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ADEGXL global optimisation runs only 9 jobs in parallel

vamshiky

Hi,

 I am trying to use global optimsation for finding w/l of a mosfet while forcing the vgs-vth to be in some range like 100mv to 105mv.

In this setup I notice that only 9 sims are launched at a time, though the job policy which I use can take upto 100.(with adexl) and hence tales a lot of time to complete the optimisation.

 

Is there any other setting which will speed up this.

 

Thanks,

Vamshi

 

Parents

  • Hi Vamshi,

    ADE GXL's global optimization uses a parallel simulated annealing algorithm to explore the design space.  This type of algorithm can efficiently explore large multi-variable design spaces.  It sounds to me from your description that you have only a couple of variables, therefore the number of simulations needed to calculate the next area of the design space for exploration is much smaller than your maxjobs setting.

    Regards,

    TOM

Reply

  • Hi Vamshi,

    ADE GXL's global optimization uses a parallel simulated annealing algorithm to explore the design space.  This type of algorithm can efficiently explore large multi-variable design spaces.  It sounds to me from your description that you have only a couple of variables, therefore the number of simulations needed to calculate the next area of the design space for exploration is much smaller than your maxjobs setting.

    Regards,

    TOM

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