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Re: Pipeline Production Problems
Thanks to everyone for the help.
Well, the "service nfs restart" also did not work.
OK, my theory is that if one of you cannot instantly tell me what to do,
then I am trying to do something that I should not be trying to do.
I appreciate Crhis's comments on what should fail. Note that I have
everything set up so that one failure only knocks out one thing. Well, I
made the mistake of buying a couple of dual processor machines. This on
the theory that I could then have some machines with big memory to do
things that big memory can do. Not necessary for the pipeline, but nice
for the data reduction.
Since this has been a problem for a while now, my general thinking is to
quit trying to use the dual processor machines. Just add a couple more
single processor machines and run one process per machine. Then if one
hangs I can restart it. This is not so wasteful since I can then run the
dual processor machines with big memory doing data reduction looking for
variables.
Now a question on networks:
Suppose I have the following setup:
Computer A connects to switch 1 which also connects to Computer B
Computer C connects to switch 2 which also connects to Computer D
This should logically support full speed transmission between Computer A
and Computer B with also full speed transmission between compute C and
computer D. They are two completely isolated networks.
Now I add a cable between switch 1 and swi;tch 2.
What happens? Does the network slow down, or are the network boxes smart
enough to configure things for the highest possible transmission speed?
Suppose I have a more complicated network where it is possible to make a
bad routing choice. Is the system smart enough to figure out the best way
to route the data?
From the looks of things, the transmission speed goes down as I start each
transfer process going. I could add some extra cables so that the possible
routes had parallel cables if the system is smart enough to make use of
them.
Tom Droege
> [Original Message]
> From: Chris Albertson <chrisalbertson90278@yahoo.com>
> To: <tdroege2@earthlink.net>; Robert Creager
<creagrs@louisville.stortek.com>
> Cc: tass <tass@listserv.wwa.com>
> Date: 10/13/2003 2:48:26 PM
> Subject: Re: Pipeline Production Problems
>
>
> You'll notice where I said "the task is to find which script
> to run". But "xxx restart" or "xxx stop; xxx start" is still
> likely the way to go.
>
> How exactly are the Windoes files made available on the Linux
> Machines?
>
> One other "cheap workaround" might be to change your setup
> so the Linux files are __exported to__ the Windows boxes
> then the Windows machine writes data to what it sees as a
> "share" then at least when Windows hangs Linux can still access
> the files.
>
> Y are gettint to the pint where you might just want to set up one
> "file server" on a Linux machine to export a data directory
> using both NFT and SMB so all 2,000 or so of your computers can
> see al the files. People might argue that "putting all the eggs
> in one basket" is not the right way to go but using multiple
> file servers means multiple systems have to work. You know
> probability theory ... with multiple machine your _multiply_
> the chance of one breaking to compute the change of a system
> failure. Better to multiply by 1.0
>
> Also with only one file server you can better afford tricks like RAID
> and mirrord disks so you can continue working through a hardware
> failure. Yes, amazingly you _can_ pull the IDE data cable off a
> working system disk and not crash.
>
>
>
>
>
> --- Thomas Droege <tdroege2@earthlink.net> wrote:
> > Rob and all,
> >
> > The "service network restart" does it's thing. I then go back to
> > user
> > level and tried;
> >
> > cd /mnt/leejohn/newfol
> >
> > And it hung - indefinitely so far. 5 games of free cell
> >
> > Tom Droege
> >
> >
> > > [Original Message]
> > > From: Robert Creager <creagrs@louisville.stortek.com>
> > > To: <tdroege2@earthlink.net>
> > > Cc: tass <tass@listserv.wwa.com>
> > > Date: 10/13/2003 1:15:37 PM
> > > Subject: Re: Pipeline Production Problems
> > >
> > > During the interrogation, at Mon, 13 Oct 2003 13:00:46 -0500,
> > > "Thomas Droege" <tdroege2@earthlink.net> made the following
> > confession:
> > >
> > > > Is there a way to get communication with a Windows 98 computer
> > > > restarted without rebooting the linux machine?
> > >
> > > Try as root <service network restart> and see what happens.
> >
> >
> >
>
>
> =====
> Chris Albertson
> Home: 310-376-1029 chrisalbertson90278@yahoo.com
> Cell: 310-990-7550
> Office: 310-336-5189 Christopher.J.Albertson@aero.org
> KG6OMK
>
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