GETINST(3PVM)

NAME
pvm_getinst - Returns the instance number in a group of a PVM process.

SYNOPSIS
C    int inum = pvm_getinst( char *group, int tid )
Fortran    call pvmfgetinst( group, tid, inum )

PARAMETERS

group
    Character string group name of an existing group.

tid Integer task identifier of a PVM process.

inum
    Integer instance number returned by the routine. Instance numbers start at 0 and count up. Values less than zero indicate an error.

DISCUSSION
The routine pvm_getinst takes a group name group and a PVM task identifier tid and returns the unique instance number that corresponds to the input. It can be called by any task whether in the group or not. If pvm_getinst is successful, inum will be >= 0. If some error occurs then inum will be < 0.

EXAMPLES
C:
	inum = pvm_getinst( "worker", pvm_mytid() );
	--------
	inum = pvm_getinst( "worker", tid[i] );

Fortran:
	CALL PVMFGETINST( 'GROUP3', TID, INUM )

ERRORS
These error conditions can be returned by pvm_getinst
	PvmSysErr	pvmd was not started or has crashed.
	PvmBadParam	giving an invalid tid value.
	PvmNoGroup	giving a non-existent group name.
	PvmNotInGroup	specifying a group in which the tid is not a member.

SEE ALSO
joingroup(3PVM), gettid(3PVM)