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How to close a netlist in Ocean

lchen
I’m running an ocean script that runs multiple PVT corners in a nested foreach loop (see sample below). It runs all the PVT corners in parallel using LSF.
The problem I’m having is that at each corner, the run generates a netlist. With post-layout extraction, the netlist could be ~100M, and soon enough, Ocean runs out of memory.
I want to ask if there’s a simple command I could use to close the netlist before proceeding to the next iteration of the loop. That way Ocean doesn’t run out of memory just submitting jobs to the LSF queue.
Pseudo-code:
-------------------------------- 
foreach(corner cornerlist
foreach(vdd vddlist
foreach(temp temlist
…
…
run(?jobName job ?drmsCmd bsub_cmd)
…
…
); end foreach templist
); end foreach vddlist
); end foreach model 
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