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Re: [Gnucap-devel] Plugin support
From: |
al davis |
Subject: |
Re: [Gnucap-devel] Plugin support |
Date: |
Mon, 12 May 2008 15:51:07 -0400 |
User-agent: |
KMail/1.9.9 |
On Sunday 11 May 2008, Jesse Forsmann wrote:
> I'm thinking of possible monte carlo support. Can this be
> done via the new supported plugin interface?
>
> Where can I get a good example to get me started?
First, what do you want the user interface to look like?
In the source, most of the c*, d*, lang*, s*, bm* can be used as
plugins. Just compile with "g++ -fPIC -shared foo.cc". Then
you can "load ./a.out".
Look in "Make1" .. The files explicitly listed in "RAW_SRCS"
are part of the core. The files listed in the groups
like "MODELS" or "D_SRCS" are really designed as plugins. You
can leave them out if you want to.
For monte carlo, there is a need to vary the parameters. Maybe
something should be built-in, but I am not sure what. I
suppose you could use expressions as component values, and your
MC plugin could randomize the values.
Something like:
R123 (a b) {10k*(1+mc1)}
.. where mc1 is the value you tweek to adjust the value.
.param mc1=0
.op
.param mc1=.1
.op
.param mc1=-.1
.op
and so on.
Make something based on a random number generator to make values
for mc1.
What I would like to do eventually is to make a function that
will take care of this.
R123 (a b) {10k*tolerance(.1,gaussian,15)}
... which says that it varies by +/- .1*value, has gaussian
distribution, and is in group 15. "Group 15" is a way to
identify components that track each other.
Whatever the syntax is, it needs to work without changing any of
the models.