Ralph, somewhere in ./orte/mca/oob/tcp/oob_tcp.c, there is this comment:
orte_node_rank_t nrank; /* do I know my node_local_rank yet? */ if (ORTE_NODE_RANK_INVALID != (nrank = orte_ess.get_node_rank(ORTE_PROC_MY_NAME)) && (nrank+1) < opal_argv_count(mca_oob_tcp_component.tcp4_static_ports)) { /* any daemon takes the first entry, so we start with the second */ which seems constant with process #0 listening on 10001. the question would be why process #1 attempt to connect to port 10000 then? or maybe totally unrelated :-) btw, if I trick process #1 to open the connection to 10001 by shifting the range, I now get this error and the process terminate immediately: [c0301b10e1:03919] [[0,9999],1]-[[0,0],0] mca_oob_tcp_peer_recv_connect_ack: received unexpected process identifier [[0,9999],0] good luck with the surgery and wishing you a prompt recovery! p. On Thu, Aug 19, 2010 at 2:02 PM, Ralph Castain <r...@open-mpi.org> wrote: > Something doesn't look right - here is what the algo attempts to do: > given a port range of 10000-12000, the lowest rank'd process on the node > should open port 10000. The next lowest rank on the node will open 10001, > etc. > So it looks to me like there is some confusion in the local rank algo. I'll > have to look at the generic module - must be a bug in it somewhere. > This might take a couple of days as I have surgery tomorrow morning, so > please forgive the delay. > > On Thu, Aug 19, 2010 at 11:13 AM, Philippe <phil...@mytoaster.net> wrote: >> >> Ralph, >> >> I'm able to use the generic module when the processes are on different >> machines. >> >> what would be the values of the EV when two processes are on the same >> machine (hopefully talking over SHM). >> >> i've played with combination of nodelist and ppn but no luck. I get errors >> like: >> >> >> >> [c0301b10e1:03172] [[0,9999],1] -> [[0,0],0] (node: c0301b10e1) >> oob-tcp: Number of attempts to create TCP connection has been >> exceeded. Can not communicate with peer >> [c0301b10e1:03172] [[0,9999],1] ORTE_ERROR_LOG: Unreachable in file >> grpcomm_hier_module.c at line 303 >> [c0301b10e1:03172] [[0,9999],1] ORTE_ERROR_LOG: Unreachable in file >> base/grpcomm_base_modex.c at line 470 >> [c0301b10e1:03172] [[0,9999],1] ORTE_ERROR_LOG: Unreachable in file >> grpcomm_hier_module.c at line 484 >> -------------------------------------------------------------------------- >> It looks like MPI_INIT failed for some reason; your parallel process is >> likely to abort. There are many reasons that a parallel process can >> fail during MPI_INIT; some of which are due to configuration or >> environment >> problems. This failure appears to be an internal failure; here's some >> additional information (which may only be relevant to an Open MPI >> developer): >> >> orte_grpcomm_modex failed >> --> Returned "Unreachable" (-12) instead of "Success" (0) >> -------------------------------------------------------------------------- >> *** The MPI_Init() function was called before MPI_INIT was invoked. >> *** This is disallowed by the MPI standard. >> *** Your MPI job will now abort. >> [c0301b10e1:3172] Abort before MPI_INIT completed successfully; not >> able to guarantee that all other processes were killed! >> >> >> maybe a related question is how to assign the TCP port range and how >> is it used? when the processes are on different machines, I use the >> same range and that's ok as long as the range is free. but when the >> processes are on the same node, what value should the range be for >> each process? My range is 10000-12000 (for both processes) and I see >> that process with rank #0 listen on port 10001 while process with rank >> #1 try to establish a connect to port 10000. >> >> Thanks so much! >> p. still here... still trying... ;-) >> >> On Tue, Jul 27, 2010 at 12:58 AM, Ralph Castain <r...@open-mpi.org> wrote: >> > Use what hostname returns - don't worry about IP addresses as we'll >> > discover them. >> > >> > On Jul 26, 2010, at 10:45 PM, Philippe wrote: >> > >> >> Thanks a lot! >> >> >> >> now, for the ev "OMPI_MCA_orte_nodes", what do I put exactly? our >> >> nodes have a short/long name (it's rhel 5.x, so the command hostname >> >> returns the long name) and at least 2 IP addresses. >> >> >> >> p. >> >> >> >> On Tue, Jul 27, 2010 at 12:06 AM, Ralph Castain <r...