Dear all, After upgrading to petsc 3.12.2 my solver program crashes consistently. Before the upgrade I was using petsc 3.9.4 with no problems.
My application deals with a complex-valued, generalized eigenvalue problem. The matrices involved are relatively large, typically 2 to 10 Gb in size, which is no problem for petsc 3.9.4. However, after the upgrade I can only obtain solutions when the matrices are small, the solver crashes when the matrices' size exceed about 1.5 Gb: [0]PETSC ERROR: ------------------------------------------------------------------------ [0]PETSC ERROR: Caught signal number 15 Terminate: Some process (or the batch system) has told this process to end [0]PETSC ERROR: Try option -start_in_debugger or -on_error_attach_debugger [0]PETSC ERROR: or see https://www.mcs.anl.gov/petsc/documentation/faq.html#valgrind [0]PETSC ERROR: or try http://valgrind.org on GNU/linux and Apple Mac OS X to find memory corruption errors [0]PETSC ERROR: configure using --with-debugging=yes, recompile, link, and run [0]PETSC ERROR: to get more information on the crash. and so on for each cpu. I tried using valgrind and this is the typical output: ==2874== Conditional jump or move depends on uninitialised value(s) ==2874== at 0x4018178: index (in /lib64/ld-2.22.so) ==2874== by 0x400752D: expand_dynamic_string_token (in /lib64/ld-2.22.so) ==2874== by 0x4008009: _dl_map_object (in /lib64/ld-2.22.so) ==2874== by 0x40013E4: map_doit (in /lib64/ld-2.22.so) ==2874== by 0x400EA53: _dl_catch_error (in /lib64/ld-2.22.so) ==2874== by 0x4000ABE: do_preload (in /lib64/ld-2.22.so) ==2874== by 0x4000EC0: handle_ld_preload (in /lib64/ld-2.22.so) ==2874== by 0x40034F0: dl_main (in /lib64/ld-2.22.so) ==2874== by 0x4016274: _dl_sysdep_start (in /lib64/ld-2.22.so) ==2874== by 0x4004A99: _dl_start (in /lib64/ld-2.22.so) ==2874== by 0x40011F7: ??? (in /lib64/ld-2.22.so) ==2874== by 0x12: ??? ==2874== These are my configuration options. Identical for both petsc 3.9.4 and 3.12.2: ./configure --with-scalar-type=complex --download-mumps --download-parmetis --download-metis --download-scalapack=1 --download-fblaslapack=1 --with-debugging=0 --download-superlu_dist=1 --download-ptscotch=1 CXXOPTFLAGS='-O3 -march=native' FOPTFLAGS='-O3 -march=native' COPTFLAGS='-O3 -march=native' Thanks in advance for any comments or ideas! Cheers, Santiago
