[MPlayer-users] CPU optimization

[Arpi]

Hi,

> [Automatic answer: RTFM (read DOCS, FAQ), also read DOCS/bugreports.html]
> Hi,
> I would like to compile an mplayer binary able to run on most 
> Pentium/Celeron
> and Athlon/Duron CPUs and at the same time with the highest CPU optimization
> possible.

you want to go right and left at the same time....

for the best performance optimize it for a given single cpu.
p1, celeron, p4 and athlon are very different, is not possible to make binary
which run optimal on all them.

> 
> I have been suggested to compile with the options
> 
> --enable-mmx --enable-mmx2 --enable-3dnow --enable-3dnowex --enable-sse 
> --enable-sse2
> 
> but the binary I get refuses to play already on the machine I compiled it in
> ( CPU: AMD Athlon(tm) Processor 1GHz,
>   CPU flags: fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca 
> cmov pat
>                      pse36 mmx fxsr syscall mmxext 3dnowext 3dnow,
>   video card: ATI Technologies Inc Radeon VE QY,
>   compiler: gcc 3.2)
> 
> I looked in the DOCS but I could not find any info on the behaviour that 
> the optimization
> options are supposed to have.
> 
> In particular: an mplayer binary compiled with support for, say, SSE is 
> it supposed to work
> on a machine with a CPU that does not supoprt that flag?
> 
> In other words, the crash in my AMD 1GHz machine of the mplayer compiled 
> with the CPU
> optimization above it is exactly what was supposed to happen or it is 
> some kind of bug?
> 
> Thanks,
>  Roberto De Leo
> 
>  
> 
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> 


A'rpi / Astral & ESP-team

--
Developer of MPlayer, the Movie Player for Linux - http://www.MPlayerHQ.hu