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From: Murat Knecht (MKNECHT_at_[hidden])
Date: 2007-09-14 09:18:00


Hi all,

I get a segmentation fault when trying to spawn a single process on the
localhost (127.0.0.1).
I tried both the current stable 1.2.3 and the beta 1.2.4, both ended up the
same way.
>From the stack trace, i know it's the spawn call.
Is it possible that there is an error with authentification? (I accepted
the localhost certificates manually by opening up ssh-sessions.)

[loud2:15472] *** Process received signal ***
[loud2:15472] Signal: Segmentation fault (11)
[loud2:15472] Signal code: Address not mapped (1)
[loud2:15472] Failing at address: 0x2b7182ea7fe0
[loud2:15472] [ 0] /lib64/libpthread.so.0 [0x2b6983637c10]
[loud2:15472] [ 1] /usr/local/lib/libopen-pal.so.0(_int_free+0x26d)
[0x2b6982d75fdd]
[loud2:15472] [ 2] /usr/local/lib/libopen-pal.so.0(free+0xbd)
[0x2b6982d762fd]
[loud2:15472] [ 3] /usr/local/lib/libopen-rte.so.0 [0x2b6982c33146]
[loud2:15472] [ 4]
/usr/local/lib/libmpi.so.0(ompi_comm_start_processes+0xe61)
[0x2b6982a8a3a1]
[loud2:15472] [ 5] /usr/local/lib/libmpi.so.0(PMPI_Comm_spawn+0x13a)
[0x2b6982aaedfa]
[loud2:15472] [ 6]
queen(_ZNK3MPI9Intracomm5SpawnEPKcPS2_iRKNS_4InfoEi+0x5e) [0x41f64a]
[loud2:15472] [ 7]
queen(_ZN5blink5queen5Queen16startupLandscapeERKSsRSt4listINS0_4HostESaIS5_EE+0x9e2)
 [0x4222ae]
[loud2:15472] [ 8] queen(main+0x936) [0x428c4c]
[loud2:15472] [ 9] /lib64/libc.so.6(__libc_start_main+0xf4)
[0x2b698375e154]
[loud2:15472] [10] queen(__gxx_personality_v0+0xa9) [0x4183f9]
[loud2:15472] *** End of error message ***

All parameters are being checked for correctness, MPI::ARGV_NULL is used
for argv.
Is there a way to enable detailed logging, or are the mpirun - arguments
all there is? (In the FAQ and /var/log/ i did not find logs.)
Us there maybe a suggested solution to this problem, or do I have to debug
OpenMPI with gdb now?
Are there secret assumptions regarding the system this is running on? I had
a version of the program running on another machine already (no changes to
MPI related parts) ...
Btw, I very much welcome the recent thoughts about establishing a
documentation project. :)

Thanks for any hint!
Best regards
Murat

mkne_at_loud2:~/rep/DWA/queen> ompi_info -a
                Open MPI: 1.2.4b0
   Open MPI SVN revision: r15441
                Open RTE: 1.2.4b0
   Open RTE SVN revision: r15441
                    OPAL: 1.2.4b0
       OPAL SVN revision: r15441
           MCA backtrace: execinfo (MCA v1.0, API v1.0, Component v1.2.4)
              MCA memory: ptmalloc2 (MCA v1.0, API v1.0, Component v1.2.4)
           MCA paffinity: linux (MCA v1.0, API v1.0, Component v1.2.4)
           MCA maffinity: first_use (MCA v1.0, API v1.0, Component v1.2.4)
           MCA maffinity: libnuma (MCA v1.0, API v1.0, Component v1.2.4)
               MCA timer: linux (MCA v1.0, API v1.0, Component v1.2.4)
         MCA installdirs: env (MCA v1.0, API v1.0, Component v1.2.4)
         MCA installdirs: config (MCA v1.0, API v1.0, Component v1.2.4)
           MCA allocator: basic (MCA v1.0, API v1.0, Component v1.0)
           MCA allocator: bucket (MCA v1.0, API v1.0, Component v1.0)
                MCA coll: basic (MCA v1.0, API v1.0, Component v1.2.4)
                MCA coll: self (MCA v1.0, API v1.0, Component v1.2.4)
                MCA coll: sm (MCA v1.0, API v1.0, Component v1.2.4)
                MCA coll: tuned (MCA v1.0, API v1.0, Component v1.2.4)
                  MCA io: romio (MCA v1.0, API v1.0, Component v1.2.4)
               MCA mpool: rdma (MCA v1.0, API v1.0, Component v1.2.4)
               MCA mpool: sm (MCA v1.0, API v1.0, Component v1.2.4)
                 MCA pml: cm (MCA v1.0, API v1.0, Component v1.2.4)
                 MCA pml: ob1 (MCA v1.0, API v1.0, Component v1.2.4)
                 MCA bml: r2 (MCA v1.0, API v1.0, Component v1.2.4)
              MCA rcache: vma (MCA v1.0, API v1.0, Component v1.2.4)
                 MCA btl: self (MCA v1.0, API v1.0.1, Component v1.2.4)
                 MCA btl: sm (MCA v1.0, API v1.0.1, Component v1.2.4)
                 MCA btl: tcp (MCA v1.0, API v1.0.1, Component v1.0)
                MCA topo: unity (MCA v1.0, API v1.0, Component v1.2.4)
                 MCA osc: pt2pt (MCA v1.0, API v1.0, Component v1.2.4)
              MCA errmgr: hnp (MCA v1.0, API v1.3, Component v1.2.4)
              MCA errmgr: orted (MCA v1.0, API v1.3, Component v1.2.4)
              MCA errmgr: proxy (MCA v1.0, API v1.3, Component v1.2.4)
                 MCA gpr: null (MCA v1.0, API v1.0, Component v1.2.4)
                 MCA gpr: proxy (MCA v1.0, API v1.0, Component v1.2.4)
                 MCA gpr: replica (MCA v1.0, API v1.0, Component v1.2.4)
                 MCA iof: proxy (MCA v1.0, API v1.0, Component v1.2.4)
                 MCA iof: svc (MCA v1.0, API v1.0, Component v1.2.4)
                  MCA ns: proxy (MCA v1.0, API v2.0, Component v1.2.4)
                  MCA ns: replica (MCA v1.0, API v2.0, Component v1.2.4)
                 MCA oob: tcp (MCA v1.0, API v1.0, Component v1.0)
                 MCA ras: dash_host (MCA v1.0, API v1.3, Component v1.2.4)
                 MCA ras: gridengine (MCA v1.0, API v1.3, Component v1.2.4)
                 MCA ras: localhost (MCA v1.0, API v1.3, Component v1.2.4)
                 MCA ras: slurm (MCA v1.0, API v1.3, Component v1.2.4)
                 MCA rds: hostfile (MCA v1.0, API v1.3, Component v1.2.4)
                 MCA rds: proxy (MCA v1.0, API v1.3, Component v1.2.4)
                 MCA rds: resfile (MCA v1.0, API v1.3, Component v1.2.4)
               MCA rmaps: round_robin (MCA v1.0, API v1.3, Component
