Re: [BProc] process migration howto

[<er...@he...>]

On Mon, Mar 29, 2004 at 08:01:54PM +0100, Gerben Roest wrote:
> Hi all,
> 
> I want to know how to test BProc's funtionality. I have a 
> cpu-time-consuming little c program, which I want to run on the master and 
> hopefully see it running on the slave (I have a 2-node cluster for this to 
> test).
> 
> On the master the daemons bpmaster and bpslave both run (the master can 
> join if he likes) and on another node only bpslave runs.
> Doing a "bpstat" I get:
> 
> Node(s)                        Status       Mode       User       Group
> 0-1                            up           ---x--x--x root       root
> 
> but when I run the program twice, they both run on the master, when I look 
> at it with "beotop". I mean, one should run on the master and one on the 
> slave, right?
> Or do I have to run one on the master and run the other on the slave, by 
> hand? That's not so fancy.. I can do that with normal rsh or ssh as well. 

Stuff doesn't automatically move to different nodes on a BProc system.
You need to place the processes on nodes manually.  bpsh is usually an
easy way to do this.  After that a process can move itself using the
BProc API.  (bproc_move(), etc.)

- Erik