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LIBPVM(3PVM)			PVM Version 3.4			  LIBPVM(3PVM)

NAME
       libpvm3.a, libfpvm3.a - PVM C and Fortran programming libraries

DESCRIPTION
       All  PVM	 applications  must be linked with the libpvm library to allow
       them to communicate with other entities in the PVM  system.   The  base
       library	(libpvm3.a)  is	 written  in C and directly supports C and C++
       applications.  The Fortran library  (libfpvm3.a)	 consists  of  wrapper
       functions to convert Fortran calling sequences to C.

       Applications  written  in  C  must be linked with at least the base PVM
       library, libpvm3.a.  Fortran applications  must	be  linked  with  both
       libfpvm3.a and libpvm3.a.  On some operating systems, PVM programs must
       be linked with other vendor-provided libraries (containing for example,
       socket or XDR functions).

       Programs that use group functions must also be linked with libgpvm3.a.

SUBROUTINES
       The libpvm subroutines can be divided into roughly five classes:

       Message Passing
	      pvm_bufinfo,  pvm_freebuf,  pvm_getrbuf,	pvm_getsbuf, pvm_init‐
	      send,  pvm_mcast,	 pvm_mkbuf,  pvm_nrecv,	 pvm_pack,  pvm_precv,
	      pvm_probe,  pvm_psend,  pvm_recv, pvm_recvf, pvm_send, pvm_send‐
	      sig,   pvm_setmwid,   pvm_setrbuf,    pvm_setsbuf,    pvm_trecv,
	      pvm_unpack

       Task Control
	      pvm_exit, pvm_kill, pvm_mytid, pvm_parent, pvm_pstat, pvm_spawn,
	      pvm_tasks

       Group Library Functions
	      pvm_barrier,  pvm_bcast,	pvm_gather,  pvm_getinst,  pvm_gettid,
	      pvm_gsize, pvm_joingroup, pvm_lvgroup, pvm_reduce, pvm_scatter

       Virtual Machine Control
	      pvm_addhosts,  pvm_config,  pvm_delhosts,	 pvm_halt,  pvm_mstat,
	      pvm_reg_hoster, pvm_reg_rm, pvm_reg_tasker, pvm_start_pvmd

       Miscellaneous
	      pvm_archcode,    pvm_catchout,	 pvm_getopt,	 pvm_hostsync,
	      pvm_notify, pvm_perror, pvm_setopt, pvm_settmask, pvm_tidtohost

ERRORS
       On  success, most libpvm functions return the constant PvmOk.  The fol‐
       lowing error conditions can be returned by libpvm functions:

       PvmAlready
	      The requested operation requires exclusive access,  and  another
	      was already in progress.

       PvmBadMsg
	      The  received  messages  has  a  data  format  native to another
	      machine, which cannot be decoded by libpvm.

       PvmBadParam
	      A bad parameter was passed to the function.

       PvmBadVersion
	      Two PVM components (pvmd and task, two pvmds or two tasks)  have
	      incompatible protocol versions and cannot interoperate.  Version
	      mismatch

       PvmCantStart
	      A pvmd could not be started on the local host, or a  slave  pvmd
	      could not be started on a remote host.

       PvmDSysErr
	      Some  internal mechanism in the pvmd failed during the requested
	      operation.

       PvmDupEntry
	      The class server	already	 has  an  entry	 matching  the	insert
	      request.	[In Version 3.4: Relaced by PvmExists]

       PvmDupGroup
	      The task has already a member of the group it attempted to join.

       PvmDupHost
	      An  attempt  was	made to add the same host to a virtual machine
	      more than once, or to add a host already	a  member  of  another
	      virtual machine owned by the same user.

       PvmDenied
	      Operation is refused due to locking, permissions, etc.

       PvmExists
	      There is already an entry matching the insert request.

       PvmHostFail
	      A	 foreign  host	in  the	 virtual  machine  failed  during  the
	      requested operation.

       PvmMismatch
	      A parameter does not match a corresponding one.

       PvmNoBuf
	      There is no current message buffer to pack or unpack.

       PvmNoData
	      The end of a message buffer was reached while trying  to	unpack
	      data.

       PvmNoEntry
	      The class server has no entry matching the lookup request.
	      [In Version 3.4: Relaced by PvmNotFound]

       PvmNoFile
	      The named executable does not exist.

       PvmNoGroup
	      The named group does not exist.

       PvmNoHost
	      There  is no host in the virtual machine with the given name, or
	      the name could not be resolved to an address.

       PvmNoInst
	      The named group has no member with this instance.

       PvmNoMem
	      Malloc failed to get memory for libpvm.

       PvmNoParent
	      This task has no parent task.

       PvmNoSuchBuf
	      There is no message buffer with the given buffer handle.

       PvmNoTask
	      No task exists with the given tid.

       PvmNotFound
	      No entry matching the lookup request was found.

       PvmNotImpl
	      This libpvm function or option is not implemented.

       PvmNotInGroup
	      The named group has no such member task.

       PvmNullGroup
	      A null group name was passed to a function.

       PvmOutOfRes
	      The requested operation could not be completed due  to  lack  of
	      resources.

       PvmOverflow
	      A value is too large to be packed or unpacked.

       PvmSysErr
	      Libpvm  could  not contact a pvmd on the local host, or the pvmd
	      failed during an operation.

FILES
       $PVM_ROOT/include/fpvm3.h
	      Fortran header file

       $PVM_ROOT/include/pvm3.h
	      C header file

       $PVM_ROOT/include/pvmsdpro.h
	      Header file for tasker, hoster and resource manager tasks

       $PVM_ROOT/include/pvmtev.h
	      Header file for tasks manipulating trace events

       $PVM_ROOT/lib/$PVM_ARCH/libpvm3.a
	      C (base) library

       $PVM_ROOT/lib/$PVM_ARCH/libfpvm3.a
	      Fortran wrapper library

       $PVM_ROOT/lib/$PVM_ARCH/libgpvm3.a
	      Group function library

SEE ALSO
       aimk(1PVM), pvm(1PVM), pvm_intro(1PVM), pvmd3(1PVM)

				 27 June, 1994			  LIBPVM(3PVM)
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