CGAL users discussion list

[Marc Klopfenstein <>]

Hi Laurent,

*My configuration:*

Windows XP SP3
Visual Studio 8 C++ 2005
3 Go RAM
2046Mo virtual memory
I use the latest version of Taucs.

*Do you get the same error in Debug and Release mode?*
NO, in release mode I have an another Taucs problem (see log).

CONSOL OUTPUT

Number of point: 465251 (own cout)
Creates Poisson triangulation…
Creates Poisson triangulation: 9.844 seconds, 175Mb allocates
Delaunay refinement…
Calls
Delaunay_refinement(radius_edge_ratio_bound=2.500000,cell_radius_bound=0.119956,
max_vertices= 10000000, enlarge_ration= 1.500000)
Calls poisson_refine_triangulation()
        176Mb allocated 
        Creates queue
        Max allocation in Delaunay refinement = 387Mb
        233Mb allocated
End of poisson_refine_triangulation()
End of Delaunay_refinement()
Delaunay refinement: added 258327 Steiner points, 197.889  seconds, 233 Mb
allocated
Solve Poisson equation with normalized divergence…
Calls solve_poisson()
        233 Mb allocated
        Creates matrix…
Creates matrix: done (119.55)
        359Mb allocated
        Solve sparse linear system…
Error: cannot solve Poisson equation

TAUCS LOG

taucs_linsolve: preparing to factor
taucs_linsolve: ordering (llt=1, lu=0, ordering=metis)
taucs_linsolve: ordering time 9.61e+000 seconds (9.55e+000 seconds CPU time)
taucs_linsolve: starting LLT factorization
taucs_linsolve: pre-factorization permuting of A
taucs_linsolve: starting IC LLT factorization
taucs_linsolve: starting IC LLT MF factorization
                Elimination tree depth is 6836
                Symbolic Analysis of LL^T: 1.57e+008 nonzeros, 2.11e+011 
flops, 1.42e+009
bytes in L
                Relaxed  Analysis of LL^T: 1.73e+008 nonzeros, 2.16e+011 
flops, 1.61e+009
bytes in L
                Symbolic Analysis            =      5.781 seconds (5.766 cpu)
                Supernodal Multifrontal LL^T =     70.875 seconds (70.719 cpu)
taucs_factor: factorization failed
taucs_linsolve: an error occured, releasing resources and bailing out
        Solving Failed

*
Do you get the same error with other point sets?*
Yes we have the same error with other point sets. The reconstruction works
with less then 250 000 points, above this limitation I have the same problem
and the same differences between Release and Debug 

Best regards,
Marc Klopfenstein


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