8 May
2005
8 May
'05
11:38 p.m.
Daniel Fischer wrote:
One question: the energy of the system should be constant - that little physics I know. What I don't know is whether the change in energy in this simulation is within usual, reasonable bounds or not. If not, is it due to a too long time interval or should one use a more sophisticated algorithm?
The change in energy is from round-off error caused by floating point arithmetic. For this particular test, the shootout requires everyone to use the same algorithm. So the error is expected. Greg Buchholz