how to continue simulation without overwriting the raw file?

there are cases that a simulation is killed.
raw file and log files produced..

in case i want to continue the simulation at the last point? (without overwriting the created raw file)
what should be the steps to this idea?

i read about the +checkpoint and +recover
i tried adding parameter cktperiod to my transient simulation to create recovery files (.ckpt extension)
::: my analysis statement : tran timesweep stop=100u errpreset=conservative ckptperiod=1
::: in my working directory
::: .spe ---> my stimulus file
::: .lis ---> my simulation log file

workingDirectory>ls
test1.spe test1.lis test1.raw test1.raw.timesweep.ckpt

::: the .ckpt file was produced because of the ckptperiod parameter
::: i tried to use recover

workingDirectory>spectre +recover test1.spe > test1.lis


::: but after the simulation, the raw is overwritten
and it started at the last checkpoint

want i want is that the simulation is continued from the present raw file
simply appending data to the killed simulation..

what i got is simply the solution at the start sweep of the simulation.
please help me

Re: how to continue simulation without overwriting the raw f

i will say the best solution is copy the psf/raw dir with another name psf_1 like that so i doest cause any problem and you still have the previous waveform's

Re: how to continue simulation without overwriting the raw f

JVNPAVANKUMAR said:

i will say the best solution is copy the psf/raw dir with another name psf_1 like that so i doest cause any problem and you still have the previous waveform's

Click to expand...

No, this doesn't help.
What tigrex needs is to continue the simulation, not just to keep the old waveform.