https://gcc.gnu.org/bugzilla/show_bug.cgi?id=113005
--- Comment #10 from Jakub Jelinek <jakub at gcc dot gnu.org> --- For the distro builds the log files are all I have (all logs in https://koji.fedoraproject.org/koji/taskinfo?taskID=110644223 ) For what I can reproduce on my box (rwlock_1.exe built in the x86_64-pc-linux-gnu/libgomp/testsuite subdirectory using the -O0 compilation line from libgomp*/*.sep: $ OMP_NUM_THREADS=4096 LD_LIBRARY_PATH=../.libs/ time ./rwlock_1.exe STOP 2 At line 28 of file /home/jakub/src/gcc/libgomp/testsuite/libgomp.fortran/rwlock_1.f90 (unit = 2187, file = '***_tst.dat') Fortran runtime error: End of file STOP 2 Command exited with non-zero status 2 0.11user 1.19system 0:00.19elapsed 691%CPU (0avgtext+0avgdata 51824maxresident)k 0inputs+368outputs (0major+12303minor)pagefaults 0swaps $ OMP_NUM_THREADS=4096 LD_LIBRARY_PATH=../.libs/ time ./rwlock_1.exe STOP 2 STOP 2 Command exited with non-zero status 2 0.09user 1.03system 0:00.17elapsed 650%CPU (0avgtext+0avgdata 49988maxresident)k 0inputs+288outputs (0major+11835minor)pagefaults 0swaps $ OMP_NUM_THREADS=4096 LD_LIBRARY_PATH=../.libs/ time ./rwlock_1.exe STOP 2 At line 17 of file /home/jakub/src/gcc/libgomp/testsuite/libgomp.fortran/rwlock_1.f90 (unit = 3798) At line 17 of file /home/jakub/src/gcc/libgomp/testsuite/libgomp.fortran/rwlock_1.f90 (unit = 3151) Internal Error: Unit number changed Internal Error: Unit number changed Error termination. Backtrace: Error termination. Backtrace: At line 17 of file /home/jakub/src/gcc/libgomp/testsuite/libgomp.fortran/rwlock_1.f90 (unit = 795) Internal Error: Unit number changed Error termination. Backtrace: At line 17 of file /home/jakub/src/gcc/libgomp/testsuite/libgomp.fortran/rwlock_1.f90 (unit = 46) Internal Error: Unit number changed Error termination. Backtrace: At line 17 of file /home/jakub/src/gcc/libgomp/testsuite/libgomp.fortran/rwlock_1.f90 (unit = 2386) Internal Error: Unit number changed Error termination. Backtrace: At line 17 of file /home/jakub/src/gcc/libgomp/testsuite/libgomp.fortran/rwlock_1.f90 (unit = 1841) Fortran runtime error: Cannot open file '***_tst.dat': Too many open files Error termination. Backtrace: At line 17 of file /home/jakub/src/gcc/libgomp/testsuite/libgomp.fortran/rwlock_1.f90 (unit = 3692) Fortran runtime error: Cannot open file '***_tst.dat': Too many open files Error termination. Backtrace: At line 17 of file /home/jakub/src/gcc/libgomp/testsuite/libgomp.fortran/rwlock_1.f90 (unit = 3880) Internal Error: Unit number changed Error termination. Backtrace: At line 17 of file /home/jakub/src/gcc/libgomp/testsuite/libgomp.fortran/rwlock_1.f90 (unit = 947) Internal Error: Unit number changed Error termination. Backtrace: At line 17 of file /home/jakub/src/gcc/libgomp/testsuite/libgomp.fortran/rwlock_1.f90 (unit = 2930) Internal Error: Unit number changed Error termination. Backtrace: At line 17 of file /home/jakub/src/gcc/libgomp/testsuite/libgomp.fortran/rwlock_1.f90 (unit = 565) Internal Error: Unit number changed Error termination. Backtrace: At line 17 of file /home/jakub/src/gcc/libgomp/testsuite/libgomp.fortran/rwlock_1.f90 (unit = 323) Internal Error: Unit number changed Error termination. Backtrace: At line 17 of file /home/jakub/src/gcc/libgomp/testsuite/libgomp.fortran/rwlock_1.f90 (unit = 1651) Fortran runtime error: