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Showing posts from October, 2025

Getting a Nicer View from Your Aging (Reliability) Simulation from Assembler

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https://github.com/ananthchellappa/python/blob/master/cadence/transpose_age_CSV You're stuck with the Detail view.. when you run Reliability.. What I asked Cadence: Ideally, we would like to see results in the format Measure fresh stress aged (order not important, fresh, aged, stress also ok) out1 val1 val2 val3 etc But, this is not possible. However, if Detail Transpose worked, then it is trivial to export CSV and use Excel to get the desired view. But, this currently not possible because the stress test values are not showing And chatGPT I am getting CSV output from a tool in the following format: col1_name, col2_name, Output,col3_name, col4_name, etc name1,nameA,out_name1,something,value_name11,.. name1,nameA,out_name2,something,value_name21,... name1,nameA,out_name3,something,value_name31,... .... name1,nameA,out_nameN,something,value_nameN1,... name2,nameA,out_name1,something,value_name12,... .... name2,nameA,out_nameN,something,value_nameN2,... name3,nameB,out_name1,som...

Speeding Up Your Transient Noise Simulation in Spectre (Hint: Dyn Param : isnoisy)

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When transient noise is enabled, the simulation runs much slower. My question is, since there may be startup phases that the circuit needs to go through to arrive at the state in which the transient noise analysis is useful, is it possible to tell spectre to introduce the transient noise starting at a specific time? For example, simulation runs till 10 us. Begin transient noise at 5 us. Yes, you just use the Dynamic Parameter feature available in the Analyses form. Thank you Udit. What about the Cadence Online Support Search and Gen AI not offering up this solution when one searches for "is it possible to introduce transient noise into spectre simulation starting from certain timepoint?" Ans: Till fixed, try different wordings. In this case, "how to introduce transient noise during specific time window" *does* serve up the solution

Don't Miss Out! Spectre Version 25 Is Available

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Go to downloads.cadence.com for the latest Spectre - v25!

Checkboxes in the Reference Histories Dialog

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If you're like me and like to blow up fonts to make it easier on your eyes, you've had this problem too - the forms don't adjust to fit the non-default text. Some of the checkboxes and GUI items are accompanied by tooltips, but these three at the top aren't. So, here you are: There are three checkbox labels at the top: Use reference results Use reference netlist Use reference history for restart