Hi, I check and fixe all lib: ldd ~/bin/lib/python2.7/site-packages/graph_tool/libgraph_tool_core.so linux-vdso.so.1 => (0x00007ffc8f5ea000) libpython2.7.so.1.0 => /soft/bioinfo/linux_RH6/python-2.7.6/lib/libpython2.7.so.1.0 (0x00007f0ff8088000) libboost_iostreams.so.1.59.0 => /soft/bioinfo/linux_RH6/boost-1.59.0/lib/libboost_iostreams.so.1.59.0 (0x00007f0ff7e70000) libboost_python.so.1.59.0 => /soft/bioinfo/linux_RH6/boost-1.59.0/lib/libboost_python.so.1.59.0 (0x00007f0ff7c22000) libboost_regex.so.1.59.0 => /soft/bioinfo/linux_RH6/boost-1.59.0/lib/libboost_regex.so.1.59.0 (0x00007f0ff7911000) libboost_coroutine.so.1.59.0 => /soft/bioinfo/linux_RH6/boost-1.59.0/lib/libboost_coroutine.so.1.59.0 (0x00007f0ff7704000) libCGAL.so.11 => /u/eaudemard/bin/lib/libCGAL.so.11 (0x00007f0ff74db000) libexpat.so.1 => /soft/bioinfo/linux_RH6/gcc-4.9.3/lib/libexpat.so.1 (0x00007f0ff72b2000) libbz2.so.1 => /lib64/libbz2.so.1 (0x00007f0ff7077000) libstdc++.so.6 => /soft/bioinfo/linux_RH6/gcc-4.9.3/lib/../lib64/libstdc++.so.6 (0x00007f0ff6d65000) libm.so.6 => /lib64/libm.so.6 (0x00007f0ff6ae1000) libc.so.6 => /lib64/libc.so.6 (0x00007f0ff674c000) libgcc_s.so.1 => /soft/bioinfo/linux_RH6/gcc-4.9.3/lib/../lib64/libgcc_s.so.1 (0x00007f0ff6536000) libpthread.so.0 => /lib64/libpthread.so.0 (0x00007f0ff6319000) libdl.so.2 => /lib64/libdl.so.2 (0x00007f0ff6114000) libutil.so.1 => /lib64/libutil.so.1 (0x00007f0ff5f11000) libz.so.1 => /lib64/libz.so.1 (0x00007f0ff5cfb000) librt.so.1 => /lib64/librt.so.1 (0x00007f0ff5af2000) libicudata.so.42 => /usr/lib64/libicudata.so.42 (0x00007f0ff49a7000) libicui18n.so.42 => /usr/lib64/libicui18n.so.42 (0x00007f0ff4611000) libicuuc.so.42 => /usr/lib64/libicuuc.so.42 (0x00007f0ff42be000) libboost_context.so.1.59.0 => /soft/bioinfo/linux_RH6/boost-1.59.0/lib/libboost_context.so.1.59.0 (0x00007f0ff40b3000) libboost_thread.so.1.59.0 => /soft/bioinfo/linux_RH6/boost-1.59.0/lib/libboost_thread.so.1.59.0 (0x00007f0ff3e91000) libboost_chrono.so.1.59.0 => /soft/bioinfo/linux_RH6/boost-1.59.0/lib/libboost_chrono.so.1.59.0 (0x00007f0ff3c8a000) libboost_system.so.1.59.0 => /soft/bioinfo/linux_RH6/boost-1.59.0/lib/libboost_system.so.1.59.0 (0x00007f0ff3a87000) libmpfr.so.4 => /u/eaudemard/bin/lib/libmpfr.so.4 (0x00007f0ff3827000) libgmp.so.10 => /u/eaudemard/bin/lib/libgmp.so.10 (0x00007f0ff35b1000) And the segmentation fault is deferent (with gdb): (gdb) bt #0 0x000000339ee4406a in vfprintf () from /lib64/libc.so.6 #1 0x000000339ee69609 in vsprintf () from /lib64/libc.so.6 #2 0x000000339ee4f2b8 in sprintf () from /lib64/libc.so.6 #3 0x0000000000464451 in PyString_FromFormatV (format=0x530a57 "", vargs=0x7fffff3ff8e0) at Objects/stringobject.c:370 #4 0x000000000046491b in PyString_FromFormat (format=<value optimized out>) at Objects/stringobject.c:410 #5 0x000000000046f0ae in object_repr (self=0x6f51b10) at Objects/typeobject.c:2996 #6 0x00000000004522a5 in PyObject_Repr (v=0x6f51b10) at Objects/object.c:381 #7 0x0000000000452668 in internal_print (op=0x6f51b10, fp=0x339f18e7a0, flags=<value optimized out>, nesting=0) at Objects/object.c:305 #8 0x000000000044ccbd in dict_print (mp=0x44c993830, fp=0x339f18e7a0, flags=<value optimized out>) at Objects/dictobject.c:1063 #9 0x00000000004525a3 in internal_print (op=0x44c993830, fp=0x339f18e7a0, flags=1, nesting=0) at Objects/object.c:315 #10 0x000000000042f9d9 in file_PyObject_Print (v=<value optimized out>, f=0x7ffff7fae150, flags=1) at Objects/fileobject.c:110 #11 PyFile_WriteObject (v=<value optimized out>, f=0x7ffff7fae150, flags=1) at Objects/fileobject.c:2574 #12 0x00000000004a70d9 in PyEval_EvalFrameEx (f=<value optimized out>, throwflag=<value optimized out>) at Python/ceval.c:1770 #13 0x00000000004a9ab5 in fast_function (f=<value optimized out>, throwflag=<value optimized out>) at Python/ceval.c:4107 #14 call_function (f=<value optimized out>, throwflag=<value optimized out>) at Python/ceval.c:4042 #15 PyEval_EvalFrameEx (f=<value optimized out>, throwflag=<value optimized out>) at Python/ceval.c:2666 #16 0x00000000004a9ab5 in fast_function (f=<value optimized out>, throwflag=<value optimized out>) at Python/ceval.c:4107 #17 call_function (f=<value optimized out>, throwflag=<value optimized out>) at Python/ceval.c:4042 #18 PyEval_EvalFrameEx (f=<value optimized out>, throwflag=<value optimized out>) at Python/ceval.c:2666 The version of /lib64/libc.so come from CentOS 6: glibc-2.17-106.el7_2.1.x86_64 (compiled with gcc 4.4.7) We update your OS in 2 weeks, but do you know if this version can create an segmentation fault ? Or have you an other idea ? Regards, Eric. -- View this message in context: http://main-discussion-list-for-the-graph-tool-project.982480.n3.nabble.com/... Sent from the Main discussion list for the graph-tool project mailing list archive at Nabble.com.