Cannot open file '***_tst.dat': Too many open files Error termination. Backtrace: At line 17 of file /home/jakub/src/gcc/libgomp/testsuite/libgomp.fortran/rwlock_1.f90 (unit = 1684) Fortran runtime error: Cannot open file '***_tst.dat': Too many open files At line 17 of file /home/jakub/src/gcc/libgomp/testsuite/libgomp.fortran/rwlock_1.f90 (unit = 3659) Error termination. Backtrace: Fortran runtime error: Cannot open file '***_tst.dat': Too many open files Error termination. Backtrace: At line 17 of file /home/jakub/src/gcc/libgomp/testsuite/libgomp.fortran/rwlock_1.f90 (unit = 846) Fortran runtime error: Cannot open file '846_tst.dat': Too many open files Error termination. Backtrace: At line 17 of file /home/jakub/src/gcc/libgomp/testsuite/libgomp.fortran/rwlock_1.f90 (unit = 2224) Fortran runtime error: Cannot open file '***_tst.dat': Too many open files Error termination. Backtrace: Could not print backtrace: /proc/self/exe: Too many open files At line 17 of file /home/jakub/src/gcc/libgomp/testsuite/libgomp.fortran/rwlock_1.f90 (unit = 3913) Fortran runtime error: Cannot open file '***_tst.dat': Too many open files Error termination. Backtrace: #0 0x7f9728be6a3e #1 0x7f9728be7509 #2 0x7f9728be805f #0 0x7f9728be6a3e #3 0x7f9728e29128 At line 17 of file /home/jakub/src/gcc/libgomp/testsuite/libgomp.fortran/rwlock_1.f90 (unit = 1183) #1 0x7f9728be7509 #4 0x7f9728e2940d Fortran runtime error: Cannot open file '***_tst.dat': Too many open files #2 0x7f9728be805f #5 0x40140f At line 17 of file /home/jakub/src/gcc/libgomp/testsuite/libgomp.fortran/rwlock_1.f90 (unit = 860) Error termination. Backtrace: #3 0x7f9728e29128 At line 17 of file /home/jakub/src/gcc/libgomp/testsuite/libgomp.fortran/rwlock_1.f90 (unit = 2565) #6 0x7f9728ab430d Fortran runtime error: Cannot open file '860_tst.dat': Too many open files At line 17 of file /home/jakub/src/gcc/libgomp/testsuite/libgomp.fortran/rwlock_1.f90 (unit = 3722) #4 0x7f9728e2940d Fortran runtime error: Cannot open file '***_tst.dat': Too many open files #7 0x7f97288fbe5c Error termination. Backtrace: #0 0x7f9728be6a3e Fortran runtime error: Cannot open file '***_tst.dat': Too many open files #5 0x40140f Error termination. Backtrace: #8 0x7f97289818ef #1 0x7f9728be7509 Error termination. Backtrace: #2 0x7f9728be805f #6 0x7f9728ab430d #9 0xffffffffffffffff #3 0x7f9728e29128 #0 0x7f9728be6a3e #7 0x7f97288fbe5c #4 0x7f9728e2940d #0 0x7f9728be6a3e #1 0x7f9728be7509 #8 0x7f97289818ef #5 0x40140f #0 0x7f9728be6a3e #1 0x7f9728be7509 #2 0x7f9728be805f #9 0xffffffffffffffff At line 17 of file /home/jakub/src/gcc/libgomp/testsuite/libgomp.fortran/rwlock_1.f90 (unit = 707) #6 0x7f9728ab430d #1 0x7f9728be7509 #2 0x7f9728be805f #3 0x7f9728e29128 Fortran runtime error: Cannot open file '707_tst.dat': Too many open files #7 0x7f97288fbe5c #2 0x7f9728be805f #3 0x7f9728e29128 Error termination. Backtrace: #8 0x7f97289818ef #3 0x7f9728e29128 #4 0x7f9728e2940d #9 0xffffffffffffffff #4 0x7f9728e2940d At line 17 of file /home/jakub/src/gcc/libgomp/testsuite/libgomp.fortran/rwlock_1.f90 (unit = 3382) #5 0x40140f #5 0x40140f #0 0x7f9728be6a3e #6 0x7f9728ab430d At line 17 of file /home/jakub/src/gcc/libgomp/testsuite/libgomp.fortran/rwlock_1.f90 (unit = 1534) Fortran runtime error: Cannot open file '***_tst.dat': Too many open files #6 0x7f9728ab430d #1 