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Simulators >> Circuit Simulators >> putting a simulation on PAUSE with Cadence
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Message started by vivkr on Feb 22^nd, 2008, 7:19am

Title: putting a simulation on PAUSE with Cadence
Post by vivkr on Feb 22^nd, 2008, 7:19am

Hi,

Is there any way to put a simulation on hold without actually stopping it entirely when using Spectre/Ultrasim? This is a feature one sees so commonly in
digital simulators and is sometimes of great interest. The only ways I can think of are:

1. Write checkpoint files at regular intervals. Stop simulation and restart it from last checkpoint.
2. Hang the entire ICFB job with a kill -STOP and resume it later on. However, viewing results requires
opening a separate ADE session. Also you use an extra license even though your simulation is idling.

Is Cadence planning to add this feature to any future versions?

Vivek

Title: Re: putting a simulation on PAUSE with Cadence
Post by John O Donovan on Feb 26^th, 2008, 9:27am

How about pausing the simulation process using "kill -STOP" and then resuming it later. With Spectre, when it gets the STOP signal, it will return it's licenses and then retrieve then when it get the CONT signal. This is normally used in an LSF flow where a higher priority jobs needs to get a license, but none is available.

John