Internal:Metric Adaptive CDT3D

Preliminary data

	# Tetrahedra	# Vertices	Isotropic Boundary Refinement (MMGS)	Boundary Recovery	Mesh Refinement						Total Time (sec)	Memory (GB)
					#Iterations	Par. Deactivation	Par. Vertex Creation	Vertex Insertion	Partition	Par. Reconnection
case 1 (x8)	14,094,106	2,390,948	3.04	4.93	78	7.42	12.38	5.62	82.91	238.17	352.66	6.1
case 2 (x10)	26,859,966	4,546,172	3.78	11.64	80	14.69	25.17	9.85	154.10	437.97	655.05	10.4
case 3 (x20)	209,865,483	35,344,507	25.64	169.53	276	311.71	381.31	74.69	3781.33	9321.10	14045.37	74.31

Notes

• using cube and Polar-1 metric from [UGAWG https://github.com/UGAWG/adapt-benchmarks/tree/master/cube-cylinder#polar-1]
• No boundary adaptation,due to the increasing prepossessing time and the difficulty to recover the boundary.
• Grouping (that enhances significantly performance) is disabled due to Delaunay criterion issues.
• The experiments performed on a DELL workstation with Linux Red Hat Enterprise, 24 hardware cores Intel® Xeon® CPU E5-2697v2@2.70 GHz, and 757 GB RAM
• Using 24+24 (HyperThreading) threads
• parameters --met=1 --meval=2 --mrecm2=1 --mrec4=1 --nadapt=0 --mpp=2 --qstatr=1 --outmesh=${NAME}.meshb --ndfs=0 --nthreads=24 --nbuckets=640 --nthreadsaf=24 --nbucketsaf=640 --blockmul=500000 --nqual=0 --nminpts=30 --ordt=1 --pardeact=1 --mdse=0

TO DO (shorterm)

• Try enabling sorting ( sortp)

TO DO (long term)

• Parallel sorting ( _gnu_parallel ) http://epic-alfa.kavli.tudelft.nl/share/doc/libstdc++-docs-4.4.7/html/api/a00865_source.html#l00074
• Replace spin locks in vertex insertion
• Rollback treatment
• investigate insphere and grouping mrecm2=0
• smoothing : Tetrahedral Mesh Improvement Using Swapping and Smoothing, Lori A. Freitag and Carl Ollivier-Gooch