v1.2.4)
                MCA rmgr: proxy (MCA v1.0, API v2.0, Component v1.2.4)
                MCA rmgr: urm (MCA v1.0, API v2.0, Component v1.2.4)
                 MCA rml: oob (MCA v1.0, API v1.0, Component v1.2.4)
                 MCA pls: gridengine (MCA v1.0, API v1.3, Component v1.2.4)
                 MCA pls: proxy (MCA v1.0, API v1.3, Component v1.2.4)
                 MCA pls: rsh (MCA v1.0, API v1.3, Component v1.2.4)
                 MCA pls: slurm (MCA v1.0, API v1.3, Component v1.2.4)
                 MCA sds: env (MCA v1.0, API v1.0, Component v1.2.4)
                 MCA sds: pipe (MCA v1.0, API v1.0, Component v1.2.4)
                 MCA sds: seed (MCA v1.0, API v1.0, Component v1.2.4)
                 MCA sds: singleton (MCA v1.0, API v1.0, Component v1.2.4)
                 MCA sds: slurm (MCA v1.0, API v1.0, Component v1.2.4)
                  Prefix: /usr/local
                  Bindir: /usr/local/bin
                  Libdir: /usr/local/lib
                  Incdir: /usr/local/include
               Pkglibdir: /usr/local/lib/openmpi
              Sysconfdir: /usr/local/etc
 Configured architecture: x86_64-unknown-linux-gnu
           Configured by: root
           Configured on: Fri Sep 14 13:19:22 PDT 2007
          Configure host: loud2
                Built by: mkne
                Built on: Fri Sep 14 13:24:21 PDT 2007
              Built host: loud2
              C bindings: yes
            C++ bindings: yes
      Fortran77 bindings: no
      Fortran90 bindings: no
 Fortran90 bindings size: na
              C compiler: gcc
     C compiler absolute: /usr/bin/gcc
             C char size: 1
             C bool size: 1
            C short size: 2
              C int size: 4
             C long size: 8
            C float size: 4
           C double size: 8
          C pointer size: 8
            C char align: 1
            C bool align: 1
             C int align: 4
           C float align: 4
          C double align: 8
            C++ compiler: g++
   C++ compiler absolute: /usr/bin/g++
      Fortran77 compiler: gfortran
  Fortran77 compiler abs: /usr/bin/gfortran
      Fortran90 compiler: none
  Fortran90 compiler abs: none
       Fort integer size: 4
       Fort logical size: 4
 Fort logical value true: 0
          Fort real size: skipped
      Fort dbl prec size: skipped
          Fort cplx size: skipped
      Fort dbl cplx size: skipped
      Fort integer align: skipped
         Fort real align: skipped
     Fort dbl prec align: skipped
         Fort cplx align: skipped
     Fort dbl cplx align: skipped
             C profiling: yes
           C++ profiling: yes
     Fortran77 profiling: no
     Fortran90 profiling: no
          C++ exceptions: yes
          Thread support: posix (mpi: no, progress: no)
            Build CFLAGS: -O3 -DNDEBUG -finline-functions
-fno-strict-aliasing -pthread
          Build CXXFLAGS: -O3 -DNDEBUG -finline-functions -fexceptions
-pthread
            Build FFLAGS:
           Build FCFLAGS: -g -O2
           Build LDFLAGS: -export-dynamic -fexceptions
              Build LIBS: -lnsl -lutil -lm
    Wrapper extra CFLAGS: -pthread
  Wrapper extra CXXFLAGS: -fexceptions -pthread
    Wrapper extra FFLAGS:
   Wrapper extra FCFLAGS:
   Wrapper extra LDFLAGS:
      Wrapper extra LIBS: -ldl -Wl,--export-dynamic -lnsl -lutil -lm
-ldl
  Internal debug support: no
     MPI parameter check: runtime
Memory profiling support: no
Memory debugging support: no
         libltdl support: yes
   Heterogeneous support: yes
 mpirun default --prefix: no
                 MCA mca: parameter "mca_param_files" (current value:
"/home/mkne/.openmpi/mca-params.conf:/usr/local/etc/openmpi-mca-params.conf")
                          Path for MCA configuration files containing
default parameter values
                 MCA mca: parameter "mca_component_path" (current value:
"/usr/local/lib/openmpi:/home/mkne/.openmpi/components")
                          Path where to look for Open MPI and ORTE
components
                 MCA mca: parameter "mca_verbose" (current value: <none>)
                          Top-level verbosity parameter
                 MCA mca: parameter "mca_component_show_load_errors"
(current value: "1")
                          Whether to show errors for components that failed
to load or not
                 MCA mca: parameter "mca_component_disable_dlopen" (current
value: "0")
                          Whether to attempt to disable opening dynamic
components or not
                 MCA mpi: parameter "mpi_param_check" (current value: "1")
                          Whether you want MPI API parameters checked at
run-time or not. Possible values are 0 (no checking) and 1 (perform
checking at
                          run-time)
                 MCA mpi: parameter "mpi_yield_when_idle" (current value:
"0")
                          Yield the processor when waiting for MPI
communication (for MPI processes, will default to 1 when oversubscribing
nodes)
                 MCA mpi: parameter "mpi_event_tick_rate" (current value:
"-1")
                          How often to progress TCP communications (0 =
never, otherwise specified in microseconds)
                 MCA mpi: parameter "mpi_show_handle_leaks" (current value:
"0")
                          Whether MPI_FINALIZE shows all MPI handles that
were not freed or not
                 MCA mpi: parameter "mpi_no_free_handles" (current value:
"0")
                          Whether to actually free MPI objects when their
handles are freed
                 MCA mpi: parameter "mpi_show_mca_params" (current value:
"0")
