Most probably gcc version used to build Sage is also quite important... On Sunday, September 25, 2016 at 10:16:23 PM UTC, Jonathan Bober wrote: > > jb12407@lmfdb5:~$ lscpu > Architecture: x86_64 > CPU op-mode(s): 32-bit, 64-bit > Byte Order: Little Endian > CPU(s): 64 > On-line CPU(s) list: 0-63 > Thread(s) per core: 2 > Core(s) per socket: 8 > Socket(s): 4 > NUMA node(s): 8 > Vendor ID: AuthenticAMD > CPU family: 21 > Model: 2 > Model name: AMD Opteron(tm) Processor 6380 > Stepping: 0 > CPU MHz: 2500.065 > BogoMIPS: 4999.42 > Virtualization: AMD-V > L1d cache: 16K > L1i cache: 64K > L2 cache: 2048K > L3 cache: 6144K > NUMA node0 CPU(s): 0-7 > NUMA node1 CPU(s): 8-15 > NUMA node2 CPU(s): 16-23 > NUMA node3 CPU(s): 24-31 > NUMA node4 CPU(s): 32-39 > NUMA node5 CPU(s): 40-47 > NUMA node6 CPU(s): 48-55 > NUMA node7 CPU(s): 56-63 > > (Old software...) > > jb12407@lmfdb5:~$ lsb_release -a > LSB Version: > :base-4.0-amd64:base-4.0-noarch:core-4.0-amd64:core-4.0-noarch:graphics-4.0-amd64:graphics-4.0-noarch:printing-4.0-amd64:printing-4.0-noarch > Distributor ID: Scientific > Description: Scientific Linux release 6.8 (Carbon) > Release: 6.8 > Codename: Carbon > > jb12407@lmfdb5:~$ uname -r > 2.6.32-573.3.1.el6.x86_64 > > On Sun, Sep 25, 2016 at 11:03 PM, Dima Pasechnik <dim...@gmail.com > <javascript:>> wrote: > >> >> >> 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+...@googlegroups.com <javascript:>. >> To post to this group, send email to sage-...@googlegroups.com >> <javascript:>. >> Visit this group at https://groups.google.com/group/sage-devel. >> For more options, visit https://groups.google.com/d/optout. >> > >
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