Finite Element Assembly Using an Embedded Domain Specific Language

Table 4

Assembly times for each step in Chorin’s method, compared between our Proto expressions and DOLFIN. Relative is the DOLFIN timing in multiples of the Proto timing. Wall times are in seconds.

	Dummy matrix			Epetra matrix
	Proto	DOLFIN		Proto	DOLFIN
	Wall	Wall	Relative	Wall	Wall	Relative
Aux. matrix	4.33	10.15	2.34	7.17	17.98	2.51
matrix	0.28	0.19	0.67	0.53	0.75	1.42
Corr. matrix	2.38	0.22	0.09	5.23	8.09	1.55
Aux. RHS	3.12	1.17	0.375	3.18	2.32	0.73
RHS	0.85	0.40	0.47	0.86	0.85	0.99
Corr. RHS	1.23	0.35	0.28	1.26	1.59	1.26