Hspice error message please help

error happens when writing waveform for post

Hi, I am trying to simulate the ADC i have designed using Hspice. I have a clock running at 20Mhz. i.e a period of 50 ns. I need the simulation to run till 100 milli seconds becuase i am using a current mirror ramp generator for generating a ramp vooltage which requires that much time for producing a ramp output as i am using a 1 uf capacitor for charging.

When i try to simulate in Hspice using .Tran 1n 1m ( i ran it for 1 milli sec with a step of 1 ns) ( i tried a step of 10ns also)

it takes 4-5 hours for simulation and then it stops with an error message saying
**error** error happens when writing waveform for POST=1
time: command terminated abnormally.

Is it because of the memory problem? Can anybody please help how to solve this issue?

Thanks,
RC.

hspice terminated abnormally

How are you running the simulator? How many nodes are you saving? Are there any output logs? Is there any output data at all?

Could you run a shorter simulation, say 10ns, to see if it will run? If a short sim runs and the long sim fails that could indicate a memory issue.