[SciPy-dev] Another segfault

Nils Wagner nwagner at mecha.uni-stuttgart.de
Thu Mar 2 07:25:39 CST 2006


Hi all,

I have no idea why this test results in a segfault. Maybe its a compiler
issue ? (g77 versus gfortran)

I have installed numpy/scipy via

python setup.py config_fc --fcompiler=gnu95 install

>>> import sparse_test.py
Use minimum degree ordering on A'+A.

Program received signal SIGSEGV, Segmentation fault.
[Switching to Thread 16384 (LWP 2632)]
0x00002aaab23e50b3 in dpivotL (jcol=0, u=1, usepr=0x7fffffb2a204,
perm_r=0xa0fa40, iperm_r=0x816b50, iperm_c=0x9ffed0,
    pivrow=0x7fffffb2a210, Glu=0x9a0ac0, stat=0xffffffffab80bb68) at
dpivotL.c:120
120             perm_r[*pivrow] = jcol;
(gdb) bt
#0  0x00002aaab23e50b3 in dpivotL (jcol=0, u=1, usepr=0x7fffffb2a204,
perm_r=0xa0fa40, iperm_r=0x816b50, iperm_c=0x9ffed0,
    pivrow=0x7fffffb2a210, Glu=0x9a0ac0, stat=0xffffffffab80bb68) at
dpivotL.c:120
#1  0x00002aaab23dadd0 in dgstrf (options=<value optimized out>,
A=0x7fffffb2a330, drop_tol=<value optimized out>,
    relax=<value optimized out>, panel_size=10, etree=<value optimized
out>, work=<value optimized out>, lwork=10549824,
    perm_c=0x945350, perm_r=0xa0fa40, L=0x2aaab508c7d0,
U=0x2aaab508c7f0, stat=0x7fffffb2a310, info=0x7fffffb2a35c)
    at dgstrf.c:310
#2  0x00002aaab23bdb4b in newSciPyLUObject (A=0x7fffffb2a3f0,
diag_pivot_thresh=1, drop_tol=0, relax=1, panel_size=10,
    permc_spec=2, intype=<value optimized out>) at _superluobject.c:372
#3  0x00002aaab23bc9ba in Py_dgstrf (self=<value optimized out>,
args=<value optimized out>, keywds=<value optimized out>)
    at _dsuperlumodule.c:187
#4  0x00002aaaaac5496a in PyEval_EvalFrame (f=0xace630) at ceval.c:3547
#5  0x00002aaaaac55404 in PyEval_EvalCodeEx (co=0x2aaaae7e01f0,
globals=<value optimized out>,
    locals=<value optimized out>, args=0x5, argcount=1, kws=0x506698,
kwcount=0, defs=0x2aaaae7cef08, defcount=5,
    closure=0x0) at ceval.c:2730
#6  0x00002aaaaac53aba in PyEval_EvalFrame (f=0x506500) at ceval.c:3640
#7  0x00002aaaaac55404 in PyEval_EvalCodeEx (co=0x2aaaaab23b90,
globals=<value optimized out>,
    locals=<value optimized out>, args=0x0, argcount=0, kws=0x0,
kwcount=0, defs=0x0, defcount=0, closure=0x0)
    at ceval.c:2730
#8  0x00002aaaaac556d2 in PyEval_EvalCode (co=<value optimized out>,
globals=<value optimized out>,
    locals=<value optimized out>) at ceval.c:484
#9  0x00002aaaaac67cc7 in PyImport_ExecCodeModuleEx (name=0x7fffffb2b370
"sparse_test", co=0x2aaaaab23b90,
    pathname=<value optimized out>) at import.c:619
#10 0x00002aaaaac68e3d in load_source_module (name=0x7fffffb2b370
"sparse_test", pathname=0x7fffffb2aeb0 "sparse_test.py",
    fp=<value optimized out>) at import.c:893
#11 0x00002aaaaac6a854 in import_submodule (mod=0x2aaaaadbee30,
subname=0x7fffffb2b370 "sparse_test",
    fullname=0x7fffffb2b370 "sparse_test") at import.c:2250
#12 0x00002aaaaac6aa72 in load_next (mod=0x2aaaaadbee30,
altmod=0x2aaaaadbee30, p_name=<value optimized out>,
    buf=0x7fffffb2b370 "sparse_test", p_buflen=0x7fffffb2b78c) at
import.c:2070
#13 0x00002aaaaac6af07 in PyImport_ImportModuleEx (name=0x2aaaaaae0360
"\002", globals=0x2aaaaaae0384,
    locals=<value optimized out>, fromlist=0x2aaaaadbee30) at import.c:1905
#14 0x00002aaaaac47d73 in builtin___import__ (self=<value optimized
out>, args=<value optimized out>) at bltinmodule.c:45

Any suggestion how to resolve this problem ?

Nils

-------------- next part --------------
A non-text attachment was scrubbed...
Name: sparse_test.py
Type: text/x-python
Size: 320 bytes
Desc: not available
Url : http://projects.scipy.org/pipermail/scipy-dev/attachments/20060302/1bf065a8/attachment.py 


More information about the Scipy-dev mailing list