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Re: lost data? [message #24975]

Thu, 10 May 2001 09:15

George N. White III is currently offline

George N. White III
Messages: 56
Registered: September 2000

Member

On Thu, 10 May 2001, Jaco van Gorkom wrote:

>
> George N. White III wrote in message ...
> ...
>> Some OS's (SGI Irix) have a checkpoint facility that works at the level of
>> processes, and doesn't require support built in to the application. I
>> know there has been some work on checkpointing for linux, as the same
>> capability is required to migrate a process to a new node in some
>> distributed processing systems. I don't know if there is anything you can
>> use with IDL, but it is certainly worth a look.
> ...
>
> One question here, just for my understanding:
> what kind of thing is checkpointing?
>
> Jaco

Checkpointing saves an "image" of a running program in such a way
that you can restart the program at that point in the event of a
crash. For Linux, see:

http://www.cs.rutgers.edu/~edpin/epckpt/

You can write applications that save their state, but if you have
OS-level support you can checkpoint applications. Checkpointing
does impose some constraints on the application, and you may need
lots of disk space to hold the checkpoint files.

--
George N. White III <gnw3@acm.org> Bedford Institute of Oceanography

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[Message index]

		Re: lost data? By: George N. White III on Thu, 10 May 2001 09:15
		Re: lost data? By: Liam E. Gumley on Thu, 10 May 2001 07:55
		Re: lost data? By: Jaco van Gorkom on Thu, 10 May 2001 07:52
		Re: lost data? By: Paul van Delst on Thu, 10 May 2001 06:12
		Re: lost data? By: George N. White III on Thu, 10 May 2001 06:24
		Re: lost data? By: nmw on Mon, 14 May 2001 02:19

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