[Fwd: ng-spice on solaries]


To ng-spice <ng-spice@ieee.ing.uniroma1.it>
From Manu Rouat <emmanuel.rouat@wanadoo.fr>
Date Fri, 01 Oct 1999 13:43:27 +0200
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I have received this interesting email which I forward to you.

manu


To emmanuel.rouat@wanadoo.fr
From jvercamm@roam.agfa.be (Jan Vercammen)
Date Fri, 1 Oct 1999 10:34:24 +0200
manu,

I have downloaded ng-spice 0.3 and compiled it under sun solaris. Two years 
ago
we obtained Spice3f5 from Berkeley and I compiled there version under solaris 
and
under Linux (RedHat 5.2)

The autoconfiguration tool is very nice, I have seen it once before when 
installing
GNUplot.

The actual install of ng-spice was very smooth (1hr), compared to the 
installation of
spice3f5. I had to adjust:
- src/include/spice.h --> change definition of sbrk() to match Sun's unnistd.h
- src/lib/fte/resource.c, again sbrk() and line 121 were I casted sbrk() to a 
char *

There are still many warnings, some are probably very similar to the spice3f5 
compile.
Though I have the impression there are less of them.

I have compared spice3f5 and ng-spice on some of my circuits. They behave the 
same.
Nutmeg seems the work OK, except that the background of a plot window is 
black. The
mouse functions properly: zoom and dy/dx are working OK.

As and EMC engineer I use spice allot to model two-dimensional power planes 
with lumped
models. Some of my models contain over 3000 nodes and between 6000 and 8000 
RLC 
components (with run times of 50minutes for a transient analysis on a 133MHz 
PC).

I have memory leaks (segmentation faults) on very large models, I find no 
difference
between spice3f5 and ng-spice.

For the moment I still have to compile ng-spice under Linux (at home). I 
report the
details when I have done so.

Currently I am working on my thesis for my master's degree, so I am quiet 
busy for the
moment. Nevertheless I should be free from february next year to help you out 
on some 
of these memory leaks. I could join the team, I still have to decide.

My interests are:
- removing current memory leaks
- controlled sources with build-in delays (useful for EMC modeling --> PEEC 
models)
- parallel sparse matrix solvers (threading, MPI)
- transmission lines
- IBIS to spice conversion

I have one question: who managing and coordinating ng-spice?

regards,

Jan Vercammen
agfa-geavert nv
Septestraat 27, B2650 Mortsel
Belgium
+32/3/444.62.33, fax +32/444.62.68
jvercamm@roam.agfa.be

PS. I have three spice3f5 manuals:
adding devices to spice3f, nutmeg implementation guide, front end simulator 
interface by
Thomas Quarles. They are small enough to be mailed by surface mail. 
Interested?




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