Hi Jimmy,

In IC5033 there is now an option that can allow the
model equation evaluation to be spread over multiple
CPUs. This currently works for bsim3v3 and bsim4 models.

The options are:

multithread=on
nthread=2

(say). See "spectre -h options" for more details.

Remember that many things in a circuit simulator are
essentially sequential, so not that much can be done
in parallel - the model equations is a good candidate
though.

Regards,

Andrew.

Jimmy,

It can definitely help - it's not really a function of the type
of circuit. If you have bsim3v3 or bsim4 models, then it
will parallel up the evaluation of the model equations,
regardless of the circuit type.

Now, you have to have at least 512 (I think) devices in
the circuit - so if it is not that large, it will be disabled.

Also, because it is just paralleling up the model equation
evaluation, it won't go twice as fast with a 2 CPU
machine - but you should get some speedup (the
2 threads won't be fully utilized).

Regards,

Andrew.