0x7f9728be7509 #7 0x7f97288fbe5c Fortran runtime error: Cannot open file '***_tst.dat': Too many open files Error termination. Backtrace: #7 0x7f97288fbe5c #2 0x7f9728be805f #8 0x7f97289818ef Error termination. Backtrace: #8 0x7f97289818ef #3 0x7f9728e29128 #9 0xffffffffffffffff #9 0xffffffffffffffff #4 0x7f9728e2940d #0 0x7f9728be6a3e #5 0x40140f #1 0x7f9728be7509 #6 0x7f9728ab430d #0 0x7f9728be6a3e #2 0x7f9728be805f #7 0x7f97288fbe5c #1 0x7f9728be7509 #3 0x7f9728e29128 #8 0x7f97289818ef #2 0x7f9728be805f #4 0x7f9728e2940d #9 0xffffffffffffffff #5 0x40140f #3 0x7f9728e29128 #6 0x7f9728ab430d #4 0x7f9728e2940d #7 0x7f97288fbe5c #5 0x40140f #8 0x7f97289818ef #6 0x7f9728ab430d #9 0xffffffffffffffff #7 0x7f97288fbe5c #8 0x7f97289818ef #9 0xffffffffffffffff Command exited with non-zero status 2 0.14user 1.54system 0:00.21elapsed 783%CPU (0avgtext+0avgdata 59916maxresident)k 0inputs+184outputs (2major+14287minor)pagefaults 0swaps $ OMP_NUM_THREADS=2048 LD_LIBRARY_PATH=../.libs/ time ./rwlock_1.exe At line 28 of file /home/jakub/src/gcc/libgomp/testsuite/libgomp.fortran/rwlock_1.f90 (unit = 1330, file = '***_tst.dat') Fortran runtime error: End of file STOP 2 At line 28 of file /home/jakub/src/gcc/libgomp/testsuite/libgomp.fortran/rwlock_1.f90 (unit = 1103, file = '***_tst.dat') Fortran runtime error: End of file STOP 2 Command exited with non-zero status 2 0.06user 0.63system 0:00.14elapsed 472%CPU (0avgtext+0avgdata 27116maxresident)k 0inputs+480outputs (0major+6134minor)pagefaults 0swaps $ OMP_NUM_THREADS=2048 LD_LIBRARY_PATH=../.libs/ time ./rwlock_1.exe STOP 2 At line 17 of file /home/jakub/src/gcc/libgomp/testsuite/libgomp.fortran/rwlock_1.f90 (unit = 1759) At line 17 of file /home/jakub/src/gcc/libgomp/testsuite/libgomp.fortran/rwlock_1.f90 (unit = 1734) Internal Error: Unit number changed Internal Error: Unit number changed Error termination. Backtrace: Error termination. Backtrace: At line 17 of file /home/jakub/src/gcc/libgomp/testsuite/libgomp.fortran/rwlock_1.f90 (unit = 1011) Internal Error: Unit number changed Error termination. Backtrace: At line 17 of file /home/jakub/src/gcc/libgomp/testsuite/libgomp.fortran/rwlock_1.f90 (unit = 1702) Internal Error: Unit number changed Error termination. Backtrace: At line 17 of file /home/jakub/src/gcc/libgomp/testsuite/libgomp.fortran/rwlock_1.f90 (unit = 898) At line 17 of file /home/jakub/src/gcc/libgomp/testsuite/libgomp.fortran/rwlock_1.f90 (unit = 903) Internal Error: Unit number changed Internal Error: Unit number changed Error termination. Backtrace: Error termination. Backtrace: At line 17 of file /home/jakub/src/gcc/libgomp/testsuite/libgomp.fortran/rwlock_1.f90 (unit = 545) Internal Error: Unit number changed Error termination. Backtrace: At line 17 of file /home/jakub/src/gcc/libgomp/testsuite/libgomp.fortran/rwlock_1.f90 (unit = 1181) At line 17 of file /home/jakub/src/gcc/libgomp/testsuite/libgomp.fortran/rwlock_1.f90 (unit = 106) Internal Error: Unit number changed Internal Error: Unit number changed Error termination. Backtrace: Error termination. Backtrace: At line 17 of file /home/jakub/src/gcc/libgomp/testsuite/libgomp.fortran/rwlock_1.f90 (unit = 1622) Internal Error: Unit number changed Error termination. Backtrace: At line 17 of file /home/jakub/src/gcc/libgomp/testsuite/libgomp.fortran/rwlock_1.f90 (unit = 243) Internal