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  1. #1
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    Exclamation BCM v0.09 - The ultimate BWT-based file compressor!

    Let me introduce the best piece of my software! Please welcome, the ultimate BWT-based file compressor - BCM v0.09! This is kind of a final release, since I have no spare time completely...



    Anyway, BCM v0.09 on some test files:

    book1 -> 208,726 bytes
    calgary.tar -> 775,271 bytes
    ENWIK5 -> 1,195,166 bytes
    ENWIK8 -> 20,625,697 bytes
    world95.txt -> 463,725 bytes
    fp.log -> 551,378 bytes
    bible.txt -> 721,591 bytes
    3200.txt-> 3,641,305 bytes

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    yessssss!!! thanks encode!!! you're great!! improve compression ratio than v0.08!!
    Last edited by PiPPoNe92; 20th August 2009 at 01:41.

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    Thumbs up

    Thanks Ilia!

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    My congrats with new BCM, Ilia
    Some tests:
    Code:
                  | encode time |     size    | decode time |
    --------------------------------------------------------|
                  |         PAK0.PAK (302 895 669)          |
    --------------------------------------------------------|
    0.07 -b65536  |  181.813    | 117 053 060 |  135.813    |
    0.08 e64      |  227.422    | 116 587 092 |  185.234    |
    0.09 -b64     |  383.133    | 115 564 822 |  343.401    |
    --------------------------------------------------------|
                  |          ENWIK8 (you know :) )          |
    --------------------------------------------------------|
    0.07 -b102400 |   61.265    |  20 770 673 |   45.109    |
    0.08 e100     |   77.828    |  20 744 613 |   61.172    |
    0.09 -b100    |  110.964    |  20 625 697 |   95.135    |
    --------------------------------------------------------|
                  |         NKOEF.DBF (228 819 632)         |
    --------------------------------------------------------|
    0.07 -b32768  |  108.078    |   4 432 347 |   89.859    |
    0.08 e32      |  154.953    |   4 393 106 |  131.453    |
    0.09 -b32     |  214.163    |   4 245 588 |  192.951    |
    --------------------------------------------------------'
    By the way, on ENWIK8 BWT_reorder_v2 + BCM 0.09 -b100 = 20 555 272

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    Talking

    encode, bcm is more powerful than 7z, but it takes a few ram and cpu, if you do bcm 0.1, can you improve compression increase cpu and ram?? because now general pc have 4 gb ram and 2 cpu thanks for answers
    Last edited by PiPPoNe92; 20th August 2009 at 16:10.

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    Use '-b' option! As example:
    bcm -b320 enwik9
    bcm -b200 pak0.pak
    bcm -b471 textures.tar

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    any changes open sourcing this project?

    EDIT: Oh, I just find it. Thanks. https://sourceforge.net/projects/bcm/

  8. Thanks:

    encode (6th March 2016)

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