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Simulators >> Circuit Simulators >> Stitchin results of two transient simulations
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Message started by sutapanaki on Sep 3^rd, 2017, 9:34pm

Title: Stitchin results of two transient simulations
Post by sutapanaki on Sep 3^rd, 2017, 9:34pm

Hi,

This might be a simple question for those who are skilled in spectre but it seems I can't figure out how to do the following. I want to run two transient simulation, the second one starting from a point in time where the first simulation finished or perhaps at a point of time somewhere during the run of the first simulation. Then I would like to stitch together the results of the first and second simulation. I hope this is possible and going from the first to the second simulation can be done quite seamlessly.

Thanks for your help.

Title: Re: Stitchin results of two transient simulations
Post by sheldon on Sep 4^th, 2017, 9:01pm

Sutapanaki,

This is an issue for ViVA not Spectre. There are multiple options for
displaying the results. Making some assumptions based on your
comments, you did not use save/restart. So both simulations start
from time 0. In that case you have a couple of calculator functions
available to you: clip() and lshift().
clip() allows you to select the data to be plotted
lshift() allows you to shift the data along the time axis

These should provide you what you need.

Sheldon

Title: Re: Stitchin results of two transient simulations
Post by Andrew Beckett on Sep 9^th, 2017, 12:13am

The same question was posted on the Cadence Community Forums - so I answered it there - this gives a way of stitching the results together in ViVA, plus explains a bit about save and restore.

https://community.cadence.com/cadence_technology_forums/f/38/t/37700

Andrew