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jolia
Joined: 17 Aug 2006
Posts: 33
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 23 Aug 2006 4:41 how to improve accuracy |
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hello everyone,
I want to improve the accuracy of simulation in spectre(cadence),but I don't know how to realize it ,please help me ! thank you 
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jfyan
Joined: 03 May 2006
Posts: 199
Helped: 22
Location: shanghai,china
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| 23 Aug 2006 5:33 Re: how to improve accuracy |
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| jolia wrote: |
hello everyone,
I want to improve the accuracy of simulation in spectre(cadence),but I don't know how to realize it ,please help me ! thank you |
hi,
i remember that in analog design environment window, you can find the simulation menu, click it and you will find options --> analog,click it, and you can change the simulation accuracy by reltol and vabstol like in hspice.
may it help.
jeff.yan
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qutang
Joined: 25 Oct 2004
Posts: 315
Helped: 6
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| 23 Aug 2006 5:45 how to improve accuracy |
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| but more accurate more simulate time.
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jolia
Joined: 17 Aug 2006
Posts: 33
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| 23 Aug 2006 6:13 Re: how to improve accuracy |
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| but how to change the reltol,vabstol,these two parameter abey some law ?
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Teddy
Joined: 15 Sep 2004
Posts: 281
Helped: 38
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| 23 Aug 2006 6:26 Re: how to improve accuracy |
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simpliest answer is - let say you run transient sim. Then you can choose between conservative, moderate and one more which I forget how they name it.
So if you choose between them and then in analog options look at reltol abstol how it is changed and from there you will see how to change those if you want to increase/decrease accuracy.
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pk3316
Joined: 30 Sep 2005
Posts: 47
Helped: 2
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| 23 Aug 2006 14:36 how to improve accuracy |
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| if you want to use the more accurate as default, you can define them in cdsinit file
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jolia
Joined: 17 Aug 2006
Posts: 33
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| 24 Aug 2006 2:52 Re: how to improve accuracy |
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where can I find cdsinit file? I have found it in cadence documentation,but can't find
Added after 1 minutes:
to improve accuracy,can gmin help?:|thanks!
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renwl
Joined: 26 Apr 2004
Posts: 455
Helped: 23
Location: shanghai,china
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| 24 Aug 2006 3:33 Re: how to improve accuracy |
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| jolia wrote: |
where can I find cdsinit file? I have found it in cadence documentation,but can't find
Added after 1 minutes:
to improve accuracy,can gmin help?:|thanks! |
use "ls -a" , the file name is .cdsinit
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chenjia
Joined: 16 Apr 2005
Posts: 68
Helped: 5
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| 26 Aug 2006 6:42 how to improve accuracy |
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| You also can improve the accuray by setting the simulation step.
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