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Compyx
Registered: Jan 2005
Posts: 631 |
Release id #154516 : Subsizer 0.5
Better to take this to the forum.
After adding some printf() statements to track the file open failure with "some demo.prg", the quoting of arguments works, but only sometimes. Which usually indicates a deeper problem somewhere.
Running through valgrind I get same nasty messages:
compyx@asus-p5k:~$ valgrind bin/subsizer "music demo.prg"
==25408== Memcheck, a memory error detector
==25408== Copyright (C) 2002-2015, and GNU GPL'd, by Julian Seward et al.
==25408== Using Valgrind-3.12.0.SVN and LibVEX; rerun with -h for copyright info
==25408== Command: bin/subsizer music\ demo.prg
==25408==
argv[0] = 'bin/subsizer'
argv[1] = 'music demo.prg'
build matches...
==25408== Warning: set address range perms: large range [0x395f8040, 0x98bd9040) (undefined)
...0.49 s
optimizing matches...
==25408== Conditional jump or move depends on uninitialised value(s)
==25408== at 0x10B6F4: cost_enc (in /home/compyx/bin/subsizer)
==25408== by 0x10C020: crunch_normal_int.isra.1 (in /home/compyx/bin/subsizer)
==25408== by 0x109818: main (in /home/compyx/bin/subsizer)
==25408==
5264 (left 70.84%)
0000113235660150,1112,1010122424555667,222233346666789A,132223234566679C
==25408== Conditional jump or move depends on uninitialised value(s)
==25408== at 0x4C31CC2: __memcmp_sse4_1 (vg_replace_strmem.c:1094)
==25408== by 0x10C4B4: crunch_normal_int.isra.1 (in /home/compyx/bin/subsizer)
==25408== by 0x109818: main (in /home/compyx/bin/subsizer)
==25408==
==25408== Conditional jump or move depends on uninitialised value(s)
==25408== at 0x4C31CFD: __memcmp_sse4_1 (vg_replace_strmem.c:1094)
==25408== by 0x10C4B4: crunch_normal_int.isra.1 (in /home/compyx/bin/subsizer)
==25408== by 0x109818: main (in /home/compyx/bin/subsizer)
==25408==
==25408== Conditional jump or move depends on uninitialised value(s)
==25408== at 0x10C4B7: crunch_normal_int.isra.1 (in /home/compyx/bin/subsizer)
==25408== by 0x109818: main (in /home/compyx/bin/subsizer)
==25408==
4899 (left 65.93%)
0000113235660150,1112,1010122332456667,222323346666789A,132223234566679C
4897 (left 65.90%)
0000113235660150,1112,1010122332456667,222323346666789A,132223234566679C
==25408== Conditional jump or move depends on uninitialised value(s)
==25408== at 0x4C31CD6: __memcmp_sse4_1 (vg_replace_strmem.c:1094)
==25408== by 0x10C4B4: crunch_normal_int.isra.1 (in /home/compyx/bin/subsizer)
==25408== by 0x109818: main (in /home/compyx/bin/subsizer)
==25408==
...2.02 s
==25408== Warning: set address range perms: large range [0x395f8028, 0x98bd9058) (noaccess)
generating output...
...0.02 s
packed 7431 bytes into 4897 bytes
verifed 7431 bytes...ok
==25408==
==25408== HEAP SUMMARY:
==25408== in use at exit: 0 bytes in 0 blocks
==25408== total heap usage: 101 allocs, 101 frees, 1,624,666,687 bytes allocated
==25408==
==25408== All heap blocks were freed -- no leaks are possible
==25408==
==25408== For counts of detected and suppressed errors, rerun with: -v
==25408== Use --track-origins=yes to see where uninitialised values come from
==25408== ERROR SUMMARY: 6 errors from 5 contexts (suppressed: 0 from 0)
I tried using --track-origins=yes, but that completely borked my system, that filled my memory and my swap space and made my system completely unresponsive, had to kill valgrind via a tty.
Is there bug a tracker somewhere for this? |
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tlr
Registered: Sep 2003
Posts: 1787 |
Interesting! What version of gcc?
I have:
tlr@pinecone:subsizer$ gcc --version
gcc (Ubuntu 4.8.4-2ubuntu1~14.04.3) 4.8.4
Copyright (C) 2013 Free Software Foundation, Inc.
