Can I set up PVM in such way that master doesn't start own tasks?

[Andrei]

We have a Perceus cluster (warewulf) consisting of 4-core master and a
number of 4-core nodes. I can start PVM on the master and then add all
nodes - it works fine. However, there are other guys who need this
master for their tasks, so I cannot overload it. I have tried to start
PVM on a node, but something goes wrong. First of all, PVM console
doesn't start correctly - it always freezes the first time I run pvm
command. Then I cannot add other nodes

libpvm [t40005]: pvm_addhosts(): Already in progress

But it is not true - I cleaned carefully /tmp/ and killed all pvm*
processes left from previous attempts.

So now I have the only way - to run from the master. Therefore I need
to set it in such way, that it will not run own tasks, but start tasks
on the nodes.

Can you help me with this?

[Ignatios Souvatzis]

On 2010-09-06, Andrei <andrei...@gmail.com> wrote:

> Can you help me with this?

The obvious way is:

a) use a master of a different PVM_ARCH, and request PVM_ARCH
b) request by explicit node name

You might be able to write a short wrapper to read all hosts (after
all, the pvm console can do that, too), remove the master from the
list, and round robin the others.

Regards,
-is