[FFmpeg-devel] threads regression tests seem to always fail on core 2 duo

[Baptiste Coudurier]

Hi guys,

Baptiste Coudurier wrote:
> Hi all,
> 
> On my core 2 duo box, threads regression tests always fail:
> 
> processor       : 0
> vendor_id       : GenuineIntel
> cpu family      : 6
> model           : 15
> model name      : Intel(R) Core(TM)2 Duo CPU     E6850  @ 3.00GHz
> stepping        : 11
> cpu MHz         : 2992.719
> cache size      : 4096 KB
> physical id     : 0
> siblings        : 2
> core id         : 0
> cpu cores       : 2
> 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 pni monitor ds_cpl vmx smx est tm2 ssse3 cx16 xtpr lahf_lm
> bogomips        : 5988.93
> clflush size    : 64
> 
> processor       : 1
> vendor_id       : GenuineIntel
> cpu family      : 6
> model           : 15
> model name      : Intel(R) Core(TM)2 Duo CPU     E6850  @ 3.00GHz
> stepping        : 11
> cpu MHz         : 2992.719
> cache size      : 4096 KB
> physical id     : 0
> siblings        : 2
> core id         : 1
> cpu cores       : 2
> 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 pni monitor ds_cpl vmx smx est tm2 ssse3 cx16 xtpr lahf_lm
> bogomips        : 5984.98
> clflush size    : 64
> 
> FFmpeg version SVN-r11000, Copyright (c) 2000-2007 Fabrice Bellard, et al.
>   configuration: --enable-gpl --enable-libmp3lame --enable-libfaac
> --enable-liba52 --enable-libx264 --enable-pthreads --enable-libxvid
> --enable-libfaad
>   libavutil version: 49.5.0
>   libavcodec version: 51.48.0
>   libavformat version: 51.19.0
>   built on Nov 11 2007 20:14:35, gcc: 4.2.3 20071014 (prerelease)
> (Debian 4.2.2-3)
> usage: ffmpeg [[infile options] -i infile]... {[outfile options] outfile}...
> 
> --- ./tests/data/ffmpeg.regression      2007-11-11 20:17:25.000000000 +0100
> +++ /usr/local/src/ffmpeg/svn2/tests/ffmpeg.regression.ref
> 2007-11-07 13:00:31.000000000 +0100
> @@ -27,9 +27,9 @@
>  803833 ./tests/data/a-mpeg2threadivlc.mpg
>  c0e8cbde76ff8377494fe6843fd03e11 *./tests/data/out.yuv
>  stddev:  7.63 PSNR:30.47 bytes:7602176
> -11cd11a9a797b38679203c21b1c467f5 *./tests/data/a-mpeg2reuse.mpg
> -2104591 ./tests/data/a-mpeg2reuse.mpg
> -e1e9c68b0940da9ea6ca86f8c114a7e3 *./tests/data/out.yuv
> +c8d8b07b5fa97e0affb4a52d4d30a2b6 *./tests/data/a-mpeg2reuse.mpg
> +2102956 ./tests/data/a-mpeg2reuse.mpg
> +75d3dfc8133f0122cb9e272a21bc8c5c *./tests/data/out.yuv
>  stddev:  7.67 PSNR:30.42 bytes:7602176
>  c83ae8d8f3e2b4506df58e6a2f7e3b2a *./tests/data/a-msmpeg4v2.avi
>  636512 ./tests/data/a-msmpeg4v2.avi
> @@ -87,9 +87,9 @@
>  878264 ./tests/data/a-mpeg4-Q.avi
>  8995abbcc97ed4767fcbc0bf46accd01 *./tests/data/out.yuv
>  stddev:  5.61 PSNR:33.13 bytes:7602176
> -05f6426f5dd4755f5cd72855f25c2837 *./tests/data/a-mpeg4-thread.avi
> -763972 ./tests/data/a-mpeg4-thread.avi
> -1bc53964082a0e73d00f57ab383e7268 *./tests/data/out.yuv
> +a20b1d73bb0671dbd2012494c31719a6 *./tests/data/a-mpeg4-thread.avi
> +761506 ./tests/data/a-mpeg4-thread.avi
> +a9835b5b6a34a3fd70c168dc60fb9687 *./tests/data/out.yuv
>  stddev: 12.31 PSNR:26.31 bytes:7602176
>  743cf18c1e8941591f8ab41350247c42 *./tests/data/a-mpeg4-PSP.mp4
>  406441 ./tests/data/a-mpeg4-PSP.mp4
> 
> I always get the same diff.
> 

Im just pinging the thread in case someone with threads codepath
knowledge would be kind to have a look, not being able to run full
regression tests (libavtest pass though) is becoming problematic.

Thanks a lot.

-- 
Baptiste COUDURIER                              GnuPG Key Id: 0x5C1ABAAA
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