here is that you do not have an sse instructions and
that makes it very hard to find a computer that is decently fast.
Cheers,
Michael
--~--~---------~--~----~------------~-------~--~----~
To post to this group, send email to sage-devel@googlegroups.com
To unsubscribe from this group, send email to [EMAIL PROTECTED]
For more options, visit this group at http://groups.google.com/group/sage-devel
URLs: http://www.sagemath.org
-~----------~----~----~----~------~----~------~--~---
