[Gmsh] Reproduceable gmsh 3D meshing error...

Toshiro K. Ohsumi ohsumit at cs.rpi.edu
Mon Dec 16 04:23:59 CET 2002


Hello,

   I have a reproducable 3D mesh gmsh error.  Attached below is the model.  
With lc = 0.25, with cross.msh (attached below), the error is attached below.
With lc = 0.375, no error messages occur.  I am using gmsh 1.36.0.  Many 
thanks,


		- Toshiro K. Ohsumi


---------------------------- cross.msh -------------------------------------

lc = 0.25;
Point(1) = {-0.35,-17.5,0.1,lc};
Point(2) = {0.35,-17.5,0.1,lc};
Point(3) = {0.35,-0.35,0.1,lc};
Point(4) = {17.5,-0.35,0.1,lc};
Point(5) = {17.5,0.35,0.1,lc};
Point(6) = {0.35,0.35,0.1,lc};
Point(7) = {0.35,17.5,0.1,lc};
Point(8) = {-0.35,17.5,0.1,lc};
Point(9) = {-0.35,0.35,0.1,lc};
Point(10) = {-17.5,0.35,0.1,lc};
Point(11) = {-17.5,-0.35,0.1,lc};
Point(12) = {-0.35,-0.35,0.1,lc};
Point(13) = {-0.35,-17.5,-0.1,lc};
Point(14) = {0.35,-17.5,-0.1,lc};
Point(15) = {0.35,-0.35,-0.1,lc};
Point(16) = {17.5,-0.35,-0.1,lc};
Point(17) = {17.5,0.35,-0.1,lc};
Point(18) = {0.35,0.35,-0.1,lc};
Point(19) = {0.35,17.5,-0.1,lc};
Point(20) = {-0.35,17.5,-0.1,lc};
Point(21) = {-0.35,0.35,-0.1,lc};
Point(22) = {-17.5,0.35,-0.1,lc};
Point(23) = {-17.5,-0.35,-0.1,lc};
Point(24) = {-0.35,-0.35,-0.1,lc};
Line(30) = {1,2};
Line(31) = {2,3};
Line(32) = {3,4};
Line(33) = {4,5};
Line(34) = {5,6};
Line(35) = {6,7};
Line(36) = {7,8};
Line(37) = {8,9};
Line(38) = {9,10};
Line(39) = {10,11};
Line(40) = {11,12};
Line(41) = {12,1};
Line(42) = {13,14};
Line(43) = {14,15};
Line(44) = {15,16};
Line(45) = {16,17};
Line(46) = {17,18};
Line(47) = {18,19};
Line(48) = {19,20};
Line(49) = {20,21};
Line(50) = {21,22};
Line(51) = {22,23};
Line(52) = {23,24};
Line(53) = {24,13};
Line(54) = {1,13};
Line(55) = {2,14};
Line(56) = {3,15};
Line(57) = {4,16};
Line(58) = {5,17};
Line(59) = {6,18};
Line(60) = {7,19};
Line(61) = {8,20};
Line(62) = {9,21};
Line(63) = {10,22};
Line(64) = {11,23};
Line(65) = {12,24};
Line Loop(70) = {30,31,32,33,34,35,36,37,38,39,40,41};
Plane Surface(71) = {70};
Line Loop(72) = {42,43,44,45,46,47,48,49,50,51,52,53};
Plane Surface(73) = {72};
Line Loop(74) = {30,55,-42,-54};
Plane Surface(75) = {74};
Line Loop(76) = {55,43,-56,-31};
Plane Surface(77) = {76};
Line Loop(78) = {32,57,-44,-56};
Plane Surface(79) = {78};
Line Loop(80) = {57,45,-58,-33};
Plane Surface(81) = {80};
Line Loop(82) = {58,46,-59,-34};
Plane Surface(83) = {82};
Line Loop(84) = {59,47,-60,-35};
Plane Surface(85) = {84};
Line Loop(86) = {60,48,-61,-36};
Plane Surface(87) = {86};
Line Loop(88) = {62,-49,-61,37};
Plane Surface(89) = {88};
Line Loop(90) = {-38,62,50,-63};
Plane Surface(91) = {90};
Line Loop(92) = {63,51,-64,-39};
Plane Surface(93) = {92};
Line Loop(94) = {65,-52,-64,40};
Plane Surface(95) = {94};
Line Loop(96) = {54,-53,-65,41};
Plane Surface(97) = {96};
Surface Loop(100) = {71,73,75,77,79,81,83,85,87,89,91,93,95,97};
Volume(101) = {100};