                          Whether to show all MCA parameter value during
MPI_INIT or not (good for reproducability of MPI jobs)
                 MCA mpi: parameter "mpi_show_mca_params_file" (current
value: <none>)
                          If mpi_show_mca_params is true, setting this
string to a valid filename tells Open MPI to dump all the MCA parameter
values into a
                          file suitable for reading via the mca_param_files
parameter (good for reproducability of MPI jobs)
                 MCA mpi: parameter "mpi_paffinity_alone" (current value:
"0")
                          If nonzero, assume that this job is the only (set
of) process(es) running on each node and bind processes to processors,
starting
                          with processor ID 0
                 MCA mpi: parameter "mpi_keep_peer_hostnames" (current
value: "1")
                          If nonzero, save the string hostnames of all MPI
peer processes (mostly for error / debugging output messages). This can
add quite
                          a bit of memory usage to each MPI process.
                 MCA mpi: parameter "mpi_abort_delay" (current value: "0")
                          If nonzero, print out an identifying message when
MPI_ABORT is invoked (hostname, PID of the process that called MPI_ABORT)
and
                          delay for that many seconds before exiting (a
negative delay value means to never abort). This allows attaching of a
debugger
                          before quitting the job.
                 MCA mpi: parameter "mpi_abort_print_stack" (current value:
"0")
                          If nonzero, print out a stack trace when
MPI_ABORT is invoked
                 MCA mpi: parameter "mpi_preconnect_all" (current value:
"0")
                          Whether to force MPI processes to create
connections / warmup with *all* peers during MPI_INIT (vs. making
connections lazily --
                          upon the first MPI traffic between each process
peer pair)
                 MCA mpi: parameter "mpi_preconnect_oob" (current value:
"0")
                          Whether to force MPI processes to fully wire-up
the OOB system between MPI processes.
                 MCA mpi: parameter "mpi_leave_pinned" (current value: "0")
                          Whether to use the "leave pinned" protocol or
not. Enabling this setting can help bandwidth performance when repeatedly
sending
                          and receiving large messages with the same
buffers over RDMA-based networks.
                 MCA mpi: parameter "mpi_leave_pinned_pipeline" (current
value: "0")
                          Whether to use the "leave pinned pipeline"
protocol or not.
                MCA orte: parameter "orte_debug" (current value: "0")
                          Top-level ORTE debug switch
                MCA orte: parameter "orte_no_daemonize" (current value:
"0")
                          Whether to properly daemonize the ORTE daemons or
not
                MCA orte: parameter "orte_base_user_debugger" (current
value: "totalview @mpirun@ -a @mpirun_args@ : fxp @mpirun@ -a
@mpirun_args@")
                          Sequence of user-level debuggers to search for in
orterun
                MCA orte: parameter "orte_abort_timeout" (current value:
"10")
                          Time to wait [in seconds] before giving up on
aborting an ORTE operation
                MCA orte: parameter "orte_timing" (current value: "0")
                          Request that critical timing loops be measured
                MCA opal: parameter "opal_signal" (current value:
"6,7,8,11")
                          If a signal is received, display the stack trace
frame
           MCA backtrace: parameter "backtrace" (current value: <none>)
                          Default selection set of components for the
backtrace framework (<none> means "use all components that can be found")
           MCA backtrace: parameter "backtrace_base_verbose" (current
value: "0")
                          Verbosity level for the backtrace framework (0 =
no verbosity)
           MCA backtrace: parameter "backtrace_execinfo_priority" (current
value: "0")
              MCA memory: parameter "memory" (current value: <none>)
                          Default selection set of components for the
memory framework (<none> means "use all components that can be found")
              MCA memory: parameter "memory_base_verbose" (current value:
"0")
                          Verbosity level for the memory framework (0 = no
verbosity)
              MCA memory: parameter "memory_ptmalloc2_priority" (current
value: "0")
           MCA paffinity: parameter "paffinity" (current value: <none>)
                          Default selection set of components for the
paffinity framework (<none> means "use all components that can be found")
           MCA paffinity: parameter "paffinity_linux_priority" (current
value: "10")
                          Priority of the linux paffinity component
           MCA paffinity: information "paffinity_linux_have_cpu_set_t"
(value: "1")
                          Whether this component was compiled on a system
with the type cpu_set_t or not (1 = yes, 0 = no)
           MCA paffinity: information "paffinity_linux_CPU_ZERO_ok" (value:
"1")
                          Whether this component was compiled on a system
where CPU_ZERO() is functional or broken (1 = functional, 0 = broken/not
                          available)
           MCA paffinity: information
"paffinity_linux_sched_setaffinity_num_params" (value: "3")
                          The number of parameters that
sched_set_affinity() takes on the machine where this component was compiled