Error: Unit number changed Error termination. Backtrace: At line 17 of file /home/jakub/src/gcc/libgomp/testsuite/libgomp.fortran/rwlock_1.f90 (unit = 1677) Internal Error: Unit number changed Error termination. Backtrace: At line 25 of file /home/jakub/src/gcc/libgomp/testsuite/libgomp.fortran/rwlock_1.f90 (unit = 1321) Fortran runtime error: Cannot open file '***_tst.dat': Too many open files Error termination. Backtrace: At line 17 of file /home/jakub/src/gcc/libgomp/testsuite/libgomp.fortran/rwlock_1.f90 (unit = 69) At line 17 of file /home/jakub/src/gcc/libgomp/testsuite/libgomp.fortran/rwlock_1.f90 (unit = 842) At line 17 of file /home/jakub/src/gcc/libgomp/testsuite/libgomp.fortran/rwlock_1.f90 (unit = 1285) Fortran runtime error: Cannot open file '69_tst.dat': Too many open files At line 17 of file /home/jakub/src/gcc/libgomp/testsuite/libgomp.fortran/rwlock_1.f90 (unit = 1340) At line 17 of file /home/jakub/src/gcc/libgomp/testsuite/libgomp.fortran/rwlock_1.f90 (unit = 1723) Fortran runtime error: Cannot open file '842_tst.dat': Too many open files Fortran runtime error: Cannot open file '***_tst.dat': Too many open files At line 25 of file /home/jakub/src/gcc/libgomp/testsuite/libgomp.fortran/rwlock_1.f90 (unit = 495) At line 17 of file /home/jakub/src/gcc/libgomp/testsuite/libgomp.fortran/rwlock_1.f90 (unit = 186) Error termination. Backtrace: Fortran runtime error: Cannot open file '***_tst.dat': Too many open files Fortran runtime error: Cannot open file '***_tst.dat': Too many open files Error termination. Backtrace: Error termination. Backtrace: Fortran runtime error: Cannot open file '495_tst.dat': Too many open files Fortran runtime error: Cannot open file '186_tst.dat': Too many open files Error termination. Backtrace: Error termination. Backtrace: Error termination. Backtrace: Error termination. Backtrace: Could not print backtrace: /proc/self/exe: Too many open files Could not print backtrace: /proc/self/exe: Too many open files At line 17 of file /home/jakub/src/gcc/libgomp/testsuite/libgomp.fortran/rwlock_1.f90 (unit = 1427) Fortran runtime error: Cannot open file '***_tst.dat': Too many open files Error termination. Backtrace: At line 17 of file /home/jakub/src/gcc/libgomp/testsuite/libgomp.fortran/rwlock_1.f90 (unit = 1658) Fortran runtime error: Cannot open file '***_tst.dat': Too many open files Error termination. Backtrace: At line 17 of file /home/jakub/src/gcc/libgomp/testsuite/libgomp.fortran/rwlock_1.f90 (unit = 1180) Fortran runtime error: Cannot open file '***_tst.dat': Too many open files Error termination. Backtrace: #0 0x7f5db0b78a3e #1 0x7f5db0b79509 #2 0x7f5db0b7a05f #3 0x7f5db0dbb128 #4 0x7f5db0dbb40d #5 0x40140f #6 0x7f5db0a4630d #7 0x7f5db088de5c #8 0x7f5db09138ef #9 0xffffffffffffffff At line 17 of file /home/jakub/src/gcc/libgomp/testsuite/libgomp.fortran/rwlock_1.f90 (unit = 1073) Fortran runtime error: Cannot open file '***_tst.dat': Too many open files Error termination. Backtrace: #0 0x7f5db0b78a3e #1 0x7f5db0b79509 #2 0x7f5db0b7a05f #3 0x7f5db0dbb128 #4 0x7f5db0dbb40d #5 0x40140f #6 0x7f5db0a4630d #7 0x7f5db088de5c #8 0x7f5db09138ef #9 0xffffffffffffffff At line 17 of file /home/jakub/src/gcc/libgomp/testsuite/libgomp.fortran/rwlock_1.f90 (unit = 1027) Fortran runtime error: Cannot open file '***_tst.dat': Too many open files Error