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Re: [Gnucap-devel] method and error (was: transient -- "trace" default)
From: |
al davis |
Subject: |
Re: [Gnucap-devel] method and error (was: transient -- "trace" default) |
Date: |
Mon, 13 Jan 2014 01:45:00 -0500 |
User-agent: |
KMail/1.13.7 (Linux/3.2.0-4-amd64; KDE/4.8.4; x86_64; ; ) |
On Saturday 11 January 2014, Felix Salfelder wrote:
> > On the surface we only care about h small. But really that
> > is not so. There are times when we want to allow a large
> > time step and HIDE the error with the intent of ignoring
> > it.
>
> this hasnt occurred to me yet. i would have tried to replace
> the netlist with a smaller/faster one.
If you are just doing small experimental circuits you can do
that. For large circuits, probably not. The small caps we wish
to ignore are mostly parasitic caps in device models. Some of
the large circuits are automatically generated from layouts.
> the pulse patch makes things worse for me. the number of
> iterations increases from ~3000 to ~5000. i think that is
> because the patch moves the events from the discontinuities,
> where my mechanism requires them.
If you want exact timing, use the event queue, not the
"ambiguous_event" mechanism.
Probably bm_pulse should use the event queue instead.
When there is a discontinuity, you need an event just before and
just after. With the event queue, the whole list can be built
in advance. With the ambiguous_event mechanism, it's one step
at a time.
- Re: [Gnucap-devel] transient -- "trace" default, (continued)
- Re: [Gnucap-devel] transient -- "trace" default, al davis, 2014/01/07
- [Gnucap-devel] method and error (was: transient -- "trace" default), Felix Salfelder, 2014/01/07
- Re: [Gnucap-devel] method and error (was: transient -- "trace" default), al davis, 2014/01/11
- Re: [Gnucap-devel] method and error (was: transient -- "trace" default), Felix Salfelder, 2014/01/11
- Re: [Gnucap-devel] method and error (was: transient -- "trace" default), al davis, 2014/01/12
- Re: [Gnucap-devel] method and error (was: transient -- "trace" default), Felix Salfelder, 2014/01/12
- [Gnucap-devel] discontinuities. was: traces, Felix Salfelder, 2014/01/13
- Re: [Gnucap-devel] discontinuities. was: traces, al davis, 2014/01/15
- Re: [Gnucap-devel] discontinuities, Felix Salfelder, 2014/01/16
- Re: [Gnucap-devel] discontinuities, al davis, 2014/01/23
- Re: [Gnucap-devel] method and error (was: transient -- "trace" default),
al davis <=
- Re: [Gnucap-devel] method and error (was: transient -- "trace" default), Felix Salfelder, 2014/01/16