           MCA maffinity: parameter "maffinity" (current value: <none>)
                          Default selection set of components for the
maffinity framework (<none> means "use all components that can be found")
           MCA maffinity: parameter "maffinity_first_use_priority" (current
value: "10")
                          Priority of the first_use maffinity component
           MCA maffinity: parameter "maffinity_libnuma_priority" (current
value: "25")
                          Priority of the libnuma maffinity component
               MCA timer: parameter "timer" (current value: <none>)
                          Default selection set of components for the timer
framework (<none> means "use all components that can be found")
               MCA timer: parameter "timer_base_verbose" (current value:
"0")
                          Verbosity level for the timer framework (0 = no
verbosity)
               MCA timer: parameter "timer_linux_priority" (current value:
"0")
           MCA allocator: parameter "allocator" (current value: <none>)
                          Default selection set of components for the
allocator framework (<none> means "use all components that can be found")
           MCA allocator: parameter "allocator_base_verbose" (current
value: "0")
                          Verbosity level for the allocator framework (0 =
no verbosity)
           MCA allocator: parameter "allocator_basic_priority" (current
value: "0")
           MCA allocator: parameter "allocator_bucket_num_buckets" (current
value: "30")
           MCA allocator: parameter "allocator_bucket_priority" (current
value: "0")
                MCA coll: parameter "coll" (current value: <none>)
                          Default selection set of components for the coll
framework (<none> means "use all components that can be found")
                MCA coll: parameter "coll_base_verbose" (current value:
"0")
                          Verbosity level for the coll framework (0 = no
verbosity)
                MCA coll: parameter "coll_basic_priority" (current value:
"10")
                          Priority of the basic coll component
                MCA coll: parameter "coll_basic_crossover" (current value:
"4")
                          Minimum number of processes in a communicator
before using the logarithmic algorithms
                MCA coll: parameter "coll_self_priority" (current value:
"75")
                MCA coll: parameter "coll_sm_priority" (current value: "0")
                          Priority of the sm coll component
                MCA coll: parameter "coll_sm_control_size" (current value:
"4096")
                          Length of the control data -- should usually be
either the length of a cache line on most SMPs, or the size of a page on
machines
                          that support direct memory affinity page
placement (in bytes)
                MCA coll: parameter "coll_sm_bootstrap_filename" (current
value: "shared_mem_sm_bootstrap")
                          Filename (in the Open MPI session directory) of
the coll sm component bootstrap rendezvous mmap file
                MCA coll: parameter "coll_sm_bootstrap_num_segments"
(current value: "8")
                          Number of segments in the bootstrap file
                MCA coll: parameter "coll_sm_fragment_size" (current value:
"8192")
                          Fragment size (in bytes) used for passing data
through shared memory (will be rounded up to the nearest control_size size)
                MCA coll: parameter "coll_sm_mpool" (current value: "sm")
                          Name of the mpool component to use
                MCA coll: parameter "coll_sm_comm_in_use_flags" (current
value: "2")
                          Number of "in use" flags, used to mark a message
passing area segment as currently being used or not (must be >= 2 and <=
                          comm_num_segments)
                MCA coll: parameter "coll_sm_comm_num_segments" (current
value: "8")
                          Number of segments in each communicator's shared
memory message passing area (must be >= 2, and must be a multiple of
                          comm_in_use_flags)
                MCA coll: parameter "coll_sm_tree_degree" (current value:
"4")
                          Degree of the tree for tree-based operations
(must be => 1 and <= min(control_size, 255))
                MCA coll: information "coll_sm_shared_mem_used_bootstrap"
(value: "216")
                          Amount of shared memory used in the shared memory
bootstrap area (in bytes)
                MCA coll: parameter "coll_sm_info_num_procs" (current
value: "4")
                          Number of processes to use for the calculation of
the shared_mem_size MCA information parameter (must be => 2)
                MCA coll: information "coll_sm_shared_mem_used_data"
(value: "548864")
                          Amount of shared memory used in the shared memory
data area for info_num_procs processes (in bytes)
                MCA coll: parameter "coll_tuned_priority" (current value:
"30")
                          Priority of the tuned coll component
                MCA coll: parameter
"coll_tuned_pre_allocate_memory_comm_size_limit" (current value: "32768")
                          Size of communicator were we stop pre-allocating
memory for the fixed internal buffer used for message requests etc that is
hung
                          off the communicator data segment. I.e. if you
have a 100'000 nodes you might not want to pre-allocate 200'000 request
handle slots
                          per communicator instance!