@open-mpi.org> >> >> wrote: >> >>> Okay, fixed in r23499. Thanks again... >> >>> >> >>> >> >>> On Jul 26, 2010, at 9:47 PM, Ralph Castain wrote: >> >>> >> >>>> Doh - yes it should! I'll fix it right now. >> >>>> >> >>>> Thanks! >> >>>> >> >>>> On Jul 26, 2010, at 9:28 PM, Philippe wrote: >> >>>> >> >>>>> Ralph, >> >>>>> >> >>>>> i was able to test the generic module and it seems to be working. >> >>>>> >> >>>>> one question tho, the function orte_ess_generic_component_query in >> >>>>> "orte/mca/ess/generic/ess_generic_component.c" calls getenv with the >> >>>>> argument "OMPI_MCA_enc", which seems to cause the module to fail to >> >>>>> load. shouldnt it be "OMPI_MCA_ess" ? >> >>>>> >> >>>>> ..... >> >>>>> >> >>>>> /* only pick us if directed to do so */ >> >>>>> if (NULL != (pick = getenv("OMPI_MCA_env")) && >> >>>>> 0 == strcmp(pick, "generic")) { >> >>>>> *priority = 1000; >> >>>>> *module = (mca_base_module_t *)&orte_ess_generic_module; >> >>>>> >> >>>>> ... >> >>>>> >> >>>>> p. >> >>>>> >> >>>>> On Thu, Jul 22, 2010 at 5:53 PM, Ralph Castain <r...@open-mpi.org> >> >>>>> wrote: >> >>>>>> Dev trunk looks okay right now - I think you'll be fine using it. >> >>>>>> My new component -might- work with 1.5, but probably not with 1.4. I >> >>>>>> haven't >> >>>>>> checked either of them. >> >>>>>> >> >>>>>> Anything at r23478 or above will have the new module. Let me know >> >>>>>> how it works for you. I haven't tested it myself, but am pretty sure >> >>>>>> it >> >>>>>> should work. >> >>>>>> >> >>>>>> >> >>>>>> On Jul 22, 2010, at 3:22 PM, Philippe wrote: >> >>>>>> >> >>>>>>> Ralph, >> >>>>>>> >> >>>>>>> Thank you so much!! >> >>>>>>> >> >>>>>>> I'll give it a try and let you know. >> >>>>>>> >> >>>>>>> I know it's a tough question, but how stable is the dev trunk? Can >> >>>>>>> I >> >>>>>>> just grab the latest and run, or am I better off taking your >> >>>>>>> changes >> >>>>>>> and copy them back in a stable release? (if so, which one? 1.4? >> >>>>>>> 1.5?) >> >>>>>>> >> >>>>>>> p. >> >>>>>>> >> >>>>>>> On Thu, Jul 22, 2010 at 3:50 PM, Ralph Castain <r...@open-mpi.org> >> >>>>>>> wrote: >> >>>>>>>> It was easier for me to just construct this module than to >> >>>>>>>> explain how to do so :-) >> >>>>>>>> >> >>>>>>>> I will commit it this evening (couple of hours from now) as that >> >>>>>>>> is our standard practice. You'll need to use the developer's trunk, >> >>>>>>>> though, >> >>>>>>>> to use it. >> >>>>>>>> >> >>>>>>>> Here are the envars you'll need to provide: >> >>>>>>>> >> >>>>>>>> Each process needs to get the same following values: >> >>>>>>>> >> >>>>>>>> * OMPI_MCA_ess=generic >> >>>>>>>> * OMPI_MCA_orte_num_procs=<number of MPI procs> >> >>>>>>>> * OMPI_MCA_orte_nodes=<a comma-separated list of nodenames where >> >>>>>>>> MPI procs reside> >> >>>>>>>> * OMPI_MCA_orte_ppn=<number of procs/node> >> >>>>>>>> >> >>>>>>>> Note that I have assumed this last value is a constant for >> >>>>>>>> simplicity. If that isn't the case, let me know - you could instead >> >>>>>>>> provide >> >>>>>>>> it as a comma-separated list of values with an entry for each node. >> >>>>>>>> >> >>>>>>>> In addition, you need to provide the following value that will be >> >>>>>>>> unique to each process: >> >>>>>>>> >> >>>>>>>> * OMPI_MCA_orte_rank=<MPI rank> >> >>>>>>>> >> >>>>>>>> Finally, you have to provide a range of static TCP ports for use >> >>>>>>>> by the processes. Pick any range that you know will be available >> >>>>>>>> across all >> >>>>>>>> the nodes. You then need to ensure that each process sees the >> >>>>>>>> following >> >>>>>>>> envar: >> >>>>>>>> >> >>>>>>>> * OMPI_MCA_oob_tcp_static_ports=6000-6010 <== obviously, replace >> >>>>>>>> this with your range >> >>>>>>>> >> >>>>>>>> You will need a port range that is at least equal to the ppn for >> >>>>>>>> the job (each proc on a node will take one of the provided ports). >> >>>>>>>> >> >>>>>>>> That should do it. I compute everything else I need from those >> >>>>>>>> values. >> >>>>>>>> >> >>>>>>>> Does that work for you? >> >>>>>>>> Ralph >> >>>>>>>> >> >>>>>>>> >> >> >> >> _______________________________________________ >> >> users mailing list >> >> us...@open-mpi.org >> >> http://www.open-mpi.org/mailman/listinfo.cgi/users >> > >> > >> > _______________________________________________ >> > users mailing list >> > us...@open-mpi.org >> > http://www.open-mpi.org/mailman/listinfo.cgi/users >> > >> >> _______________________________________________ >> users mailing list >> us...@open-mpi.org >> http://www.open-mpi.org/mailman/listinfo.cgi/users > > _______________________________________________ > users mailing list > us...@open-mpi.org > http://www.open-mpi.org/mailman/listinfo.cgi/users >