Re: [sparta-users] [EXTERNAL] SPARTA issue

[Moore, S. <st...@sa...>]

You can try the changes in https://github.com/sparta/sparta/pull/244, there is a high likelihood the issue will go away with that branch, but two (obscure) regression tests are still failing with those change, which is why that branch hasn't been merged yet.

These other issues on Github are probably all related:

https://github.com/sparta/sparta/issues/218
https://github.com/sparta/sparta/issues/203
https://github.com/sparta/sparta/issues/137
https://github.com/sparta/sparta/issues/7


HTH,

Stan

________________________________
From: Natalia Hladczuk <N.A...@tu...>
Sent: Monday, October 4, 2021 12:10 PM
To: spa...@li... <spa...@li...>
Subject: [EXTERNAL] [sparta-users] SPARTA issue


Dear all,


I am struggling with the exact same error as Zuheyr (see the post below):


Created orthogonal box = (-3 -3 -3) to (3 3 3)

Created 1000 child grid cells

  parent cells = 1

  CPU time = 0.00268237 secs

  create/ghost percent = 59.656 40.344

Reading surface file ...

  11689 points

  23402 triangles

  -1.5996 1.56995 xlo xhi

  -0.972 0.972 ylo yhi

  -0.489699 0.993697 zlo zhi

  1e-06 min triangle edge length

  1.065e-10 min triangle area

  50 = cells with surfs

  26245 = total surfs in all grid cells

  2473 = max surfs in one grid cell

  1.66667e-06 = min surf-size/cell-size ratio

  0 0 = number of pushed cells

  50 0 = cells overlapping surfs, overlap cells with unmarked corner pts

ERROR: Surface check failed with 3 points on triangles (../surf.cpp:1559)



Interestingly, while changing the grid resolution to much denser, the error changes to the following one:


Created orthogonal box = (-3 -3 -3) to (3 3 3)

Created 1000000 child grid cells

(…)

Cut3d failed in cell ID: 534956

  parent 0 level 0: NxNyNz 100 100 100: child 534956 55 49 53

  lo corner 0.3 -0.06 0.18

  hi corner 0.36 0 0.24

  # of surfs = 150 out of 23402

  surfs: (<surf listed>)

ERROR on proc 15: LP: More than one positive area with a negative area (../cut3d.cpp:658)



Could you provide me some more information on what exactly those errors mean and how to tackle this problem?


Many thanks in advance,
Natalia