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Re: [igraph] error message -> crash.

From: Figa Pelosa
Subject: Re: [igraph] error message -> crash.
Date: Fri, 14 Aug 2009 15:29:17 +0000 (GMT)

it's not a very "small" graph, since it has 120 nodes and 7000 edges :(
do you want me to send it anyway?
I've run my algorithm on 2 different machines (on the same graph of course) and 
the crash happened only in one of them..

I'd also like to ask you another question:

I installed igraph on a linux machine where I hadn't root access. when I call 
"from igraph import *" I get the following error:
traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File "igraph/__init__.py", line 30, in <module>
    from igraph.core import *
ImportError: No module named core

why? this is what I did..

1) installed python2.5 locally (python2.3 did not allow me to run igraph's 
setup.py, complaining with "ImportError: No module named subprocess"

2) compiled the C igraph library in my home, using "./configure" and "make"

3) I called:
python setup.py build_ext -I /home/figa/igraph_C/include/
and I got this error:

In file included from src/edgeobject.h:28,
                 from src/edgeobject.c:26:
src/graphobject.h:28:27: igraph/igraph.h: No such file or directory

4) I then created a directory called /home/figa/igraph_C/include/igraph
and copied there everything there was in /home/figa/igraph_C/include ..now it 

5) I called:
python setup.py build
and everything worked

6) I called:
python setup.py install --home /home/figa/
and got no complains

7) I've run:
export PYTHONPATH=$PYTHONPATH:/home/rugwn140/crippa/lib/python/
and launched python

8) when I run "from igraph import *"
it says:
raceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File "igraph/__init__.py", line 30, in <module>
    from igraph.core import *
ImportError: No module named core

please help me, I'm getting mad..

--- Gio 13/8/09, Tamas Nepusz <address@hidden> ha scritto:

> Da: Tamas Nepusz <address@hidden>
> Oggetto: Re: [igraph] error message -> crash.
> A: "Help for igraph users" <address@hidden>
> Data: Giovedì 13 agosto 2009, 17:54
> Hi Figa,
> > I'm having this error:
> > python: vector.pmt:763: igraph_vector_resize:
> Assertion `v->stor_begin != ((void *)0)' failed.
> > Aborted [...]
> > What could it be? Is a problem with my graph or a
> bug?
> I would say it's a bug as this shouldn't happen with any
> well-behaved library ;) However, I cannot reproduce the bug
> on randomly generated graphs so I'd appreciate if you could
> send me a small graph that reproduces the error. (You can
> send it to my private address).
> --Tamas
> _______________________________________________
> igraph-help mailing list
> address@hidden
> http://lists.nongnu.org/mailman/listinfo/igraph-help

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