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preserve instance in SpectreX?

Ponien Lin over 4 years ago

Hi,

I am using pkg model with small RLGC values. The waveform looks incorrect, guess it's due to circuit reduction.

"preserve_inst" option is ignored in SpectreX.

Is there any method to preserve instance in SpectreX?

ShawnLogan over 4 years ago

Dear Ponien Lin,

Yes. Please access the High Performance Simulation GUI dialog box and check the Advanced Options radio button an enter the option as shown in Figure 1.

Shawn

Figure 1
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FormerMember over 4 years ago in reply to ShawnLogan
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Andrew Beckett over 4 years ago in reply to FormerMember

I’d also suggest that you contact customer support. Our goal is to make the Spectre X technology as out of the box as possible, and turning off the instance pruning/combination is potentially throwing away an important performance gain (turning it on selectively for particular components is not so bad, but preserving all instances is something that you don’t want to do all the time; it shouldn’t be necessary)

Andrew
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Ponien Lin over 4 years ago in reply to Andrew Beckett

Thanks Shawn and Andrew. It works.
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ShawnLogan over 4 years ago in reply to Ponien Lin

Dear Ponien,

Great! Thank you for letting us know Ponien!

Shawn
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