On Jul 16, 6:49 pm, "Andrzej Giniewicz" <[EMAIL PROTECTED]> wrote:
> Hi,

Hi,

> On Thu, Jul 17, 2008 at 2:39 AM, Craig Citro <[EMAIL PROTECTED]> wrote:
>
> > This is bad, in the sense that it's wrong. What machine was this
> > happening on?
>
> in my case it's AMD Athlon from "Barton age", there's cpuinfo:

I think it is independent of the CPU type. I ran ssmod.py 150 times on
sage.math with 3.0.4 (my valgrind special) and I got two failures:


3.0.4-vg: twice in 150 runs

sage -t -long devel/sage/sage/modular/ssmod/ssmod.py
**********************************************************************
File "/scratch/mabshoff/release-cycle/sage-3.0.4-vg/tmp/ssmod.py",
line 14:
    sage: D[:3]
Expected:
    [
    (Vector space of degree 33 and dimension 1 over Finite Field of
size 97
    Basis matrix:
    [ 0  0  0  1 96 96  1 96 96  0  2 96 96  0  1  0  1  2 95  0  1
1  0  1  0 95  0 96 95  1 96  0  2], True),
    (Vector space of degree 33 and dimension 1 over Finite Field of
size 97
    Basis matrix:
    [ 0  1 96 75 16 81 22 17 17  0  0 80 80  1 16 40 74  0  0 96 81 23
57 74  0  0  0 24  0 23 73  0  0], True),
    (Vector space of degree 33 and dimension 1 over Finite Field of
size 97
    Basis matrix:
    [ 0  1 96 90 90  7  7  6 91  0  0 91  6 13  7  0 91  0  0 84 90
6  0  6  0  0  0 90  0 91  7  0  0], True)
    ]
Got:
    [
    (Vector space of degree 33 and dimension 0 over Finite Field of
size 97
    Basis matrix:
    [], True),
    (Sparse vector space of degree 33 and dimension 8 over Finite
Field of size 97
    Basis matrix:
    [ 1  0  0  0  0  0  0  0 78 55 59  6 76 85 61 87 10 26 51 29 79 46
51 17 36 45 19 31 88 13 52 50 73]
    [ 0  1  0  0  0  0  0  0 18 21 87 47  6 94 96 93 92 51 16 78 77 69
71 25 61 20 15 77  8 60 72 50 88]
    [ 0  0  1  0  0  0  0  0  1 78 76 71 33 92 79 61 69 37 49 28 27 64
83 58 68 60 52 86 80 57 75 69 41]
    [ 0  0  0  1  0  0  0  0 43 55 44 23 77 24 74 28 37 71 36 15  0 24
58 80 65 70 73 54 54 71 75 96 92]
    [ 0  0  0  0  1  0  0  0 49 58 10 44 75 30 29 64 42  3 19 50 51 58
18 50 83  0 39 38 17 56 45  1 49]
    [ 0  0  0  0  0  1  0  0 47 76 15  0 48 38 39 62 17 13 60 54  0  6
76 52 68 42 81  7 31 96 34 65 42]
    [ 0  0  0  0  0  0  1  0  8 24 53 29 48 93 27 10 26 18 30 41  7
39  1 42 57  3 11  7 17  2  6 76 44]
    [ 0  0  0  0  0  0  0  1  8  3 90 32 13 92 79 13 96 56  2 84 62 73
67  9 68 12 54 12 38 44 74 79 16], True),
    (Sparse vector space of degree 33 and dimension 24 over Finite
Field of size 97
    Basis matrix:
    24 x 33 sparse matrix over Finite Field of size 97, True)
    ]
**********************************************************************
File "/scratch/mabshoff/release-cycle/sage-3.0.4-vg/tmp/ssmod.py",
line 26:
    sage: len(D)
Expected:
    9
Got:
    3
**********************************************************************
1 items had failures:
   2 of  17 in __main__.example_0


sage -t -long devel/sage/sage/modular/ssmod/ssmod.py
**********************************************************************
File "/scratch/mabshoff/release-cycle/sage-3.0.4-vg/tmp/ssmod.py",
line 14:
    sage: D[:3]
Expected:
    [
    (Vector space of degree 33 and dimension 1 over Finite Field of
size 97
    Basis matrix:
    [ 0  0  0  1 96 96  1 96 96  0  2 96 96  0  1  0  1  2 95  0  1
1  0  1  0 95  0 96 95  1 96  0  2], True),
    (Vector space of degree 33 and dimension 1 over Finite Field of
size 97
    Basis matrix:
    [ 0  1 96 75 16 81 22 17 17  0  0 80 80  1 16 40 74  0  0 96 81 23
57 74  0  0  0 24  0 23 73  0  0], True),
    (Vector space of degree 33 and dimension 1 over Finite Field of
size 97
    Basis matrix:
    [ 0  1 96 90 90  7  7  6 91  0  0 91  6 13  7  0 91  0  0 84 90
6  0  6  0  0  0 90  0 91  7  0  0], True)
    ]
Got:
    [
    (Vector space of degree 33 and dimension 0 over Finite Field of
size 97
    Basis matrix:
    [], True),
    (Sparse vector space of degree 33 and dimension 9 over Finite
Field of size 97
    Basis matrix:
    [ 1  0  0  0  0  0  0  0  0 34 40 62 51 59 46 74 64 57 82 74 77 80
90 80 73 87 66 33 20 47 30 19 45]
    [ 0  1  0  0  0  0  0  0  0 17 32 57 79 31 36 48 32 82 41 17 82 91
53 10 87 49  6 84 51  2 93 44 25]
    [ 0  0  1  0  0  0  0  0  0 23 79 30 53 62  8 48 34 15 17 10 78  2
70 30 28 89 34 19 72 44 62 87 78]
    [ 0  0  0  1  0  0  0  0  0 72 53 11  4 87 88 25 92 71  9 95 65 90
91 55 43 33 76 31 22 79  2  1 84]
    [ 0  0  0  0  1  0  0  0  0 89 24 91 61 89 88  5 51 74 17 24 82 39
91 83 28 58 31 27 38 33 21 76 39]
    [ 0  0  0  0  0  1  0  0  0 83 29 29 48 78 12 18 26 78 44 25 84  8
35  3 60 45 19 95 81 46 58 16 87]
    [ 0  0  0  0  0  0  1  0  0 36  7 69 96 90 32 78 69 40 54 20  5
6  5 36 22 80 61 95 16 66 45 25 50]
    [ 0  0  0  0  0  0  0  1  0 53 35 63 28 20  0 77 17 44 16 24  3 69
37 52  4 95 90  3 57 52 14 92 17]
    [ 0  0  0  0  0  0  0  0  1 92 29 68 90 14  1 43  4 69 51 12 74 19
12 59  8 48 52 40 38 41 72  9 30], True),
    (Sparse vector space of degree 33 and dimension 23 over Finite
Field of size 97
    Basis matrix:
    23 x 33 sparse matrix over Finite Field of size 97, True)
    ]
**********************************************************************
File "/scratch/mabshoff/release-cycle/sage-3.0.4-vg/tmp/ssmod.py",
line 26:
    sage: len(D)
Expected:
    9
Got:
    3
**********************************************************************
1 items had failures:
   2 of  17 in __main__.example_0

Does anyone see a pattern?

<SNIP>

> if there is anything I can do to help test it some more, you can count on me,
>
> cheers,
> Andrzej.

Besides FLINT there is always the possibility that LinBox is
involved :). I do not have a 3.0.3 tree, so I am building one now.

Cheers,

Michael
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