                MCA coll: parameter "coll_tuned_init_tree_fanout" (current
value: "4")
                          Inital fanout used in the tree topologies for
each communicator. This is only an initial guess, if a tuned collective
needs a
                          different fanout for an operation, it build it
dynamically. This parameter is only for the first guess and might save a
little
                          time
                MCA coll: parameter "coll_tuned_init_chain_fanout" (current
value: "4")
                          Inital fanout used in the chain (fanout followed
by pipeline) topologies for each communicator. This is only an initial
guess, if a
                          tuned collective needs a different fanout for an
operation, it build it dynamically. This parameter is only for the first
guess and
                          might save a little time
                MCA coll: parameter "coll_tuned_use_dynamic_rules" (current
value: "0")
                          Switch used to decide if we use static
(compiled/if statements) or dynamic (built at runtime) decision function
rules
                  MCA io: parameter "io_base_freelist_initial_size"
(current value: "16")
                          Initial MPI-2 IO request freelist size
                  MCA io: parameter "io_base_freelist_max_size" (current
value: "64")
                          Max size of the MPI-2 IO request freelist
                  MCA io: parameter "io_base_freelist_increment" (current
value: "16")
                          Increment size of the MPI-2 IO request freelist
                  MCA io: parameter "io" (current value: <none>)
                          Default selection set of components for the io
framework (<none> means "use all components that can be found")
                  MCA io: parameter "io_base_verbose" (current value: "0")
                          Verbosity level for the io framework (0 = no
verbosity)
                  MCA io: parameter "io_romio_priority" (current value:
"10")
                          Priority of the io romio component
                  MCA io: parameter "io_romio_delete_priority" (current
value: "10")
                          Delete priority of the io romio component
                  MCA io: parameter
"io_romio_enable_parallel_optimizations" (current value: "0")
                          Enable set of Open MPI-added options to improve
collective file i/o performance
               MCA mpool: parameter "mpool" (current value: <none>)
                          Default selection set of components for the mpool
framework (<none> means "use all components that can be found")
               MCA mpool: parameter "mpool_base_verbose" (current value:
"0")
                          Verbosity level for the mpool framework (0 = no
verbosity)
               MCA mpool: parameter "mpool_rdma_rcache_name" (current
value: "vma")
                          The name of the registration cache the mpool
should use
               MCA mpool: parameter "mpool_rdma_rcache_size_limit" (current
value: "0")
                          the maximum size of registration cache in bytes.
0 is unlimited (default 0)
               MCA mpool: parameter "mpool_rdma_print_stats" (current
value: "0")
                          print pool usage statistics at the end of the run
               MCA mpool: parameter "mpool_rdma_priority" (current value:
"0")
               MCA mpool: parameter "mpool_sm_allocator" (current value:
"bucket")
                          Name of allocator component to use with sm mpool
               MCA mpool: parameter "mpool_sm_max_size" (current value:
"536870912")
                          Maximum size of the sm mpool shared memory file
               MCA mpool: parameter "mpool_sm_min_size" (current value:
"134217728")
                          Minimum size of the sm mpool shared memory file
               MCA mpool: parameter "mpool_sm_per_peer_size" (current
value: "33554432")
                          Size (in bytes) to allocate per local peer in the
sm mpool shared memory file, bounded by min_size and max_size
               MCA mpool: parameter "mpool_sm_priority" (current value:
"0")
               MCA mpool: parameter "mpool_base_use_mem_hooks" (current
value: "0")
                          use memory hooks for deregistering freed memory
               MCA mpool: parameter "mpool_use_mem_hooks" (current value:
"0")
                          (deprecated, use mpool_base_use_mem_hooks)
               MCA mpool: parameter "mpool_base_disable_sbrk" (current
value: "0")
                          use mallopt to override calling sbrk (doesn't
return memory to OS!)
               MCA mpool: parameter "mpool_disable_sbrk" (current value:
"0")
                          (deprecated, use mca_mpool_base_disable_sbrk)
                 MCA pml: parameter "pml" (current value: <none>)
                          Default selection set of components for the pml
framework (<none> means "use all components that can be found")
                 MCA pml: parameter "pml_base_verbose" (current value: "0")
                          Verbosity level for the pml framework (0 = no
verbosity)
                 MCA pml: parameter "pml_cm_free_list_num" (current value:
"4")
                          Initial size of request free lists
                 MCA pml: parameter "pml_cm_free_list_max" (current value:
"-1")
                          Maximum size of request free lists
                 MCA pml: parameter "pml_cm_free_list_inc" (current value:
"64")
                          Number of elements to add when growing request
free lists
                 MCA pml: parameter "pml_cm_priority" (current value: "30")
                          CM PML selection priority
                 MCA pml: parameter "pml_ob1_free_list_num" (current value:
"4")
                 MCA pml: parameter "pml_ob1_free_list_max" (current value:
"-1")
                 MCA pml: parameter "pml_ob1_free_list_inc" (current value:
"64")
                 MCA pml: parameter "pml_ob1_priority" (current value:
"20")
                 MCA pml: parameter "pml_ob1_eager_limit" (current value:
"131072")
                 MCA pml: parameter "pml_ob1_send_pipeline_depth" (current
value: "3")
                 MCA pml: parameter "pml_ob1_recv_pipeline_depth" (current
value: "4")
                 MCA bml: parameter "bml" (current value: <none>)
                          Default selection set of components for the bml
framework (<none> means "use all components that can be found")
                 MCA bml: parameter "bml_base_verbose" (current value: "0")
                          Verbosity level for the bml framework (0 = no
verbosity)
