Failure to stop at MPIR_Breakpoint on Power systems with OpenMPI v3.0.x #5501
Description
Background information
What version of Open MPI are you using? (e.g., v1.10.3, v2.1.0, git branch name and hash, etc.)
v3.0.0 and v3.0.2
Describe how Open MPI was installed (e.g., from a source/distribution tarball, from a git clone, from an operating system distribution package, etc.)
from source tarball with PGI 18.1 or IBM 16.1.1 Beta 2 compilers
Please describe the system on which you are running
- Operating system/version: RHEL7
- Computer hardware: ppc64le
- Network type: self
Details of the problem
GDB is unable to stop at MPIR_Breakpoint when debugging the mpirun process using the MPIR interface on the above system with the above compilers.
Here are the steps to reproduce with the simple hello_c program from #5349:
$ mpirun --version
mpirun (Open MPI) 3.0.2
Report bugs to http://www.open-mpi.org/community/help/
$ gdb --quiet --args mpirun -np 2 ./hello_c
Reading symbols from /software/mpi/openmpi-3.0.2_pgi-18.1/bin/orterun...done.
(gdb) start
Temporary breakpoint 1 at 0x100010dc: file main.c, line 13.
Starting program: /software/mpi/openmpi-3.0.2_pgi-18.1/bin/mpirun -np 2 ./hello_c
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/lib64/power8/libthread_db.so.1".
Temporary breakpoint 1, main () at main.c:13
13 main.c: No such file or directory.
Missing separate debuginfos, use: debuginfo-install glibc-2.17-106.el7_2.8.ppc64le zlib-1.2.7-15.el7.ppc64le
(gdb) set MPIR_being_debugged=1
(gdb) break MPIR_Breakpoint
Breakpoint 2 at 0x3fffb7f3fec0: file orted/orted_submit.c, line 182.
(gdb) continue
Continuing.
[New Thread 0x3fffb738f1d0 (LWP 47821)]
[New Thread 0x3fffb6b8f1d0 (LWP 47822)]
[New Thread 0x3fffb602f1d0 (LWP 47824)]
[New Thread 0x3fffb582f1d0 (LWP 47825)]
Detaching after fork from child process 47826.
Detaching after fork from child process 47827.
My rank is 0.
My pid is 47826.
My rank is 1.
My pid is 47827.
[Thread 0x3fffb602f1d0 (LWP 47824) exited]
[Thread 0x3fffb582f1d0 (LWP 47825) exited]
[Thread 0x3fffb6b8f1d0 (LWP 47822) exited]
[Thread 0x3fffb738f1d0 (LWP 47821) exited]
[Inferior 1 (process 47806) exited normally]
(gdb)