On Sunday, September 25, 2016 at 9:33:42 PM UTC, Jonathan Bober wrote: > > I'm getting a segfault on the current development branch of sage (see > below). Is this a known issue and/or effecting anyone else? > > This does not happen for me in Sage 7.3, although it does happen if I try > to go "back in time" with a 'git checkout 7.3' and then rebuild. So just to > be certain I built a few copies from scratch. > > This is from a doctest in src/doc/*/a_tour_of_sage/index.rst, easily > reproducible. (Notice the * there. I guess Sage separately tests the > documentation in each language...) > > sage: m = random_matrix(RDF,500) > sage: m.eigenvalues() > ------------------------------------------------------------------------ > > /data/home/jb12407/sources/sage/local/lib/python2.7/site-packages/cysignals/signals.so(+0x4635)[0x7f6d34da4635] > > /data/home/jb12407/sources/sage/local/lib/python2.7/site-packages/cysignals/signals.so(+0x4685)[0x7f6d34da4685] > > /data/home/jb12407/sources/sage/local/lib/python2.7/site-packages/cysignals/signals.so(+0x7107)[0x7f6d34da7107] > /lib64/libpthread.so.0[0x30f700f7e0] > > /data/home/jb12407/sources/sage/local/lib/libopenblas.so.0(daxpy_k+0x48)[0x7f6d29e9eab8] > > /data/home/jb12407/sources/sage/local/lib/libopenblas.so.0(+0xc9c3e)[0x7f6d29ca9c3e] > > /data/home/jb12407/sources/sage/local/lib/libopenblas.so.0(exec_blas+0xd9)[0x7f6d29e590f9] > > /data/home/jb12407/sources/sage/local/lib/libopenblas.so.0(dtrmv_thread_NLU+0x204)[0x7f6d29ca9f34] > > /data/home/jb12407/sources/sage/local/lib/libopenblas.so.0(dtrmv_+0x155)[0x7f6d29c67b75] > > /data/home/jb12407/sources/sage/local/lib/libopenblas.so.0(dlahr2_+0x451)[0x7f6d2a0eecb1] > > /data/home/jb12407/sources/sage/local/lib/libopenblas.so.0(dgehrd_+0x47d)[0x7f6d2a0b6c8d] > > /data/home/jb12407/sources/sage/local/lib/libopenblas.so.0(dgeev_+0x430)[0x7f6d2a0b1470] > > /data/home/jb12407/sources/sage/local/lib/python2.7/site-packages/scipy/linalg/_flapack.so(+0x2cde7)[0x7f66808b4de7] > > /data/home/jb12407/sources/sage/local/lib/libpython2.7.so.1.0(PyObject_Call+0x43)[0x7f6d4244aed3] > > /data/home/jb12407/sources/sage/local/lib/libpython2.7.so.1.0(PyEval_EvalFrameEx+0x388a)[0x7f6d424fd5ba] > > /data/home/jb12407/sources/sage/local/lib/libpython2.7.so.1.0(PyEval_EvalCodeEx+0x81c)[0x7f6d4250066c] > > /data/home/jb12407/sources/sage/local/lib/libpython2.7.so.1.0(PyEval_EvalFrameEx+0x5654)[0x7f6d424ff384] > > /data/home/jb12407/sources/sage/local/lib/libpython2.7.so.1.0(PyEval_EvalCodeEx+0x81c)[0x7f6d4250066c] > > /data/home/jb12407/sources/sage/local/lib/libpython2.7.so.1.0(+0x839fc)[0x7f6d4247b9fc] > > /data/home/jb12407/sources/sage/local/lib/python2.7/site-packages/sage/matrix/matrix_double_dense.so(+0x9949)[0x7f6682759949] > > /data/home/jb12407/sources/sage/local/lib/python2.7/site-packages/sage/matrix/matrix_double_dense.so(+0x5161b)[0x7f66827a161b] > > /data/home/jb12407/sources/sage/local/lib/libpython2.7.so.1.0(PyEval_EvalFrameEx+0x5331)[0x7f6d424ff061] > > /data/home/jb12407/sources/sage/local/lib/libpython2.7.so.1.0(PyEval_EvalCodeEx+0x81c)[0x7f6d4250066c] > > /data/home/jb12407/sources/sage/local/lib/libpython2.7.so.1.0(PyEval_EvalCode+0x19)[0x7f6d42500789] > > /data/home/jb12407/sources/sage/local/lib/libpython2.7.so.1.0(PyEval_EvalFrameEx+0x509e)[0x7f6d424fedce] > > /data/home/jb12407/sources/sage/local/lib/libpython2.7.so.1.0(PyEval_EvalCodeEx+0x81c)[0x7f6d4250066c] > > /data/home/jb12407/sources/sage/local/lib/libpython2.7.so.1.0