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Thread: PAQ8HP

  1. #1
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    Thumbs up PAQ8HP

    Here's a couple of speed optimised builds for PAQ8HP12any fans...

    ENJOY!
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    Hi!
    Thanks for speedup this version! For my testbed it's the best version of paq for compressing text/doc files. It's scores are the best from all compressors on these kind of files.

    I've just started testing. Speedup for the forst files is about 10%.

    Darek

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    Hi!
    here is a file with comparison of old paq8hp12 times to new compilation for my testbed. In average of every file in my testbed speedup is on 11% level!
    Great achievemenet, especially that some files are compressed faster than paq8px60turbo by more than 20%!
    In summary new paqhp12 compilation is only 8% slower in default type of files than paq8px60turbo!

    Darek
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    Thumbs up

    Thanks for the feedback!

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    incredible compression ratio!! and it's very fast!

  6. #6
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    Quote Originally Posted by LovePimple View Post
    Here's a couple of speed optimised builds for PAQ8HP12any fans...

    ENJOY!
    Thanks, LP!

    Tested on enwik7 at -6 level
    Code:
    original         627.841
    original_sse2    639.955
    lovepimple       608.081
    lovepimple_2     612.690
    So, for my system the speedup is 3.15% only but anyway nice!

    Also a couple of issues. SSE2 version is slower than plain one but its not the main issue. For both original verions level -0 works giving the filtered but not compressed output file as it supposed to be. Levels -1\-2\-3 cause crash after some delay and leaving small output file (28 bytes) after crash. I suppose there is only header in such file. -4 level also causes crash but at the end of compression so I see the progress indicator but something happens at the end of compression. -5\-6 levels work normally.
    Also during crash SSE2 version tries to launch Dr.Watson (internal Windows debugger) so even if I press "OK" in crash report window the executable still remains in memory so I need to kill process manually. Both LP's compiles work OK

    EDIT: I forgot to say. Those issues with paq8hp12any have been noticed by LovePimple. I just confirmed them and little bit expanded.
    Last edited by Skymmer; 8th August 2009 at 14:19. Reason: My bad memory

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