termination. Backtrace: #0 0x7f5db0b78a3e #1 0x7f5db0b79509 At line 17 of file /home/jakub/src/gcc/libgomp/testsuite/libgomp.fortran/rwlock_1.f90 (unit = 952) Fortran runtime error: Cannot open file '952_tst.dat': Too many open files Error termination. Backtrace: At line 17 of file /home/jakub/src/gcc/libgomp/testsuite/libgomp.fortran/rwlock_1.f90 (unit = 33) Command exited with non-zero status 2 0.07user 0.85system 0:00.14elapsed 659%CPU (0avgtext+0avgdata 37472maxresident)k 0inputs+576outputs (0major+8565minor)pagefaults 0swaps $ OMP_NUM_THREADS=1024 LD_LIBRARY_PATH=../.libs/ time ./rwlock_1.exe STOP 2 At line 17 of file /home/jakub/src/gcc/libgomp/testsuite/libgomp.fortran/rwlock_1.f90 (unit = 1029) Internal Error: Unit number changed Error termination. Backtrace: At line 17 of file /home/jakub/src/gcc/libgomp/testsuite/libgomp.fortran/rwlock_1.f90 (unit = 803) Internal Error: Unit number changed Error termination. Backtrace: At line 25 of file /home/jakub/src/gcc/libgomp/testsuite/libgomp.fortran/rwlock_1.f90 (unit = 867) Internal Error: Unit number changed Error termination. Backtrace: At line 17 of file /home/jakub/src/gcc/libgomp/testsuite/libgomp.fortran/rwlock_1.f90 (unit = 712) Internal Error: Unit number changed Error termination. Backtrace: At line 17 of file /home/jakub/src/gcc/libgomp/testsuite/libgomp.fortran/rwlock_1.f90 (unit = 123) Internal Error: Unit number changed Error termination. Backtrace: At line 17 of file /home/jakub/src/gcc/libgomp/testsuite/libgomp.fortran/rwlock_1.f90 (unit = 162) At line 17 of file /home/jakub/src/gcc/libgomp/testsuite/libgomp.fortran/rwlock_1.f90 (unit = 35) Internal Error: Unit number changed Internal Error: Unit number changed Error termination. Backtrace: Error termination. Backtrace: At line 25 of file /home/jakub/src/gcc/libgomp/testsuite/libgomp.fortran/rwlock_1.f90 (unit = 374) Internal Error: Unit number changed Error termination. Backtrace: At line 25 of file /home/jakub/src/gcc/libgomp/testsuite/libgomp.fortran/rwlock_1.f90 (unit = 543) Internal Error: Unit number changed Error termination. Backtrace: At line 17 of file /home/jakub/src/gcc/libgomp/testsuite/libgomp.fortran/rwlock_1.f90 (unit = 676) Internal Error: Unit number changed Error termination. Backtrace: At line 17 of file /home/jakub/src/gcc/libgomp/testsuite/libgomp.fortran/rwlock_1.f90 (unit = 404) Internal Error: Unit number changed Error termination. Backtrace: At line 17 of file /home/jakub/src/gcc/libgomp/testsuite/libgomp.fortran/rwlock_1.f90 (unit = 913) Internal Error: Unit number changed Error termination. Backtrace: At line 17 of file /home/jakub/src/gcc/libgomp/testsuite/libgomp.fortran/rwlock_1.f90 (unit = 985) Internal Error: Unit number changed Error termination. Backtrace: #0 0x7efceee2ea12 in ??? #1 0x7efceee2f509 in ??? #2 0x7efceee2fc38 in ??? #3 0x7efcef071196 in ??? #4 0x7efcef07140d in ??? #5 0x40140f in MAIN__._omp_fn.0 at /home/jakub/src/gcc/libgomp/testsuite/libgomp.fortran/rwlock_1.f90:17 #6 0x7efceecfc30d in gomp_thread_start at ../../../libgomp/team.c:129 #7 0x7efceeb43e5c in ??? #8 0x7efceebc98ef in ??? #9 0xffffffffffffffff in ??? Command exited with non-zero status 3 0.12user 0.77system 0:00.14elapsed 608%CPU (0avgtext+0avgdata 36608maxresident)k 192inputs+4368outputs (1major+8568minor)pagefaults 0swaps With OMP_NUM_THREADS=512 it works.
