Re: [sv-ac] reminder to vote on mantis 1550

Hi Arturo,

I have a question regarding the following paragraph:

>I don't believe it's possible for a simulator to accurately model the
>effect of powering up a system, which is what we usually refer to as
>time 0 setup or initialization. By its very nature, this is an analog
>process that cannot take place in zero time. I believe that attempting
>to force a deterministic simulation model, which is not possible in the
>real system, may conceal actual bugs and lull engineers into a false
>sense of security. In order to avoid such situations, a simulator should
>be conservative - without being overtly pessimistic. In this case,
>conservative should cause designers to not rely on pre-initialized nets
>- consider that in reality even the power supplies may be changing at
>time 0.
>  
>
When you say that the initial value should be non-deterministic, do you 
mean they sholud be
selected randomly (e.g. based on the seed)? Or do you mean that the 
standard should not
specify the values and they should be tool depended?

I think that a tool depended solution is worst than defining 
deterministic values, because unless
you run the simulation on several different simulators, you still see 
only one non-realistic value,
only now you do not have any control on it.

Doron

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