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_initsend, pvm_mcast, pvm_mkbuf, pvm_nrecv, pvm_pack, pvm_precv, pvm_probe, pvm_psend, pvm_recv, pvm_recvf, pvm_send, pvm_sendsig, 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 following 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.

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.

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

PvmMismatch
    The count parameter does not match the count used in peer tasks.

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.

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.

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)