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lovseed
(Stranger )
12/11/07 05:26 AM
Re: Analog FastSPICE [re: djepayne]Report this article as Inappropriate to us !!!Login to Reply

sounds very strong! To speed up the simulation, usually the engine need to shorten the time of model evaluation,element stamping , matrix solving, and reduce reverse time points. For large circuits, non-convergence with a "time step too small" shape is definitely a problem if you use BSIM models.

 Model evaluation - they need to solve the same model evaluation equations.

Element stamping - even multi-threding only provide 5%-25% improvement.

Matrix Solving - Can be improved if matrix partition used, but I donot see that much room.

Reversed timepoints - Need good time-step control algorithms.

So I am doubting their 5-10x with SPICE accuracy. The only big improvement may be in matrix solving but as obsered, the matrx solving is not the major performance barrier, the model evaluation is the major barrier.

 

Edited by lovseed on 12/11/07 05:31 AM.




Entire thread
SubjectPosted byPosted on
*Analog FastSPICE *DELETED* djepayne   05/15/07 05:25 PM
.*Re: Analog FastSPICE lovseed   12/11/07 05:26 AM
.*Re: Analog FastSPICE estrada_pi   12/13/07 10:16 PM
.*Re: Analog FastSPICE estrada_pi   05/15/07 11:03 PM
.*Re: Analog FastSPICE djepayne   05/16/07 11:02 AM
.*Re: Analog FastSPICE estrada_pi   05/16/07 10:37 PM
.*Re: Analog FastSPICE djepayne   05/16/07 11:42 PM
.*Re: Analog FastSPICE estrada_pi   05/24/07 10:32 PM
.*Re: Analog FastSPICE RJC   07/10/07 04:54 AM
.*Re: Analog FastSPICE estrada_pi   07/12/07 11:41 PM
.*Re: Analog FastSPICE FastSpice   07/13/07 08:51 PM
.*Re: Analog FastSPICE estrada_pi   07/14/07 11:46 PM
.*Re: Analog FastSPICE RJC   07/13/07 07:49 AM
.*Re: Analog FastSPICE estrada_pi   07/14/07 11:45 PM
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