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[McIDAS #USE-707629]: XCD question

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  • Subject: [McIDAS #USE-707629]: XCD question
  • Date: Mon, 03 Dec 2007 21:05:56 -0700
Hi Bryan,

re:
> We will likely be asking the MUG folks, but I thought you may have a
> quick insight.
> 
> Question...do you know if there is anything about XCD that would make it
> difficult (or impossible) to run over NFS?(...i.e, the executables are
> local, but the data is being written to a file system that is not local)

No, it should run, but it may cause problems for any systems accessing
the same file system that is NFS mounted to the machine running XCD.
We ran into a problem akin to this here at Unidata, and that was only 
for the non-data files that were being updated (e.g., DCLSTIDX.PTR, 
*.ERR, *.IDM, etc.).

> I'm being told by some of our folks here that our attempt to do this
> between 2 Linux boxes running RHEL 4 was not successful.

I would be very surprised that it did not work at all; I would not
be surprised if the comment was that it did not work well.

> I am guessing
> it could be a file lock or write permission problem, but really don't
> know.

I doubt if it is a file locking problem since I don't think that McIDAS
does any real (OS-level) file locking.

> I would think if the file is resolvable by DMAP, XCD shouldn't
> have a problem writing to it.

I agree, but, again, the performance might not be what is desired.

> Thanks,

No worries.

Cheers,

Tom
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Ticket Details
===================
Ticket ID: USE-707629
Department: Support McIDAS
Priority: Normal
Status: Closed