#11674: np.dot of two numeric matrices segfaults sage.
------------------------------+---------------------------------------------
Reporter: mister.wardrop | Owner: jason, jkantor
Type: defect | Status: new
Priority: blocker | Milestone: sage-4.7.1
Component: numerical | Keywords: ATLAS segfault matrix numpy
Work_issues: | Upstream: N/A
Reviewer: | Author:
Merged: | Dependencies:
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Comment(by leif):
With `sage -gdb` I get:
{{{
...
Reading symbols from
/tmp/sage-4.7.1.rc2-fat-x86_64-Linux/local/bin/python...done.
[Thread debugging using libthread_db enabled]
Python 2.6.4 (r264, Aug 11 2011, 10:32:43)
[GCC 4.4.3] on linux2
Type "help", "copyright", "credits" or "license" for more information.
Traceback (most recent call last):
File "/usr/lib/gcc/x86_64-pc-linux-
gnu/4.5.1/libstdc++.so.6.0.14-gdb.py", line 59, in <module>
from libstdcxx.v6.printers import register_libstdcxx_printers
ImportError: No module named libstdcxx.v6.printers
sage: import numpy as np
sage: ms = np.load("/home/leif/Sage/tmp/matrices.npy")
sage: time np.dot(ms[0],ms[1])
[New Thread 0x7fffc6863700 (LWP 26321)]
Program received signal SIGSEGV, Segmentation fault.
[Switching to Thread 0x7fffc6863700 (LWP 26321)]
0x00007fffecae3bcd in ATL_dJIK40x40x40TN40x40x0_a1_b0 ()
from /tmp/sage-4.7.1.rc2-fat-x86_64-Linux/local/lib/libatlas.so
(gdb) bt
#0 0x00007fffecae3bcd in ATL_dJIK40x40x40TN40x40x0_a1_b0 ()
from /tmp/sage-4.7.1.rc2-fat-x86_64-Linux/local/lib/libatlas.so
#1 0x00007fffecb4ef87 in ATL_dmmK ()
from /tmp/sage-4.7.1.rc2-fat-x86_64-Linux/local/lib/libatlas.so
#2 0x00007fffecb4fff5 in ATL_dmmJITcp ()
from /tmp/sage-4.7.1.rc2-fat-x86_64-Linux/local/lib/libatlas.so
#3 0x00007fffecb442c4 in ATL_dgemm ()
from /tmp/sage-4.7.1.rc2-fat-x86_64-Linux/local/lib/libatlas.so
#4 0x00007fffece2c87d in ATL_dptgemm0 ()
from /tmp/sage-4.7.1.rc2-fat-x86_64-Linux/local/lib/libatlas.so
#5 0x00007ffff780c9ca in start_thread (arg=<value optimized out>) at
pthread_create.c:300
#6 0x00007ffff6edf70d in clone () at
../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#7 0x0000000000000000 in ?? ()
(gdb)
}}}
--
Ticket URL: <http://trac.sagemath.org/sage_trac/ticket/11674#comment:25>
Sage <http://www.sagemath.org>
Sage: Creating a Viable Open Source Alternative to Magma, Maple, Mathematica,
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