[daip] IMAGR errors on Linux box

[James Robnett]

    Good memory ... almost *exactly* 7 years ago....

http://listmgr.cv.nrao.edu/pipermail/bananas/2000-June/000008.html

     It's possible it's a kernel problem.   We haven't
done any tests with 2.6.19 kernels ..  Did the problem
start after some recent upgrade ?  Your message
seems to imply that it 'recently' started doing this.

If you haven't upgrade the kernel or OS components
in that time then certainly hardware is a possibility.

james
ps: The original Redhat errata referenced in the
above link seems to be lost to the world.

On May 1, 2007, at 3:06 PM, Eric Greisen wrote:

> This reminds me of a page fault bug that we had in RedHat about 7
> years ago.  The program would go on computing before the new page was
> rolled all the way in.  RedHat congratulated themselves that they
> found the problem before anyone had encountered it - but we were at
> the time studying issues with IMAGR and FRING.  AIPS beats on
> computers hard enough that timing problems in disk I/O and in paging
> will be exposed.  Are any of the disks mounted over NFS?
>
> I will forward this to a few other folks who may remember other
> problems or know of Fedora issues.  Note that the error I am
> remembering was a software issue in the o/S rather than a pure
> hardware issue.
>
> Good luck,
>
> Eric Greisen