                 MCA bml: parameter "bml_r2_show_unreach_errors" (current
value: "1")
                          Show error message when procs are unreachable
                 MCA bml: parameter "bml_r2_priority" (current value: "0")
              MCA rcache: parameter "rcache" (current value: <none>)
                          Default selection set of components for the
rcache framework (<none> means "use all components that can be found")
              MCA rcache: parameter "rcache_base_verbose" (current value:
"0")
                          Verbosity level for the rcache framework (0 = no
verbosity)
              MCA rcache: parameter "rcache_vma_priority" (current value:
"0")
                 MCA btl: parameter "btl_base_debug" (current value: "0")
                          If btl_base_debug is 1 standard debug is output,
if > 1 verbose debug is output
                 MCA btl: parameter "btl" (current value: <none>)
                          Default selection set of components for the btl
framework (<none> means "use all components that can be found")
                 MCA btl: parameter "btl_base_verbose" (current value: "0")
                          Verbosity level for the btl framework (0 = no
verbosity)
                 MCA btl: parameter "btl_self_free_list_num" (current
value: "0")
                          Number of fragments by default
                 MCA btl: parameter "btl_self_free_list_max" (current
value: "-1")
                          Maximum number of fragments
                 MCA btl: parameter "btl_self_free_list_inc" (current
value: "32")
                          Increment by this number of fragments
                 MCA btl: parameter "btl_self_eager_limit" (current value:
"131072")
                          Eager size fragmeng (before the rendez-vous
ptotocol)
                 MCA btl: parameter "btl_self_min_send_size" (current
value: "262144")
                          Minimum fragment size after the rendez-vous
                 MCA btl: parameter "btl_self_max_send_size" (current
value: "262144")
                          Maximum fragment size after the rendez-vous
                 MCA btl: parameter "btl_self_min_rdma_size" (current
value: "2147483647")
                          Maximum fragment size for the RDMA transfer
                 MCA btl: parameter "btl_self_max_rdma_size" (current
value: "2147483647")
                          Maximum fragment size for the RDMA transfer
                 MCA btl: parameter "btl_self_exclusivity" (current value:
"65536")
                          Device exclusivity
                 MCA btl: parameter "btl_self_flags" (current value: "10")
                          Active behavior flags
                 MCA btl: parameter "btl_self_priority" (current value:
"0")
                 MCA btl: parameter "btl_sm_free_list_num" (current value:
"8")
                 MCA btl: parameter "btl_sm_free_list_max" (current value:
"-1")
                 MCA btl: parameter "btl_sm_free_list_inc" (current value:
"64")
                 MCA btl: parameter "btl_sm_exclusivity" (current value:
"65535")
                 MCA btl: parameter "btl_sm_latency" (current value: "100")
                 MCA btl: parameter "btl_sm_max_procs" (current value:
"-1")
                 MCA btl: parameter "btl_sm_sm_extra_procs" (current value:
"2")
                 MCA btl: parameter "btl_sm_mpool" (current value: "sm")
                 MCA btl: parameter "btl_sm_eager_limit" (current value:
"4096")
                 MCA btl: parameter "btl_sm_max_frag_size" (current value:
"32768")
                 MCA btl: parameter "btl_sm_size_of_cb_queue" (current
value: "128")
                 MCA btl: parameter "btl_sm_cb_lazy_free_freq" (current
value: "120")
                 MCA btl: parameter "btl_sm_priority" (current value: "0")
                 MCA btl: parameter "btl_tcp_if_include" (current value:
<none>)
                 MCA btl: parameter "btl_tcp_if_exclude" (current value:
"lo")
                 MCA btl: parameter "btl_tcp_free_list_num" (current value:
"8")
                 MCA btl: parameter "btl_tcp_free_list_max" (current value:
"-1")
                 MCA btl: parameter "btl_tcp_free_list_inc" (current value:
"32")
                 MCA btl: parameter "btl_tcp_sndbuf" (current value:
"131072")
                 MCA btl: parameter "btl_tcp_rcvbuf" (current value:
"131072")
                 MCA btl: parameter "btl_tcp_endpoint_cache" (current
value: "30720")
                 MCA btl: parameter "btl_tcp_exclusivity" (current value:
"0")
                 MCA btl: parameter "btl_tcp_eager_limit" (current value:
"65536")
                 MCA btl: parameter "btl_tcp_min_send_size" (current value:
"65536")
                 MCA btl: parameter "btl_tcp_max_send_size" (current value:
"131072")
                 MCA btl: parameter "btl_tcp_min_rdma_size" (current value:
"131072")
                 MCA btl: parameter "btl_tcp_max_rdma_size" (current value:
"2147483647")
                 MCA btl: parameter "btl_tcp_flags" (current value: "122")
                 MCA btl: parameter "btl_tcp_priority" (current value: "0")
                 MCA btl: parameter "btl_base_include" (current value:
<none>)
                 MCA btl: parameter "btl_base_exclude" (current value:
<none>)
                 MCA btl: parameter "btl_base_warn_component_unused"
(current value: "1")
                          This parameter is used to turn on warning
messages when certain NICs are not used
                 MCA mtl: parameter "mtl" (current value: <none>)
                          Default selection set of components for the mtl
framework (<none> means "use all components that can be found")
                 MCA mtl: parameter "mtl_base_verbose" (current value: "0")
                          Verbosity level for the mtl framework (0 = no
verbosity)
                MCA topo: parameter "topo" (current value: <none>)
                          Default selection set of components for the topo
framework (<none> means "use all components that can be found")
                MCA topo: parameter "topo_base_verbose" (current value:
"0")
                          Verbosity level for the topo framework (0 = no
verbosity)
                 MCA osc: parameter "osc" (current value: <none>)
                          Default selection set of components for the osc
framework (<none> means "use all components that can be found")
                 MCA osc: parameter "osc_base_verbose" (current value: "0")
                          Verbosity level for the osc framework (0 = no
verbosity)
                 MCA osc: parameter "osc_pt2pt_no_locks" (current value:
"0")
                          Enable optimizations available only if MPI_LOCK
is not used.
