Table 2. Runtime using M CPUs (rows) of which N CPUs (columns) are assigned to the likelihood computation. Here we show the results of the Muroidea dataset.

M∖N	1	2	4	8	16	32	64
1	329,246	–	–	–	–	–	–
2	171,797	*	–	–	–	–	–
4	92,858	92,212	90,432	–	–	–	–
8	52,329	51,072	50,244	53,411	–	–	–
16	28,248	26,426	26,792	27,573	29,297	–	–
32	15,418	14,423	14,126	14,599	15,371	18,450	–
64	9,365	8,234	7,705	7,649	8173	9,641	18,272

Notes.

^*Runs using M = 2 CPUs with N = 2 CPUs per likelihood did not finish within the wall-time provided by XSEDE.