[gs-bugs] [Bug 690650] Differences in raster output

bugs.ghostscript.com-bugzilla-daemon at ghostscript.com bugs.ghostscript.com-bugzilla-daemon at ghostscript.com
Thu Jul 23 13:57:38 PDT 2009


http://bugs.ghostscript.com/show_bug.cgi?id=690650





------- Additional Comments From marcos.woehrmann at artifex.com  2009-07-23 13:57 -------
Created an attachment (id=5235)
 --> (http://bugs.ghostscript.com/attachment.cgi?id=5235&action=view)
all.csv.gz

Comparison of all 6 machines with 32-bit and 64-bit binaries.  The machines
are:

amd64: AMD Athlon(tm) 64 X2 Dual Core Processor 5600+
g5: PowerPC 970 (G5) @ 1.8GHz 
i7: Intel Core i7 CPU  920  @ 2.67GHz
i7a: Intel Core CPU  965  @ 3.20GHz
imac: Intel Core 2 Extreme X7800 @ 2.80GHz
peeves: Intel Core 2 Extreme CPU X9770	@ 3.20GHz

The order of the machines/binary word size:
amd64_32
amd64_64
g5_32
g5_64
i7_32
i7_64
i7a_32
i7a_64
imac_32
imac_64
peeves_32
peeves_64

Here are the top profiles:

aabbbbbbbbbb 9008
aaaaaaaaaaaa 5270
abccdcdcccdc 1239
abbbababbbab 625
abccdedeeede 385
aabbbbbbbbaa 252
abcccccccccc 251
aabbbbbbbbcc 99
abcdababbbab 76
abababababab 74
abccababbbab 49
aabbcccccccc 47
abcdcdcdcdcd 45
abcbababcbab 41
abbbcbcbbbcb 34
aabcbbbbbbbb 32
abcdededcded 31
aabbcbcbbbcb 31
abbbbbbbbbbb 29
abcccdcdddcd 25
abcdefefefef 24
abbcababbbab 22
abcdefefgfef 21
abccdcdcccab 20
aaaababaaaba 20
aabbaaaabbbb 15
abcdcececece 15
abccacacccac 12
abcdefefffef 12
abccdcdccceb 10
.
.
.

Recall that aabbbbbbbbbb means that the amd64_32 and amd64_64 md5sums matched
and all the other 10 md5sums matched.  This the most common profile, occurring
9008 times out of the 17895 times.

The third most common profile, abccdcdcccdc, which occurs 1239 times, indicates
the following machine groupings:

amd64_32
amd64_64
g5_32, g5_64, i7_64, i7a_64, imac_32, imac_64, peeves_64
i7_32, i7a_32, peeves_32




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