large image handling error

Guest wrote on Nov 01, 2006

Dear IRAF Folks,

I have a user here who is running IRAF on a Linux machine--with
plenty of RAM--and he gets a repeatable error when trying to combine
several large files into an image mosaic:

PANIC in `/iraf/iraf/bin.suse/x_images.e': Memory has been corrupted

Does this ring any bells, or can you advise me on how to investigate
the problem further?

Thanks Much,
Bill Boyd
System Administrator
UC Berkeley Astronomy Department

Post generated using Mail2Forum (http://www.mail2forum.com)

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Eugene Romas wrote on Nov 01, 2006

Oh, man! I'm a sysadmin too... But working with PPC-systems(Pay-Per-Click).
But i seen this error while my IRAF(2.13b) has been wrong installed and i used wrong architecture of binaries!
I have Gentoo 2006.1(x86) on my home-PC, but i used pre-compiled IRAF for RedHat! After re-installing to "linux" ARCH i don't seen this error nomore!

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Mike Fitzpatrick wrote on Nov 01, 2006

I fyou get a 'memory corrupted' error from any task (e.g. "help implot") and you're using a recent 2.6 linux kernel then you're probably seeing the 'stacksize problem' mentioned in other posts (do a Forum search on 'stacksize' from the banner bar). Otherwise, I assume you're using IMCOMBINE for this? This could be a bug in the task of some kind but we'll need more information (parameters, size of the images, IRAF and SuSE version, etc). Note that there is still a 32-bit limit in IRAF so if the final mosaic is larger than 2GB this could also be a cause.

-Mike

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bboyd wrote on Nov 01, 2006

Thanks Mike,

This turned out to be the stacksize problem. Apologies for not looking at iraf.net first--I was still operating under the old NOAO paradigm and I sent mail to iraf@noao.

Bill

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Last post on Nov 01, 2006