[SKDinfinity]

Hi Everyone !!

Can anyone tell me, if there is a way to estimate the approx. total simulation time (actual time taken by the computer NOT the flow time in transient case) in advance before running the simulation ??
Actually it will be helpful if I could know the expected time so that I can schedule my simulation accordingly.

Thanks.

[`e`]

Run your simulation for a few time steps and then predict how long the complete simulation would take. For example, say, run for 10 time steps out of 1,000 time steps. Then multiply the time taken by 100 to estimate the overall time. The CPU time can be shown via Parallel > System > CPU info.

Note: the term wall clock time (WCT) is used to describe the time taken by the computer (regardless of number of processes and simulation time).

[SKDinfinity]

Actually I was thinking, a udf could be developed to calculate the current computer time since the sim has started and print that after every time step in the console and also the estimated time of completion as you have described above.

But I am not good at this udf programming, I have just started learning, if you kindly help me with that, it will be great.

Thanks,

[`e`]

You could use the clock function to calculate the CPU time (save the start time as a global variable and only initialise on the first time step). Use the DEFINE_EXECUTE_AT_END macro for calculating the current WCT at the end of each time step and print the estimate to the screen with the Message function. Note: you'll need to enter the total number of time steps either within the UDF or use rp-variables (Scheme coding).

The method I mentioned above is recommended for estimating the total WCT for your simulations but if you're keen on programming this UDF then hopefully the above instructions along with the UDF manual is useful.