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October 25, 2002 dmc performance | ||||
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Hi all, I just managed to compile the ogg vorbis encoder (www.xiph.org/ogg/vorbis) with dmc v830. This itself is a big step because the previous versions failed to do it. They crashed with internal errors cgcod 2347 and cg87 268. The porting to dmc was very easy. I had to add only two defines and to fix two mistyped function declarations and everithing was just fine. Because i know that encoding a wave file to ogg format is a very computational process, and because i was curious about how dmc compares to vc in code optimizations and executable size, i compiled the encoder with vc6 too and run both encoders several times against one wave file. Here are the results: both executables are static builds, the dmc switches are: -6 -ff -a8 -Nc -o -Aw -Ab -Jm -DNDEBUG haven't touched the vc options Size of compiled oggenc.exe file: vc compiled- 1073152 bytes dmc compiled- 1088028 bytes average encoding time for first wav: vc compiled-2m 00s dmc compiled-2m 09s Just in case i encoded another wave file: vc compiled-2m 40s dmc compiled-2m 51s This are average times but the bigest deviation was 2 sec for both encoders. Best regards rado |
October 25, 2002 Re: dmc performance | ||||
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Posted in reply to rado | Thanks for doing this. The differences seem inconsequential to me. It would be cool if you could fold the DMC support back into the main source tree for vorbis! -Walter "rado" <rpaskalev@cofief.bg> wrote in message news:1103_1035573239@news.digitalmars.com... > Hi all, > > I just managed to compile the ogg vorbis encoder (www.xiph.org/ogg/vorbis) with dmc v830. > This itself is a big step because the previous versions failed to do it. They crashed with internal errors cgcod 2347 and cg87 > 268. > The porting to dmc was very easy. I had to add only two defines and to fix two mistyped function declarations and everithing > was just fine. > Because i know that encoding a wave file to ogg format is a very computational process, and because i was curious about how dmc > compares to vc in code optimizations and executable size, i compiled the encoder with vc6 too and run both encoders several > times against one wave file. > > Here are the results: > both executables are static builds, > the dmc switches are: -6 -ff -a8 -Nc -o -Aw -Ab -Jm -DNDEBUG > haven't touched the vc options > > Size of compiled oggenc.exe file: > vc compiled- 1073152 bytes > dmc compiled- 1088028 bytes > > average encoding time for first wav: > vc compiled-2m 00s > dmc compiled-2m 09s > > Just in case i encoded another wave file: > vc compiled-2m 40s > dmc compiled-2m 51s > > This are average times but the bigest deviation was 2 sec for both encoders. > > > Best regards > rado > > |
October 26, 2002 Re: dmc performance | ||||
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Posted in reply to Walter | Hi,
I will send them the patches and the makefiles and i hope they will accept them. It will be good to have support for dmc in a big and popular project like this.
Just one thing. Are this the optimal switches for compilation or there is a better combination.
best regards
rado
Fri, 25 Oct 2002 12:27:38 -0700, "Walter" <walter@digitalmars.com> ?8H5:
> Thanks for doing this. The differences seem inconsequential to me. It would be cool if you could fold the DMC support back into the main source tree for vorbis!
>
> -Walter
>
> "rado" <rpaskalev@cofief.bg> wrote in message news:1103_1035573239@news.digitalmars.com...
> > Hi all,
> >
> > I just managed to compile the ogg vorbis encoder (www.xiph.org/ogg/vorbis)
> with dmc v830.
> > This itself is a big step because the previous versions failed to do it.
> They crashed with internal errors cgcod 2347 and cg87
> > 268.
> > The porting to dmc was very easy. I had to add only two defines and to fix
> two mistyped function declarations and everithing
> > was just fine.
> > Because i know that encoding a wave file to ogg format is a very
> computational process, and because i was curious about how dmc
> > compares to vc in code optimizations and executable size, i compiled the
> encoder with vc6 too and run both encoders several
> > times against one wave file.
> >
> > Here are the results:
> > both executables are static builds,
> > the dmc switches are: -6 -ff -a8 -Nc -o -Aw -Ab -Jm -DNDEBUG
> > haven't touched the vc options
> >
> > Size of compiled oggenc.exe file:
> > vc compiled- 1073152 bytes
> > dmc compiled- 1088028 bytes
> >
> > average encoding time for first wav:
> > vc compiled-2m 00s
> > dmc compiled-2m 09s
> >
> > Just in case i encoded another wave file:
> > vc compiled-2m 40s
> > dmc compiled-2m 51s
> >
> > This are average times but the bigest deviation was 2 sec for both
> encoders.
