Question about vlc: you will need Linux kernel 2.4.x or later

[Mac Mason]

Edit: kernel support for sse doesn't exist in 2.2, not 2.4 as I said
below.

~Mac~


On Sat, 2002-01-05 at 18:12, Mac Mason wrote:
> You're just fine with 2.2.16 (although I would very strongly suggest
> upgrading to 2.2.20 to get rid of the newgrp local root and remote DoS
> attacks)
> As far as I know, kernel support for SSE doesn't exist in 2.4
> Also, to see what a cpu with SSE looks like, here's
> #cat /proc/cpuinfo on my athlonxp 1600+:
> 
> processor       : 0
> vendor_id       : AuthenticAMD
> cpu family      : 6
> model           : 6
> model name      : AMD Athlon(tm) 4 processor
> stepping        : 2
> cpu MHz         : 1401.734
> cache size      : 256 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 apic sep mtrr pge
> mca cmov pat pse36 mmx fxsr sse syscall mmxext 3dnowext 3dnow
> bogomips        : 2798.38
> 
> Note how "flags" includedes sse.
> I believe that PIII's don't have it. 
> SSE won't make any great difference, it's really just a small
> improvement.
> (SSE2, on the other hand, can make a tremendous difference for software
> that's aware of it)
> 
> ~Mac~
> 
> 
> 
> 
> On Sat, 2002-01-05 at 16:04, jgcc at pacbell.net wrote:
> > Afterdownloading the vlc code and libdvdcss-1.0.0, I apparently
> > compiled vlc, but received the following warning:
> > 
> > bash-2.04$ ./vlc
> > warning: your OS doesn't have support for SSE instructions, some optimizations
> > will be disabled
> > (you will need Linux kernel 2.4.x or later)
> > VideoLAN Client - version 0.2.92_2002-01-05 Ourumov - (C)1996-2001 VideoLAN
> > 
> > 1) I am running on a dual cpu Intel PIII (550 Mhz). I suppose this means
> > that my chipset does not support SSE? Do I understand this
> > correctly?
> > 
> > Here is the data on my cpus from /proc:
> > 
> > processor	: 0
> > vendor_id	: GenuineIntel
> > cpu family	: 6
> > model		: 7
> > model name	: Pentium III (Katmai)
> > stepping	: 3
> > cpu MHz		: 551.259
> > cache size	: 512 KB
> > fdiv_bug	: no
> > hlt_bug		: no
> > sep_bug		: no
> > f00f_bug	: no
> > coma_bug	: no
> > fpu		: yes
> > fpu_exception	: yes
> > cpuid level	: 2
> > wp		: yes
> > flags		: fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 mmx fxsr xmm
> > bogomips	: 1101.00
> > 
> > processor	: 1
> > vendor_id	: GenuineIntel
> > cpu family	: 6
> > model		: 7
> > model name	: Pentium III (Katmai)
> > stepping	: 3
> > cpu MHz		: 551.259
> > cache size	: 512 KB
> > fdiv_bug	: no
> > hlt_bug		: no
> > sep_bug		: no
> > f00f_bug	: no
> > coma_bug	: no
> > fpu		: yes
> > fpu_exception	: yes
> > cpuid level	: 2
> > wp		: yes
> > flags		: fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 mmx fxsr xmm
> > bogomips	: 1101.00
> > 
> > 
> > 2) However, do I understand correctly that I cannot really run vlc
> > unless I upgrade my kernel to 2.4? I have a production environment
> > on my main machine which runs 2.2.16 very reliably and cannot afford
> > to upgrade to 2.4 here for another couple of months.
> > 
> > Can I go out and buy a DVD player now, or must I wait until I can
> > run 2.4 to play dvds with vlc?
> > 
> > 
> > Thank you very much for any help.
> > 
> > Jeff Collins
> > jgcc at pacbell.net
> > 
> > 
> > 
> 
> 
> 
>