This is free software; see the source for copying conditions. There is NO
warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
tlr@pinecone:subsizer$ |
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soci
Registered: Sep 2003
Posts: 479 |
gcc (Debian 6.3.0-8) 6.3.0 20170221
There are some harmless warnings with it:
fold.c: In function fold:
fold.c:339:12: warning: unused variable n [-Wunused-variable]
size_t n = low_limit - sa;
^
At top level:
fold.c:142:13: warning: dump_rle_entries defined but not used [-Wunused-function]
static void dump_rle_entries(void)
^~~~~~~~~~~~~~~~
In file included from fold.c:15:0:
decrunchers.h:277:18: warning: fs_list_header defined but not used [-Wunused-variable]
static FixStruct fs_list_header[] = {
^~~~~~~~~~~~~~
decrunchers.h:270:18: warning: fs_list_tail defined but not used [-Wunused-variable]
static FixStruct fs_list_tail[] = {
^~~~~~~~~~~~
decrunchers.h:263:18: warning: fs_list_decruncher defined but not used [-Wunused-variable]
static FixStruct fs_list_decruncher[] = {
^~~~~~~~~~~~~~~~~~
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tlr
Registered: Sep 2003
Posts: 1787 |
update: Subsizer 0.5.1
subsizer 0.5.1, 2017-03-21
- added LICENSE.txt
- give error if no end marker can be found.
- got rid of a few warnings as reported by soci.
- fixed issue with uninitialized memory as reported by compyx.
- added decruncher source due to popular demand. well, only bitbreaker. :)
(caution: encoding may change between versions) |
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ChristopherJam
Registered: Aug 2004
Posts: 1408 |
Has anyone tested this on the Pearl for Pigs corpus?
I'm writing a benchmarks page at codebase ( http://www.codebase64.org/doku.php?id=base:compression_benchmar.. ), and would be interesting to see where Subsizer fits in the big picture
I'll add a scatter plot soonish. |
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tlr
Registered: Sep 2003
Posts: 1787 |
I have these for subsizer 0.5:
file size (blks) left gain time mem
-----------------------------------------------------------
pfp1.bin: 2956 (12) 26.85% 73.15% 0.34s 30.05M
pfp2.bin: 2205 (9) 44.34% 55.66% 0.10s 27.47M
pfp3.bin: 1788 (8) 45.28% 54.72% 0.08s 25.08M
pfp4.bin: 3456 (14) 49.26% 50.74% 0.16s 25.46M
pfp5.bin: 19519 (77) 56.15% 43.85% 1.23s 74.61M
pfp6.bin: 8396 (34) 26.57% 73.43% 1.33s 83.25M
pfp7.bin: 8766 (35) 42.99% 57.01% 0.51s 32.22M
pfp8.bin: 3063 (13) 53.61% 46.39% 0.15s 24.89M
pfp9.bin: 5307 (21) 59.23% 40.77% 0.14s 25.58M
-----------------------------------------------------------No decruncher speeds as there is no standalone decruncher yet.
Curious question: are we measuring those in cycles without badlines? |
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ChristopherJam
Registered: Aug 2004
Posts: 1408 |
Quoting tlrI have these for subsizer 0.5:
No decruncher speeds as there is no standalone decruncher yet.
Curious question: are we measuring those in cycles without badlines?
Thanks! Yes, time in cycles with neither badlines nor interrupts, either by using CIA or breakpoints+cyclecounter in VICE. |
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ChristopherJam
Registered: Aug 2004
Posts: 1408 |
Also, wow - those are tiny!
Even smaller than exomizer. I really need to time those two... |
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Frantic
Registered: Mar 2003
Posts: 1646 |
Well, if you call yourself The Leader, you need to be second to none! |
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ChristopherJam
Registered: Aug 2004
Posts: 1408 |
Scatter plot's up at http://www.codebase64.org/doku.php?id=base:compression_benchmar.. :) |
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tlr
Registered: Sep 2003
Posts: 1787 |
I wanted to replicate some of the results as a baseline but can't really get the same values.
This is what I get for lzwvl-f: name size left cycles frm spd cons
pfp1.bin: 4529 (18) 41.14% 234334 11.9 45.2k/s 51.7c/b
pfp2.bin: 3532 (14) 71.02% 127774 6.5 37.4k/s 36.2c/b
pfp3.bin: 2991 (12) 75.74% 95420 4.9 39.8k/s 31.9c/b
pfp4.bin: 4242 (17) 60.46% 153715 7.8 43.9k/s 36.2c/b
pfp5.bin: 25781 (102) 74.17% 730916 37.2 45.8k/s 28.4c/b
pfp6.bin: 11283 (45) 35.70% 644479 32.8 47.2k/s 57.1c/b
pfp7.bin: 12108 (48) 59.38% 466960 23.8 42.0k/s 38.6c/b
pfp8.bin: 4179 (17) 73.15% 142155 7.2 38.7k/s 34.0c/b
pfp9.bin: 6914 (28) 77.17% 226119 11.5 38.1k/s 32.7c/bThe cycle count is slightly off, presumably due to obscure timing model errors in unp64 which I'm using to emulate the depacker. I verified the timing in vice for a few and the error for those was about 1% or so.
Note especially the difference between pfp6.bin and pfp7.bin.
The last value is cycles per byte _consumed_ as in the tables. Is this really a useful measure? |
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