                 MCA osc: parameter "osc_pt2pt_eager_limit" (current value:
"16384")
                          Max size of eagerly sent data
                 MCA osc: parameter "osc_pt2pt_priority" (current value:
"0")
              MCA errmgr: parameter "errmgr" (current value: <none>)
                          Default selection set of components for the
errmgr framework (<none> means "use all components that can be found")
              MCA errmgr: parameter "errmgr_hnp_debug" (current value: "0")
              MCA errmgr: parameter "errmgr_hnp_priority" (current value:
"0")
              MCA errmgr: parameter "errmgr_orted_debug" (current value:
"0")
              MCA errmgr: parameter "errmgr_orted_priority" (current value:
"0")
              MCA errmgr: parameter "errmgr_proxy_debug" (current value:
"0")
              MCA errmgr: parameter "errmgr_proxy_priority" (current value:
"0")
                 MCA gpr: parameter "gpr_base_maxsize" (current value:
"2147483647")
                 MCA gpr: parameter "gpr_base_blocksize" (current value:
"512")
                 MCA gpr: parameter "gpr" (current value: <none>)
                          Default selection set of components for the gpr
framework (<none> means "use all components that can be found")
                 MCA gpr: parameter "gpr_null_priority" (current value:
"0")
                 MCA gpr: parameter "gpr_proxy_debug" (current value: "0")
                 MCA gpr: parameter "gpr_proxy_priority" (current value:
"0")
                 MCA gpr: parameter "gpr_replica_debug" (current value:
"0")
                 MCA gpr: parameter "gpr_replica_isolate" (current value:
"0")
                 MCA gpr: parameter "gpr_replica_priority" (current value:
"0")
                 MCA iof: parameter "iof_base_window_size" (current value:
"4096")
                 MCA iof: parameter "iof_base_service" (current value:
"0.0.0")
                 MCA iof: parameter "iof" (current value: <none>)
                          Default selection set of components for the iof
framework (<none> means "use all components that can be found")
                 MCA iof: parameter "iof_proxy_debug" (current value: "1")
                 MCA iof: parameter "iof_proxy_priority" (current value:
"0")
                 MCA iof: parameter "iof_svc_debug" (current value: "1")
                 MCA iof: parameter "iof_svc_priority" (current value: "0")
                  MCA ns: parameter "ns" (current value: <none>)
                          Default selection set of components for the ns
framework (<none> means "use all components that can be found")
                  MCA ns: parameter "ns_proxy_debug" (current value: "0")
                  MCA ns: parameter "ns_proxy_maxsize" (current value:
"2147483647")
                  MCA ns: parameter "ns_proxy_blocksize" (current value:
"512")
                  MCA ns: parameter "ns_proxy_priority" (current value:
"0")
                  MCA ns: parameter "ns_replica_debug" (current value: "0")
                  MCA ns: parameter "ns_replica_isolate" (current value:
"0")
                  MCA ns: parameter "ns_replica_maxsize" (current value:
"2147483647")
                  MCA ns: parameter "ns_replica_blocksize" (current value:
"512")
                  MCA ns: parameter "ns_replica_priority" (current value:
"0")
                 MCA oob: parameter "oob" (current value: <none>)
                          Default selection set of components for the oob
framework (<none> means "use all components that can be found")
                 MCA oob: parameter "oob_base_verbose" (current value: "0")
                          Verbosity level for the oob framework (0 = no
verbosity)
                 MCA oob: parameter "oob_tcp_peer_limit" (current value:
"-1")
                 MCA oob: parameter "oob_tcp_peer_retries" (current value:
"60")
                 MCA oob: parameter "oob_tcp_debug" (current value: "0")
                 MCA oob: parameter "oob_tcp_sndbuf" (current value:
"131072")
                 MCA oob: parameter "oob_tcp_rcvbuf" (current value:
"131072")
                 MCA oob: parameter "oob_tcp_if_include" (current value:
<none>)
                          Comma-delimited list of TCP interfaces to use
                 MCA oob: parameter "oob_tcp_if_exclude" (current value:
<none>)
                          Comma-delimited list of TCP interfaces to exclude
                 MCA oob: parameter "oob_tcp_connect_sleep" (current value:
"1")
                          Enable (1) / disable (0) random sleep for
connection wireup
                 MCA oob: parameter "oob_tcp_listen_mode" (current value:
"event")
                          Mode for HNP to accept incoming connections:
event, listen_thread
                 MCA oob: parameter "oob_tcp_listen_thread_max_queue"
(current value: "10")
                          High water mark for queued accepted socket list
size
                 MCA oob: parameter "oob_tcp_listen_thread_max_time"
(current value: "10")
                          Maximum amount of time (in milliseconds) to wait
between processing accepted socket list
                 MCA oob: parameter "oob_tcp_accept_spin_count" (current
value: "10")
                          Number of times to let accept return EWOULDBLOCK
before updating accepted socket list
                 MCA oob: parameter "oob_tcp_priority" (current value: "0")
                 MCA ras: parameter "ras" (current value: <none>)
                 MCA ras: parameter "ras_dash_host_priority" (current
value: "5")
                          Selection priority for the dash_host RAS
component
                 MCA ras: parameter "ras_gridengine_debug" (current value:
"0")
                          Enable debugging output for the gridengine ras
component
                 MCA ras: parameter "ras_gridengine_priority" (current
value: "100")
                          Priority of the gridengine ras component
                 MCA ras: parameter "ras_gridengine_verbose" (current
value: "0")
                          Enable verbose output for the gridengine ras
component
                 MCA ras: parameter "ras_gridengine_show_jobid" (current
value: "0")
                          Show the JOB_ID of the Grid Engine job
                 MCA ras: parameter "ras_localhost_priority" (current
value: "0")
                          Selection priority for the localhost RAS
component
                 MCA ras: parameter "ras_slurm_priority" (current value:
"75")
                          Priority of the slurm ras component
                 MCA rds: parameter "rds" (current value: <none>)
                 MCA rds: parameter "rds_hostfile_debug" (current value:
"0")
                          Toggle debug output for hostfile RDS component
                 MCA rds: parameter "rds_hostfile_path" (current value:
"/usr/local/etc/openmpi-default-hostfile")
                          ORTE Host filename
                 MCA rds: parameter "rds_hostfile_priority" (current value:
"0")
                 MCA rds: parameter "rds_proxy_priority" (current value:
"0")
                 MCA rds: parameter "rds_resfile_debug" (current value:
"0")
                          Toggle debug output for resfile RDS component
