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CONFIG

CONFIG

Section: PVM Version 3.4 (3PVM) Updated: 31 August, 1994
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NAME

pvm_config - Returns information about the present virtual machine configuration.

 

SYNOPSIS

C       int info = pvm_config( int *nhost, int *narch, struct pvmhostinfo **hostp )

struct pvmhostinfo {
int hi_tid;
char *hi_name;
char *hi_arch;
int hi_speed;
};
Fortran call pvmfconfig( nhost, narch, dtid, name, arch, speed, info )

 

PARAMETERS

nhost
Integer returning the number of hosts (pvmds) in the virtual machine.
narch
Integer returning the number of different data formats being used.
hostp
Returns pointer to an array of structures which contain information about each host including its pvmd task ID, name, architecture, and relative speed.
dtid
Integer returning pvmd task ID for host
name
Character string returning name of host
arch
Character string returning architecture name of host
speed
Integer returning relative speed of host. Default value is 1000.
info
Integer status code returned by the routine. Values less than zero indicate an error.

 

DESCRIPTION

The routine pvm_config returns information about the present virtual machine. The information returned is similar to that available from the console command conf.

The C function returns information about the entire virtual machine in one call. The Fortran function returns information about one host per call and cycles through all the hosts. Thus, if pvmfconfig is called nhost times, the entire virtual machine will be represented.

Note that in C the hostp array is allocated and owned by libpvm. It is automatically freed or reused on the next call to pvm_config.

Note that in Fortran the reported value of nhost and the host configuration do not change until the function resets at the end of a complete cycle. The user can reset pvmfconfig() at any time by calling it with nhost = -1.

If pvm_config is successful, info will be 0. If some error occurs then info will be < 0.

 

EXAMPLES

C:
        struct pvmhostinfo *hostp;
        int i, nhost, narch;

        info = pvm_config( &nhost, &narch, &hostp );
        for (i = 0; i < nhost; i++)
                printf("%s\n", hostp[i].hi_name);

Fortran:
        Do i=1, NHOST
          CALL PVMFCONFIG( NHOST,NARCH,DTID(i),HOST(i),ARCH(i),SPEED(i),INFO )
        Enddo

 

ERRORS

The following error condition can be returned by pvm_config
PvmSysErr
pvmd not responding.

 

SEE ALSO

pvm_tasks(3PVM)


 

Index

NAME
SYNOPSIS
PARAMETERS
DESCRIPTION
EXAMPLES
ERRORS
SEE ALSO

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Time: 21:53:18 GMT, April 16, 2011