Hi Ashley I dug into this deeper and fixed the problem last night. We were actually hanging on the send operation as the recvr (a stale HNP, in this case) wasn't there. I had to use a non-blocking send and put a timeout around it so we could escape that situation.
I also had to change a couple of tests to ensure we knew when to print local help messages vs sending them to an HNP. I have tested the result in a scenario where several stale HNP contact files existed and it worked fine. See if it works for you. I'll tinker with it to print out a complete list of the stale HNPs later. Ralph On Tue, May 19, 2009 at 7:07 AM, Ashley Pittman <ash...@pittman.co.uk>wrote: > > Ralph, > > At least part of them problem is to do with error reporting, orte-ps is > hitting the error case for a stale hnp at around line 258 and is trying > to report the error via orte_show_help() however this function is > calling a rpc into the orted-run which is silently ignoring it for some > reason. > > The failure itself seems to come from a timeout in comm.c:1114 where the > client process isn't waiting long enough for the orted-run to reply and > is returning ORTE_ERR_SILENT instead. I can't think what to suggest > here other than increasing the timeout? > > Ashley, > > On Mon, 2009-05-18 at 17:06 +0100, Ashley Pittman wrote: > > It's certainly helped and now runs for me however if I run mpirun under > > valgrind and then opmi-ps in another window Valgrind reports errors and > > ompi-ps doesn't list the job so there is clearly something still amiss. > > I'm trying to do some more diagnostics now. > > > > ==32362== Syscall param writev(vector[...]) points to uninitialised > > byte(s) > > ==32362== at 0x41BF10C: writev (writev.c:46) > > ==32362== by 0x4EAAD52: mca_oob_tcp_msg_send_handler > > (in > /mnt/home/debian/ashley/code/OpenMPI/install/lib/openmpi/mca_oob_tcp.so) > > ==32362== by 0x4EAC505: mca_oob_tcp_peer_send > > (in > /mnt/home/debian/ashley/code/OpenMPI/install/lib/openmpi/mca_oob_tcp.so) > > ==32362== by 0x4EAEF89: mca_oob_tcp_send_nb > > (in > /mnt/home/debian/ashley/code/OpenMPI/install/lib/openmpi/mca_oob_tcp.so) > > ==32362== by 0x4EA20BE: orte_rml_oob_send > > (in > /mnt/home/debian/ashley/code/OpenMPI/install/lib/openmpi/mca_rml_oob.so) > > ==32362== by 0x4EA2359: orte_rml_oob_send_buffer > > (in > /mnt/home/debian/ashley/code/OpenMPI/install/lib/openmpi/mca_rml_oob.so) > > ==32362== by 0x4050738: process_commands > > (in > /mnt/home/debian/ashley/code/OpenMPI/install/lib/libopen-rte.so.0.0.0) > > ==32362== by 0x405108C: orte_daemon_cmd_processor > > (in > /mnt/home/debian/ashley/code/OpenMPI/install/lib/libopen-rte.so.0.0.0) > > ==32362== by 0x4260B57: opal_event_base_loop > > (in > /mnt/home/debian/ashley/code/OpenMPI/install/lib/libopen-pal.so.0.0.0) > > ==32362== by 0x4260DF6: opal_event_loop > > (in > /mnt/home/debian/ashley/code/OpenMPI/install/lib/libopen-pal.so.0.0.0) > > ==32362== by 0x4260E1D: opal_event_dispatch > > (in > /mnt/home/debian/ashley/code/OpenMPI/install/lib/libopen-pal.so.0.0.0) > > ==32362== by 0x804B15F: orterun (orterun.c:757) > > ==32362== Address 0x448507c is 20 bytes inside a block of size 512 > > alloc'd > > ==32362== at 0x402613C: realloc (vg_replace_malloc.c:429) > > ==32362== by 0x42556B7: opal_dss_buffer_extend > > (in > /mnt/home/debian/ashley/code/OpenMPI/install/lib/libopen-pal.so.0.0.0) > > ==32362== by 0x4256C4F: opal_dss_pack_int32 > > (in > /mnt/home/debian/ashley/code/OpenMPI/install/lib/libopen-pal.so.0.0.0) > > ==32362== by 0x42565C9: opal_dss_pack_buffer > > (in > /mnt/home/debian/ashley/code/OpenMPI/install/lib/libopen-pal.so.0.0.0) > > ==32362== by 0x403A60D: orte_dt_pack_job > > (in > /mnt/home/debian/ashley/code/OpenMPI/install/lib/libopen-rte.so.0.0.0) > > ==32362== by 0x42565C9: opal_dss_pack_buffer > > (in > /mnt/home/debian/ashley/code/OpenMPI/install/lib/libopen-pal.so.0.0.0) > > ==32362== by 0x4256FFB: opal_dss_pack > > (in > /mnt/home/debian/ashley/code/OpenMPI/install/lib/libopen-pal.so.0.0.0) > > ==32362== by 0x40506F7: process_commands > > (in > /mnt/home/debian/ashley/code/OpenMPI/install/lib/libopen-rte.so.0.0.0) > > ==32362== by 0x405108C: orte_daemon_cmd_processor > > (in > /mnt/home/debian/ashley/code/OpenMPI/install/lib/libopen-rte.so.0.0.0) > > ==32362== by 0x4260B57: opal_event_base_loop > > (in > /mnt/home/debian/ashley/code/OpenMPI/install/lib/libopen-pal.so.0.0.0) > > ==32362== by 0x4260DF6: opal_event_loop > > (in > /mnt/home/debian/ashley/code/OpenMPI/install/lib/libopen-pal.so.0.0.0) > > ==32362== by 0x4260E1D: opal_event_dispatch > > (in > /mnt/home/debian/ashley/code/OpenMPI/install/lib/libopen-pal.so.0.0.0) > > > > On Mon, 2009-05-18 at 08:22 -0600, Ralph Castain wrote: > > > Aha! Thanks for spotting the problem - I had to move that var init to > > > cover all cases, but it should be working now with r21249 > > > > > > > > > > > > On May 18, 2009, at 8:08 AM, Ashley Pittman wrote: > > > > > > > > > > > Ralph, > > > > > > > > This patch fixed it, num_nodes was being used initialised and hence > > > > the > > > > client was getting a bogus value for the number of nodes. > > > > > > > > Ashley, > > > > > > > > On Mon, 2009-05-18 at 10:09 +0100, Ashley Pittman wrote: > > > >> No joy I'm afraid, now I get errors when I run it. This is a > single > > > >> node job run with the command line "mpirun -n 3 ./a.out". I've > > > >> attached > > > >> the strace output and gzipped /tmp files from the machine. > > > >> Valgrind on > > > >> the opmi-ps process doesn't show anything interesting. > > > >> > > > >> [alpha:29942] [[35044,0],0] ORTE_ERROR_LOG: Data unpack would read > > > >> past > > > >> end of buffer in > > > >> file /mnt/home/debian/ashley/code/OpenMPI/ompi-trunk-tes/trunk/orte/ > > > >> util/comm/comm.c at line 242 > > > >> [alpha:29942] [[35044,0],0] ORTE_ERROR_LOG: Data unpack would read > > > >> past > > > >> end of buffer in > > > >> file /mnt/home/debian/ashley/code/OpenMPI/ompi-trunk-tes/trunk/orte/ > > > >> tools/orte-ps/orte-ps.c at line 818 > > > >> > > > >> Ashley. > > > >> > > > >> On Sat, 2009-05-16 at 08:15 -0600, Ralph Castain wrote: > > > >>> This is fixed now, Ashley - sorry for the problem. > > > >>> > > > >>> > > > >>> On May 15, 2009, at 4:47 AM, Ashley Pittman wrote: > > > >>> > > > >>>> On Thu, 2009-05-14 at 22:49 -0600, Ralph Castain wrote: > > > >>>>> It is definitely broken at the moment, Ashley. I have it pretty > > > >>>>> well > > > >>>>> fixed, but need/want to cleanup some corner cases that have > > > >>>>> plagued > > > >>>>> us > > > >>>>> for a long time. > > > >>>>> > > > >>>>> Should have it for you sometime Friday. > > > >>>> > > > >>>> Ok, thanks. I might try switching to slurm in the mean-time, I > > > >>>> know > > > >>>> my > > > >>>> code works with that. > > > >>>> > > > >>>> Can you let me know when it's fixed on or off list and I'll do an > > > >>>> update. > > > >>>> > > > >>>> Ashley, > > > >>>> > > > >>>> _______________________________________________ > > > >>>> devel mailing list > > > >>>> de...@open-mpi.org > > > >>>> http://www.open-mpi.org/mailman/listinfo.cgi/devel > > > >>> > > > >>> _______________________________________________ > > > >>> devel mailing list > > > >>> de...@open-mpi.org > > > >>> http://www.open-mpi.org/mailman/listinfo.cgi/devel > > > >> _______________________________________________ > > > >> devel mailing list > > > >> de...@open-mpi.org > > > >> http://www.open-mpi.org/mailman/listinfo.cgi/devel > > > > <ompi-ps.patch>_______________________________________________ > > > > devel mailing list > > > > de...@open-mpi.org > > > > http://www.open-mpi.org/mailman/listinfo.cgi/devel > > > > > > _______________________________________________ > > > devel mailing list > > > de...@open-mpi.org > > > http://www.open-mpi.org/mailman/listinfo.cgi/devel > > > > _______________________________________________ > > devel mailing list > > de...@open-mpi.org > > http://www.open-mpi.org/mailman/listinfo.cgi/devel > > _______________________________________________ > devel mailing list > de...@open-mpi.org > http://www.open-mpi.org/mailman/listinfo.cgi/devel >