                 MCA rds: parameter "rds_resfile_name" (current value:
<none>)
                          ORTE Resource filename
                 MCA rds: parameter "rds_resfile_priority" (current value:
"0")
               MCA rmaps: parameter "rmaps_base_verbose" (current value:
"0")
                          Verbosity level for the rmaps framework
               MCA rmaps: parameter "rmaps_base_schedule_policy" (current
value: "unspec")
                          Scheduling Policy for RMAPS. [slot | node]
               MCA rmaps: parameter "rmaps_base_pernode" (current value:
"0")
                          Launch one ppn as directed
               MCA rmaps: parameter "rmaps_base_n_pernode" (current value:
"-1")
                          Launch n procs/node
               MCA rmaps: parameter "rmaps_base_no_schedule_local" (current
value: "0")
                          If false, allow scheduling MPI applications on
the same node as mpirun (default). If true, do not schedule any MPI
applications on
                          the same node as mpirun
               MCA rmaps: parameter "rmaps_base_no_oversubscribe" (current
value: "0")
                          If true, then do not allow oversubscription of
nodes - mpirun will return an error if there aren't enough nodes to launch
all
                          processes without oversubscribing
               MCA rmaps: parameter "rmaps" (current value: <none>)
                          Default selection set of components for the rmaps
framework (<none> means "use all components that can be found")
               MCA rmaps: parameter "rmaps_round_robin_debug" (current
value: "1")
                          Toggle debug output for Round Robin RMAPS
component
               MCA rmaps: parameter "rmaps_round_robin_priority" (current
value: "1")
                          Selection priority for Round Robin RMAPS
component
                MCA rmgr: parameter "rmgr" (current value: <none>)
                          Default selection set of components for the rmgr
framework (<none> means "use all components that can be found")
                MCA rmgr: parameter "rmgr_proxy_priority" (current value:
"0")
                MCA rmgr: parameter "rmgr_urm_priority" (current value:
"0")
                 MCA rml: parameter "rml" (current value: <none>)
                          Default selection set of components for the rml
framework (<none> means "use all components that can be found")
                 MCA rml: parameter "rml_base_verbose" (current value: "0")
                          Verbosity level for the rml framework (0 = no
verbosity)
                 MCA rml: parameter "rml_oob_priority" (current value: "0")
                 MCA pls: parameter "pls_base_reuse_daemons" (current
value: "0")
                          If nonzero, reuse daemons to launch dynamically
spawned processes. If zero, do not reuse daemons (default)
                 MCA pls: parameter "pls" (current value: <none>)
                          Default selection set of components for the pls
framework (<none> means "use all components that can be found")
                 MCA pls: parameter "pls_base_verbose" (current value: "0")
                          Verbosity level for the pls framework (0 = no
verbosity)
                 MCA pls: parameter "pls_gridengine_debug" (current value:
"0")
                          Enable debugging of gridengine pls component
                 MCA pls: parameter "pls_gridengine_verbose" (current
value: "0")
                          Enable verbose output of the gridengine qrsh
-inherit command
                 MCA pls: parameter "pls_gridengine_priority" (current
value: "100")
                          Priority of the gridengine pls component
                 MCA pls: parameter "pls_gridengine_orted" (current value:
"orted")
                          The command name that the gridengine pls
component will invoke for the ORTE daemon
                 MCA pls: parameter "pls_proxy_priority" (current value:
"0")
                 MCA pls: parameter "pls_rsh_debug" (current value: "0")
                          Whether or not to enable debugging output for the
rsh pls component (0 or 1)
                 MCA pls: parameter "pls_rsh_num_concurrent" (current
value: "128")
                          How many pls_rsh_agent instances to invoke
concurrently (must be > 0)
                 MCA pls: parameter "pls_rsh_force_rsh" (current value:
"0")
                          Force the launcher to always use rsh, even for
local daemons
                 MCA pls: parameter "pls_rsh_orted" (current value:
"orted")
                          The command name that the rsh pls component will
invoke for the ORTE daemon
                 MCA pls: parameter "pls_rsh_priority" (current value:
"10")
                          Priority of the rsh pls component
                 MCA pls: parameter "pls_rsh_delay" (current value: "1")
                          Delay (in seconds) between invocations of the
remote agent, but only used when the "debug" MCA parameter is true, or the
top-level
                          MCA debugging is enabled (otherwise this value is
ignored)
                 MCA pls: parameter "pls_rsh_reap" (current value: "1")
                          If set to 1, wait for all the processes to
complete before exiting. Otherwise, quit immediately -- without waiting
for
                          confirmation that all other processes in the job
have completed.
                 MCA pls: parameter "pls_rsh_assume_same_shell" (current
value: "1")
                          If set to 1, assume that the shell on the remote
node is the same as the shell on the local node. Otherwise, probe for what
the
                          remote shell.
                 MCA pls: parameter "pls_rsh_agent" (current value: "ssh :
rsh")
                          The command used to launch executables on remote
nodes (typically either "ssh" or "rsh")
                 MCA pls: parameter "pls_slurm_debug" (current value: "0")
                          Enable debugging of slurm pls
                 MCA pls: parameter "pls_slurm_priority" (current value:
"75")
                          Default selection priority
                 MCA pls: parameter "pls_slurm_orted" (current value:
"orted")
                          Command to use to start proxy orted
                 MCA pls: parameter "pls_slurm_args" (current value:
<none>)
                          Custom arguments to srun
                 MCA sds: parameter "sds" (current value: <none>)
                          Default selection set of components for the sds
framework (<none> means "use all components that can be found")
                 MCA sds: parameter "sds_base_verbose" (current value: "0")
                          Verbosity level for the sds framework (0 = no
verbosity)
                 MCA sds: parameter "sds_env_priority" (current value: "0")
                 MCA sds: parameter "sds_pipe_priority" (current value:
"0")
                 MCA sds: parameter "sds_seed_priority" (current value:
"0")
                 MCA sds: parameter "sds_singleton_priority" (current
value: "0")
                 MCA sds: parameter "sds_slurm_priority" (current value:
"0")