The PVM menu
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The PVM menu (pictured in Fig. 5.3) consists of ten
entries. The major operations available to the user from this menu include
configuring and executing PVM and XPVM and executing the NIST CAML utilities
pvmstat, and pvmtidy. Each entry is described
in turn below.
- PVM console - This menu-entry enables the user to launch the
PVM console program in an xterm window. The user can select a
PVM hostfile (using the Pick Hostfile menu-entry described below).
The PVM hostfile contains a list of the hosts comprising the user's
virtual machine. If no hostfile is currently selected, then selection
of the PVM console menu-entry causes a dialog box to appear.
This dialog box consists of a message box starting with the words
No hostfile has been set on the top and a row of four buttons
on the bottom. These buttons are
- Edit Hostfile - This button enables the user to edit a
hostfile. The user can then select the hostfile with the
Set Hostfile and Start button. This is convenient if the user
wishes to create a new PVM hostfile or change an already existing
one. Selecting the Edit Hostfile button invokes the PADE Edit
File window which consists of a text-entry box preceded by the words
Enter file name: and having three buttons across the bottom.
These buttons are as follows.
- File Browser - Invokes the File Browser window for
hostfile selection.
- Edit - Invokes an instance of the user's editor
launched in an xterm window. If an editor has already
been selected, this button will be labeled with the name of
the selected editor. If no editor has previously been selected,
an extra text-entry box is appended to the top of the PADE Edit
File window in which the user can specify the editor.
- Cancel - Selection of this button cancels the user's
request to start the PVM console.
- Set Hostfile and Start - Invokes the File Browser window so
that the user can select the PVM hostfile. Once selected, PADE
immediately starts the PVM console with the selected hostfile. If
the file selected with the browser is invalid, the PVM console will
start PVM only on the development host.
- Start Without Hostfile - This button launches the PVM console
without a hostfile. The virtual machine will consist only of the
development host in this case.
- Cancel - Cancels the user's request to start the PVM console.
- PVM daemon - Runs the PVM daemon. If no hostfile has been
previously selected, then the same dialog box appears as described above
when the PVM console button was selected.
- xpvm - This button launches the XPVM application. Note carefully
that, if XPVM is launched, it will start up a virtual machine unless one
already exists. PADE will look for a .xpvm_hosts file in the
user's home directory (indicated by the HOME environment variable).
If it does not find this file, a PADE Question box will appear. This
dialog box consists of a message box at the top containing a message
beginning with the words No
~
/.xpvm_hosts file exists. The
bottom of the box contains three buttons. These buttons are
- Edit
~
/.xpvm_hosts - Selecting this button enables the user
edit or create a xpvm_hosts similar to the Edit Hostfile
button in the dialog box associated with the PVM console
menu-entry.
- Start Without
~
/.xpvm_hosts - Selecting this button launches
the XPVM application without an .xpvm_hosts file.
- Cancel - Selecting this button cancels the user's request to
launch XPVM.
If xpvm is not in the user's search path (which would be the
case if the program is not installed) then this menu entry is
disabled.
- pvmstat - This menu-entry invokes the NIST CAML utility
pvmstat. This program returns the status of the virtual machine.
If PADE does not find this program in the user's PATH, the
menu-entry is disabled.
- pvmtidy - This menu-entry invokes the NIST CAML utility
pvmtidy. This program remove all spurious pvmd.* files from
the nodes of the user's virtual machine in case PVM does not shut down
gracefully. If PADE does not find this program in the user's
PATH, the menu-entry is disabled.
- Pick Hostfile - This menu-entry enables the user to select the
PVM hostfile that will be used when the PVM daemon or console is started.
Selection of this button causes the PADE file browser window to appear.
If the user hits the Cancel button in the browser, the browser
exits and PADE assumes that no hostfile has been selected.
- Edit Hostfile - This menu-entry is used to edit the PVM hostfile
selected. If no hostfile has been selected, the PADE Edit File window
appears. In this release, the Edit File window appears even if a
hostfile has been selected.
- List Hostfile - This menu-entry is used to display the selected
PVM hostfile in a List Output window. If no hostfile has been previously
selected, the menu-entry is disabled.
- Write Host List to Hostfile - This menu-entry gives the user the
option of performing the setup operations for the application currently
under development in advance of starting the virtual machine. At the
end of the setup procedure (after the Setup window is closed),
the user can create a PVM hostfile that is appropriate to the setup
information. If no setup has been performed, this menu-entry is
disabled.
Figure 5.4: The MONITOR main menu
Next: The Monitor menu
Up: The Main Window
Previous: The Run menu
Fri Mar 31 20:30:34 EST 1995