----------------------------- .gmsh-errors ---------------------------------

Gmsh 1.36.0
-------------------------------------------------------
Build OS       : CYGWIN_ME-4.90 1.3.5(0.47/3/2)
Build date     : Thu Nov 21 02:10:15  2002
Build host     : ELAP74
Packager       : geuzaine
Home directory : /cygdrive/c/DOCUME~1/TOSHIR~1.OHS/LOCALS~1/Temp/
Launch date    : Sun Dec 15 22:16:45 2002
Command line   : /cygdrive/c/Program Files/Gmsh/gmsh
-------------------------------------------------------
Geometry
Loading '/cygdrive/c/TEMP/cross.geo'
Loaded '/cygdrive/c/TEMP/cross.geo'
Mesh
Mesh 1D...
Meshing Curve 30
Meshing Curve 31
Meshing Curve 32
Meshing Curve 33
Meshing Curve 34
Meshing Curve 35
Meshing Curve 36
Meshing Curve 37
Meshing Curve 38
Meshing Curve 39
Meshing Curve 40
Meshing Curve 41
Meshing Curve 42
Meshing Curve 43
Meshing Curve 44
Meshing Curve 45
Meshing Curve 46
Meshing Curve 47
Meshing Curve 48
Meshing Curve 49
Meshing Curve 50
Meshing Curve 51
Meshing Curve 52
Meshing Curve 53
Meshing Curve 54
Meshing Curve 55
Meshing Curve 56
Meshing Curve 57
Meshing Curve 58
Meshing Curve 59
Meshing Curve 60
Meshing Curve 61
Meshing Curve 62
Meshing Curve 63
Meshing Curve 64
Meshing Curve 65
Mesh 1D complete (0.01 s)
Mesh 2D...
Meshing Surface 71
Meshing Surface 73
Meshing Surface 75
Meshing Surface 77
Meshing Surface 79
Meshing Surface 81
Meshing Surface 83
Meshing Surface 85
Meshing Surface 87
Meshing Surface 89
Meshing Surface 91
Meshing Surface 93
Meshing Surface 95
Meshing Surface 97
Mesh 2D complete (0.601 s)
Mesh 3D...
Mesh 3D... (initial)
Nod=103/2067 Elm=518
Vol=672.28 (102 0 1)
Nod=206/2067 Elm=1026
Vol=672.28 (205 0 1)
Nod=309/2067 Elm=1534
Vol=672.28 (308 0 1)
Nod=412/2067 Elm=2045
Vol=672.28 (411 0 1)
Nod=515/2067 Elm=2656
Vol=672.28 (514 0 1)
Nod=618/2067 Elm=3154
Vol=672.28 (617 0 1)
Nod=721/2067 Elm=3771
Vol=672.28 (720 0 1)
Nod=824/2067 Elm=4496
Vol=672.28 (797 24 3)
Nod=927/2067 Elm=4981
Vol=672.28 (809 110 8)
Nod=1030/2067 Elm=5617
Vol=672.28 (823 194 13)
Nod=1133/2067 Elm=6202
Vol=672.28 (832 283 18)
Fatal Error : Segmentation violation (invalid memory reference)
            : ------------------------------------------------------
            : You have discovered a bug in Gmsh! You may report it
            : by e-mail (together with any helpful data permitting to
            : reproduce it) to <gmsh at geuz.org>