> >
> >
> > Best regards
> > rado
> >
> >
>
>
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October 26, 2002 Re: dmc performance | ||||
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Posted in reply to rado | I'd modify the switches as follows: -6 Omit, since I adjust the default anyway to be the most recent processor. -a8 Omit, this is the default for win32. The default anyway is almost always what is desirable. "rado" <rpaskalev@cofief.bg> wrote in message news:1103_1035633940@news.digitalmars.com... > Hi, > > I will send them the patches and the makefiles and i hope they will accept them. > It will be good to have support for dmc in a big and popular project like this. > > Just one thing. Are this the optimal switches for compilation or there is a better combination. > > best regards > rado > > > Fri, 25 Oct 2002 12:27:38 -0700, "Walter" <walter@digitalmars.com> ?8H5: > > Thanks for doing this. The differences seem inconsequential to me. It would > > be cool if you could fold the DMC support back into the main source tree for > > vorbis! > > > > -Walter > > > > "rado" <rpaskalev@cofief.bg> wrote in message news:1103_1035573239@news.digitalmars.com... > > > Hi all, > > > > > > I just managed to compile the ogg vorbis encoder (www.xiph.org/ogg/vorbis) > > with dmc v830. > > > This itself is a big step because the previous versions failed to do it. > > They crashed with internal errors cgcod 2347 and cg87 > > > 268. > > > The porting to dmc was very easy. I had to add only two defines and to fix > > two mistyped function declarations and everithing > > > was just fine. > > > Because i know that encoding a wave file to ogg format is a very > > computational process, and because i was curious about how dmc > > > compares to vc in code optimizations and executable size, i compiled the > > encoder with vc6 too and run both encoders several > > > times against one wave file. > > > > > > Here are the results: > > > both executables are static builds, > > > the dmc switches are: -6 -ff -a8 -Nc -o -Aw -Ab -Jm -DNDEBUG > > > haven't touched the vc options > > > > > > Size of compiled oggenc.exe file: > > > vc compiled- 1073152 bytes > > > dmc compiled- 1088028 bytes > > > > > > average encoding time for first wav: > > > vc compiled-2m 00s > > > dmc compiled-2m 09s > > > > > > Just in case i encoded another wave file: > > > vc compiled-2m 40s > > > dmc compiled-2m 51s > > > > > > This are average times but the bigest deviation was 2 sec for both > > encoders. > > > > > > > > > Best regards > > > rado > > > > > > > > > > > > > |
October 29, 2002 Re: dmc performance | ||||
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Posted in reply to Walter | Default switches for VC 6 is not the same enviroment as for DMC, since VC does not perform a lot of optimizations without the -O2 flag. "Walter" <walter@digitalmars.com> escribió en el mensaje news:apc64i$hla$1@digitaldaemon.com... > Thanks for doing this. The differences seem inconsequential to me. It would > be cool if you could fold the DMC support back into the main source tree for > vorbis! > > -Walter > > "rado" <rpaskalev@cofief.bg> wrote in message news:1103_1035573239@news.digitalmars.com... > > Hi all, > > > > I just managed to compile the ogg vorbis encoder (www.xiph.org/ogg/vorbis) > with dmc v830. > > This itself is a big step because the previous versions failed to do it. > They crashed with internal errors cgcod 2347 and cg87 > > 268. > > The porting to dmc was very easy. I had to add only two defines and to fix > two mistyped function declarations and everithing > > was just fine. > > Because i know that encoding a wave file to ogg format is a very > computational process, and because i was curious about how dmc > > compares to vc in code optimizations and executable size, i compiled the > encoder with vc6 too and run both encoders several > > times against one wave file. > > > > Here are the results: > > both executables are static builds, > > the dmc switches are: -6 -ff -a8 -Nc -o -Aw -Ab -Jm -DNDEBUG > > haven't touched the vc options > > > > Size of compiled oggenc.exe file: > > vc compiled- 1073152 bytes > > dmc compiled- 1088028 bytes > > > > average encoding time for first wav: > > vc compiled-2m 00s > > dmc compiled-2m 09s > > > > Just in case i encoded another wave file: > > vc compiled-2m 40s > > dmc compiled-2m 51s > > > > This are average times but the bigest deviation was 2 sec for both > encoders. > > > > > > Best regards > > rado > > > > > > |
October 30, 2002 Re: dmc performance | ||||
