---
name: "pvm_gsize"
section: "3"
platform: "linux"
package: "pvm-dev"
version: "3.4.2-8"
release: "Debian 3.0 (Woody)"
platforms: ["linux"]
url: "https://new.carta.tech/pvm_gsize"
---

# pvm\_gsize(3)

Returns the number of members presently in the named group.

## NAME

pvm\_gsize - Returns the number of members presently in the named group.

## SYNOPSIS

```
C	int size = pvm_gsize( char *group )
Fortran	call pvmfgsize( group, size )
```

## PARAMETERS

- group

  **Character string group name of an existing group.**\

- size

  **Integer returning the number of members presently in the group.** **Values less than zero indicate an error.**

## DESCRIPTION

**The routine** *pvm\_gsize* **returns the size of** **the group named** *group.* **If there is an error** *size* **will be negative.**

**Since groups can change dynamically in PVM 3.0,** **this routine can only guarantee to return the instantaneous** **size of a given group.**

## EXAMPLES

```
C:
	size = pvm_gsize( "worker" );

Fortran:
	CALL PVMFGSIZE( 'group2', SIZE )
```

## ERRORS

**These error conditions can be returned by** *pvm\_gsize*

- PvmSysErr

  **pvmd was not started or has crashed.**

- PvmBadParam

  **giving an invalid group name.**

## SEE ALSO

**pvm\_joingroup(3PVM)**