(PyEval_EvalFrameEx+0x5654)[0x7f6d424ff384] > > /data/home/jb12407/sources/sage/local/lib/libpython2.7.so.1.0(PyEval_EvalCodeEx+0x81c)[0x7f6d4250066c] > > /data/home/jb12407/sources/sage/local/lib/libpython2.7.so.1.0(PyEval_EvalFrameEx+0x5654)[0x7f6d424ff384] > > /data/home/jb12407/sources/sage/local/lib/libpython2.7.so.1.0(PyEval_EvalCodeEx+0x81c)[0x7f6d4250066c] > > /data/home/jb12407/sources/sage/local/lib/libpython2.7.so.1.0(PyEval_EvalFrameEx+0x5654)[0x7f6d424ff384] > > /data/home/jb12407/sources/sage/local/lib/libpython2.7.so.1.0(PyEval_EvalCodeEx+0x81c)[0x7f6d4250066c] > > /data/home/jb12407/sources/sage/local/lib/libpython2.7.so.1.0(PyEval_EvalFrameEx+0x5654)[0x7f6d424ff384] > > /data/home/jb12407/sources/sage/local/lib/libpython2.7.so.1.0(PyEval_EvalCodeEx+0x81c)[0x7f6d4250066c] > > /data/home/jb12407/sources/sage/local/lib/libpython2.7.so.1.0(PyEval_EvalFrameEx+0x5654)[0x7f6d424ff384] > > /data/home/jb12407/sources/sage/local/lib/libpython2.7.so.1.0(PyEval_EvalCodeEx+0x81c)[0x7f6d4250066c] > > /data/home/jb12407/sources/sage/local/lib/libpython2.7.so.1.0(PyEval_EvalFrameEx+0x5654)[0x7f6d424ff384] > > /data/home/jb12407/sources/sage/local/lib/libpython2.7.so.1.0(PyEval_EvalCodeEx+0x81c)[0x7f6d4250066c] > > /data/home/jb12407/sources/sage/local/lib/libpython2.7.so.1.0(PyEval_EvalCode+0x19)[0x7f6d42500789] > > /data/home/jb12407/sources/sage/local/lib/libpython2.7.so.1.0(PyRun_FileExFlags+0x8a)[0x7f6d42523e5a] > > /data/home/jb12407/sources/sage/local/lib/libpython2.7.so.1.0(PyRun_SimpleFileExFlags+0xd7)[0x7f6d42525207] > > /data/home/jb12407/sources/sage/local/lib/libpython2.7.so.1.0(Py_Main+0xc3e)[0x7f6d4253b70e] > /lib64/libc.so.6(__libc_start_main+0xfd)[0x30f6c1ed1d] > python[0x4006f1] > ------------------------------------------------------------------------ > Attaching gdb to process id 56935. > GNU gdb (GDB) Red Hat Enterprise Linux (7.2-90.el6) > Copyright (C) 2010 Free Software Foundation, Inc. > License GPLv3+: GNU GPL version 3 or later < > http://gnu.org/licenses/gpl.html> > This is free software: you are free to change and redistribute it. > There is NO WARRANTY, to the extent permitted by law. Type "show copying" > and "show warranty" for details. > This GDB was configured as "x86_64-redhat-linux-gnu". > For bug reporting instructions, please see: > <http://www.gnu.org/software/gdb/bugs/>. > (gdb) Hangup detected on fd 0 > error detected on stdin > > Your system GDB is an old version that does not work with pipes > Install gdb for enhanced tracebacks. > ------------------------------------------------------------------------ > Unhandled SIGSEGV: A segmentation fault occurred. > This probably occurred because a *compiled* module has a bug > in it and is not properly wrapped with sig_on(), sig_off(). > Python will now terminate. > ------------------------------------------------------------------------ > > I guess more details are needed, like CPU type (what does lscpu tell?)
For me, on i7-6600U CPU @ 2.60GHz, it works: sage: m = random_matrix(RDF,500) sage: e=m.eigenvalues() sage: len(e) 500 -- You received this message because you are subscribed to the Google Groups "sage-devel" group. To unsubscribe from this group and stop receiving emails from it, send an email to sage-devel+unsubscr...@googlegroups.com. To post to this group, send email to sage-devel@googlegroups.com. Visit this group at https://groups.google.com/group/sage-devel. For more options, visit https://groups.google.com/d/optout.
