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OutputTiming gives a summary of time consuming of the simulation including the simulation speed measured in how many grids* timesteps can be done per second.

for example

[ Timing summary: 5 timesteps 20507 node.timestep/s ]

means it is the 5th timestep, currently 20507 grids*timestep can be done in one second. If your simulation scale is 40 000 grids (static) and 100 timesteps, the estimated simulation time is <math>$\frac{40 000 grids \times 100 steps}{20507 grid.timestep/s}=195s$</math> .

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