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Posted in reply to Javier Gutiérrez | For building vc executable i used the visual studio project files that come with vorbis packages and they all had "Optimize for speed" option selected, which includes the -O2 flag. 0 Tue, 29 Oct 2002 13:57:37 +0100, "Javier Gutiérrez" <nikkho@NOSPAM@hotmail.com> ?8H5: > Default switches for VC 6 is not the same enviroment as for DMC, since > VC does not perform a lot of optimizations without the -O2 flag. > > "Walter" <walter@digitalmars.com> escribió en el mensaje news:apc64i$hla$1@digitaldaemon.com... > > Thanks for doing this. The differences seem inconsequential to me. It > would > > be cool if you could fold the DMC support back into the main source tree > for > > vorbis! > > > > -Walter > > > > "rado" <rpaskalev@cofief.bg> wrote in message news:1103_1035573239@news.digitalmars.com... > > > Hi all, > > > > > > I just managed to compile the ogg vorbis encoder > (www.xiph.org/ogg/vorbis) > > with dmc v830. > > > This itself is a big step because the previous versions failed to do it. > > They crashed with internal errors cgcod 2347 and cg87 > > > 268. > > > The porting to dmc was very easy. I had to add only two defines and to > fix > > two mistyped function declarations and everithing > > > was just fine. > > > Because i know that encoding a wave file to ogg format is a very > > computational process, and because i was curious about how dmc > > > compares to vc in code optimizations and executable size, i compiled the > > encoder with vc6 too and run both encoders several > > > times against one wave file. > > > > > > Here are the results: > > > both executables are static builds, > > > the dmc switches are: -6 -ff -a8 -Nc -o -Aw -Ab -Jm -DNDEBUG > > > haven't touched the vc options > > > > > > Size of compiled oggenc.exe file: > > > vc compiled- 1073152 bytes > > > dmc compiled- 1088028 bytes > > > > > > average encoding time for first wav: > > > vc compiled-2m 00s > > > dmc compiled-2m 09s > > > > > > Just in case i encoded another wave file: > > > vc compiled-2m 40s > > > dmc compiled-2m 51s > > > > > > This are average times but the bigest deviation was 2 sec for both > > encoders. > > > > > > > > > Best regards > > > rado > > > > > > > > > > > > Radoslav PASKALEV --------------------------------------- e-mail : rpaskalev@codix-france.com WEB : http://www.codix-france.com |
October 30, 2002 Re: dmc performance | ||||
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Posted in reply to Radoslav Paskalev | In that case, is a good result of DMC to be at the level of VC! "Radoslav Paskalev" <rpaskalev@crx.tm.fr> escribió en el mensaje news:1103_1035969382@news.digitalmars.com... > For building vc executable i used the visual studio project files that come with vorbis packages and they all had "Optimize for speed" option selected, which includes the -O2 flag. > > 0 Tue, 29 Oct 2002 13:57:37 +0100, "Javier Gutiérrez" <nikkho@NOSPAM@hotmail.com> ?8H5: > > Default switches for VC 6 is not the same enviroment as for DMC, since > > VC does not perform a lot of optimizations without the -O2 flag. > > > > "Walter" <walter@digitalmars.com> escribió en el mensaje news:apc64i$hla$1@digitaldaemon.com... > > > Thanks for doing this. The differences seem inconsequential to me. It > > would > > > be cool if you could fold the DMC support back into the main source tree > > for > > > vorbis! > > > > > > -Walter > > > > > > "rado" <rpaskalev@cofief.bg> wrote in message news:1103_1035573239@news.digitalmars.com... > > > > Hi all, > > > > > > > > I just managed to compile the ogg vorbis encoder > > (www.xiph.org/ogg/vorbis) > > > with dmc v830. > > > > This itself is a big step because the previous versions failed to do it. > > > They crashed with internal errors cgcod 2347 and cg87 > > > > 268. > > > > The porting to dmc was very easy. I had to add only two defines and to > > fix > > > two mistyped function declarations and everithing > > > > was just fine. > > > > Because i know that encoding a wave file to ogg format is a very > > > computational process, and because i was curious about how dmc > > > > compares to vc in code optimizations and executable size, i compiled the > > > encoder with vc6 too and run both encoders several > > > > times against one wave file. > > > > > > > > Here are the results: > > > > both executables are static builds, > > > > the dmc switches are: -6 -ff -a8 -Nc -o -Aw -Ab -Jm -DNDEBUG > > > > haven't touched the vc options > > > > > > > > Size of compiled oggenc.exe file: > > > > vc compiled- 1073152 bytes > > > > dmc compiled- 1088028 bytes > > > > > > > > average encoding time for first wav: > > > > vc compiled-2m 00s > > > > dmc compiled-2m 09s > > > > > > > > Just in case i encoded another wave file: > > > > vc compiled-2m 40s > > > > dmc compiled-2m 51s > > > > > > > > This are average times but the bigest deviation was 2 sec for both > > > encoders. > > > > > > > > > > > > Best regards > > > > rado > > > > > > > > > > > > > > > > > > > Radoslav PASKALEV > > --------------------------------------- > e-mail : rpaskalev@codix-france.com > WEB : http://www.codix-france.com > > |
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