Peformance test - Van Leer flux vector splitting

• MUSCL 2nd order
• 1st order dimensional splitting

Cartesian

• 178 time steps (The Van Leer FVS has a CFL condition below 1. This is considered in the time steering by an appropriate reduction factor.)
• 535 ghost cell synchronizations, GhostCells=2
• TimeControl: StepMode=1

Task	P=16		P=32		P=64
	s	%	s	%	s	%
Integration	843	76.3	444	84.3	214	61.5
Int. - parallel diff.	94	8.5	67	11.0	70	20.2
Boundary setting	172	15.0	93	15.3	64	18.4
Output	44	3.9	39	6.4	42	12.1
Misc.	45	4.1	31	5.1	27	7.8
Total / Grind time	1104	3.7e-7	608	2.0e-7	347	1.2e-7

Ghost-fluid method

• 183 time steps
• 1287 ghost cell synchronizations
• GhostCells=3, BoundaryWidth=1
• TimeControl: StepMode=1

Task	P=16		P=32		P=64
	s	%	s	%	s	%
Integration	993	36.1	491	33.4	241	30.6
Int. - parallel diff.	130	4.7	75	5.1	66	8.4
Boundary setting	637	23.2	380	25.9	218	27.7
GFM Find cells	316	11.5	158	10.8	79	10.0
GFM Interpolation	552	20.1	277	18.8	138	17.6
GFM Overhead	74	2.7	37	2.5	19	2.4
GFM Calculate	59	2.1	29	2.0	14	1.8
GFM - parallel diff.	227	8.3	135	9.2	73	9.3
Output	47	1.7	48	3.2	48	6.1
Misc.	66	2.4	48	3.2	28	3.6
Total / Grind time	2748	9.0e-7	1470	4.8e-7	787	2.6e-7

• GhostCells=6, BoundaryWidth=2
• TimeControl: StepMode=1

Task	P=16		P=32		P=64
	s	%	s	%	s	%
Integration	1464	27.9	736	25.6	382	24.5
Int. - parallel diff.	122	2.3	112	3.9	205	13.2
Boundary setting	1488	28.4	968	33.7	507	32.6
GFM Find cells	592	11.3	302	10.5	156	10.0
GFM Interpolation	1099	21.0	555	19.3	286	18.4
GFM Overhead	140	2.7	71	2.5	37	2.4
GFM Calculate	131	2.1	64	2.2	33	2.1
GFM - parallel diff.	623	11.9	373	13.0	195	12.5
Output	95	1.7	88	3.1	76	4.9
Misc.	142	2.4	89	3.1	55	3.6
Total / Grind time	5240	1.7e-6	2879	9.4e-7	1556	5.1e-7

-- RalfDeiterding - 17 Dec 2007