Re: [CI] Clusterwide pids are here (optionally, if you want them)

[Bruce W. <br...@ka...>]

> 
> What do they look like?  Are they a wide integer, or a structure,
> or what?

The initial cut is simple:
  a. you can optionally configure them on
  b. you set your node number in lilo
  c. MAXPID is changed to be the full 31 bits
  d. low order 16 bits are uniquifier
  e. high order 15 bits are node number
  f. no new apis  (pids really are 32 bits in Linux)
  g. no known problems with utilities or apps
	or any such

Where could we go from here:
  a. make the config stuff more flexible and let you
	specify how many bits for node number and how
	many for uniquifier (then you could fit in 16
	bits if you really wanted to)
  b. make the whole cluster configuration more 
	filesystem or GUI or whatever.

I have no plans to do either of these but would welcome
others who want to.

bruce
> 
> 
> 
> 
> br...@ka... wrote:
> > 
> > There is a new release of Cluster Infrastructure.   Besides moving
> > up to 2.4.6 kernel and including
> > the patches to allow it run on Alpha, it has support for
> > clusterwide pids (we brought it over from the SSI project
> > since there seemed to be interest).  In doing the configuration
> > of the kernel, the CPID capability is optional.
> > 
> > So far the configuration capability is pretty simple.  If you have
> > a hankering to tinker, feel free.
> > 
> > bruce walker
> > 
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> 
> -- 
>                                            David Nicol 816.235.1187
>                             "Your plastic pal who's fun to be with"
>