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If you need to simulate more devices of the same kind in parallel, you can use the m (often called parallel multiplier) option which is available for all instances except transmission lines and sources (both independent and controlled).
The parallel multiplier is implemented by multiplying by the value of m the element's matrix stamp, thus it cannot be used to accurately simulate larger devices in integrated circuits.
The netlist below show how to correctly use the parallel multiplier:
Multiple devices
d1 2 0 mydiode m=10
d01 1 0 mydiode
d02 1 0 mydiode
d03 1 0 mydiode
d04 1 0 mydiode
d05 1 0 mydiode
d06 1 0 mydiode
d07 1 0 mydiode
d08 1 0 mydiode
d09 1 0 mydiode
d10 1 0 mydiode
...
The d1 instance connected between nodes 2 and 0 is equivalent
to the parallel d01-d10 connected between 1 and 0.