Yes, this time I really mean "fifo", not "lifo". ;-) With last night's master tarball (Open MPI dev-845-ga3275aa) configured with only --prefix and --enable-debug A Linux-86-64 system running debian Wheezy and compiler = "gcc (Debian 4.7.2-5) 4.7.2"
Failure from "make check": /home/phargrov/OMPI/openmpi-master-linux-x86_64-wheezy/openmpi-dev-845-ga3275aa/config/test-driver: line 95: 3697 Segmentation fault "$@" > $log_file 2>&1 FAIL: opal_fifo Manual run shows: $ ./test/class/opal_fifo Single thread test. Time: 0 s 33534 us 33 nsec/poppush Atomics thread finished. Time: 0 s 82289 us 82 nsec/poppush Atomics thread finished. Time: 4 s 844299 us 4844 nsec/poppush Atomics thread finished. Time: 5 s 27642 us 5027 nsec/poppush Atomics thread finished. Time: 5 s 65829 us 5065 nsec/poppush Atomics thread finished. Time: 5 s 264239 us 5264 nsec/poppush Atomics thread finished. Time: 5 s 432407 us 5432 nsec/poppush Atomics thread finished. Time: 5 s 462913 us 5462 nsec/poppush Atomics thread finished. Time: 5 s 466208 us 5466 nsec/poppush Atomics thread finished. Time: 5 s 485575 us 5485 nsec/poppush All threads finished. Thread count: 8 Time: 5 s 485844 us 685 nsec/poppush Segmentation fault (core dumped) When run within GDB: Program received signal SIGSEGV, Segmentation fault. [Switching to Thread 0x7ffff5c64700 (LWP 3948)] 0x0000000000401568 in opal_fifo_pop_atomic (fifo=0x7fffffffe830) at /home/phargrov/OMPI/openmpi-master-linux-x86_64-wheezy/openmpi-dev-845-ga3275aa/opal/class/opal_fifo.h:127 127 next = (opal_list_item_t *) item->opal_list_next; (gdb) print item $1 = (opal_list_item_t *) 0x0 (gdb) where #0 0x0000000000401568 in opal_fifo_pop_atomic (fifo=0x7fffffffe830) at /home/phargrov/OMPI/openmpi-master-linux-x86_64-wheezy/openmpi-dev-845-ga3275aa/opal/class/opal_fifo.h:127 #1 0x000000000040193d in thread_test_exhaust (arg=0x7fffffffe830) at /home/phargrov/OMPI/openmpi-master-linux-x86_64-wheezy/openmpi-dev-845-ga3275aa/test/class/opal_fifo.c:79 #2 0x00007ffff6ff9b50 in start_thread () from /lib/x86_64-linux-gnu/libpthread.so.0 #3 0x00007ffff6d4370d in clone () from /lib/x86_64-linux-gnu/libc.so.6 #4 0x0000000000000000 in ?? () -Paul -- Paul H. Hargrove phhargr...@lbl.gov Computer Languages & Systems Software (CLaSS) Group Computer Science Department Tel: +1-510-495-2352 Lawrence Berkeley National Laboratory Fax: +1-510-486-6900