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Thread: paq8 on low end hardware

  1. #1
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    Cool paq8 on low end hardware

    So i tested paq8f on very low hardware: am486dx4 120 MHz 16MB RAM L2 512kb, Linux 2.4.37.11 (cpuinfo: bogomisp -> 59.80 )

    Had to modify one line in code:

    Code:
      
      static ContextMap cm(MEM*32, 9);
    to
      static ContextMap cm(MEM, 9);
    Compiled: g++ paq8f.cpp -DUNIX -DNOASM -march=i486 -O3 -s -static -o paq8f
    Run: ./paq8f -1 paq8f.cpp
    Compressed to: 116318->31904
    Time 319 sec, Mem 17816096 bytes.
    In the end there was small swaping.

    Decompress reported identical.

    Attachment has source and linux binary.

    Similar test:
    Quote Originally Posted by kaitz View Post
    I made a test on Pentium 3 (ca 866 MHz), 875 MB RAM, Linux Mint 13.

    Compiled: g++ -O3 paq8pxd_v11.cpp -o paq8pxd -s
    Compressed:
    Code:
    ./paq8pxd paq8pxd_v11.cpp 
    Creating archive paq8pxd_v11.cpp.paq8pxd11 with 1 file(s)...
    
    File list (24 bytes)
    Compressed from 24 to 26 bytes.
    
    1/1  Filename: paq8pxd_v11.cpp (234078 bytes)
    Block segmentation:
     0           | default   |    234078 b [0 - 234077]
    Compressed from 234078 to 42072 bytes.
    
    Total 234078 bytes compressed to 42134 bytes.
    
     Segment data size: 9 bytes
    
     TN |Type name |Count      |Total size
    -----------------------------------------
      0 |default   |         1 |     234078
    -----------------------------------------
    Total level  0 |         1 |     234078
    
    Time 307.80 sec, used 237431664 bytes of memory
    
    Close this window or press ENTER to continue...
    Decompression identical.
    Not bad.
    On my Core2Duo E4500 2.2GHz it takes about 30 sec.
    Quote Originally Posted by Sportman View Post
    For single core CPU's Moore's law is broken already a long time:

    My almost 3 years old computer beat my new computer with your paq8pxd_v11 test:

    15.49 sec, November 12, 2007, Intel Core 2 QX9650 3.0GHz (OC 3.99GHz) DDR3 1680MHz CL9
    11.48 sec, November 14, 2011, Intel i7 3960X 3.3GHZ (OC 4.4GHz), DDR3 2133MHZ CL11
    11.73 sec, September 10, 2013, Intel i7 4960X 3.6GHz (OC 4.5GHz), DDR3 2000MHz CL10
    Attached Files Attached Files
    KZo


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