Table 1.

Summary of the computational costs for the strong scalability test, using 960 parallel cores. For each section, we report the total wall time, the wall time for each time step and the wall time relative to the total. Sections are sorted in descending order of cost

Section	Wall time [s]	Wall time per time step [s]	Relative wall time [%]
Total	379.51	–	100.0
Linear solver	226.98	0.45	71.0
Ionic model update	45.13	0.09	14.1
Initialization	33.76	–	10.6
Monodomain assembly	10.33	0.02	3.2
Other	3.55	0.01	1.1