restarting a simulation

[dineshkumarreddyg36]

I wish to restart a simulation. There are some restart files written, say the restart file name is 'restart0003000.info'. I want to restart my simulation from here. what value should I have to give for the variable 'irestart' in the input file?

[mathrack]

Hello,

I think the restart is not the restart0003000.info file but the restart0003000 one.

If the last time step of your simulation was ilast = 3000. Then you should restart with ifirst = 3001 and irestart = 1.

[dineshkumarreddyg36]

okay, thank you @mathrack

[pbartholomew08]

@mathrack is correct, the restart data is stored in the checkpoint file, to avoid filling a file quota with (potentially large) checkpoint files the checkpoint is overwritten, there is no checkpoint history. Every time it is overwritten a new restartXXXXX.info is written to describe the file.

You can only restart from your latest checkpoint time, if that was at t=3000 you should restart at time t=3001 using ifirst=3001 and irestart=1

[dineshkumarreddyg36]

got it, thank you @pbartholomew08