[daip] Re: aips DA=jansky

[Patrick P Murphy]

On Thu, 21 Aug 2003 09:29:42 -0500 (CDT), <zadeh at northwestern.edu> said:

> Dear Pat, 
> Hope all is well. We have been having quite a bit of trouble mounting
> the disks from a sun system from a linux system and vice versa using
> aips [aips DA=jansky (linux) from purcell (sun)].

If this is anything other than a X86 machine from sun (in other words,
if it's a regular Sparc or Ultra or Sun Fire server or similar), you
can't do this.  The byte order is big-endian on suns (except the X86
"sun pc") and little endian on X86/Linux machines.  Because AIPS
structures on disk are in effect mapped to Fortran common blocks, byte
order matters.

The only way I know of to get Classic AIPS data from the Sun to the
Linux machine or vice versa is through FITTP, FITAB, and FITLD.

> Dan has been helping me and had in fact asked Doug Roberts for some
> advice initially.  He will send you a message and let you know what
> the problem is. He is fairly knowledgeable and has in fact installed
> aips several times on both the Sun and Linux systems including the
> patches from Bill Cotton's standalone aips tasks. I appreciate your
> help in responding to his inquiries. Many thanks in advance.

> Cheers, 
> Farhad

> ------------------------------------------------------
> F. Y.  Zadeh
> Northwestern University            Tech Institute
> Dept. Physics and Astronomy        Room F115
> 2145 Sheridan Road                 (847) 491-8147 (office)
> Evanston, Il. 60208-3112           (847) 491-9982 (Fax)
> http://www.physics.nwu.edu/staff/faculty.html

Hope this helps.
				- Pat
-- 
   Patrick P. Murphy, Ph.D.              Division Head, CV Computing, NRAO
   Home: http://goof.com/~pmurphy/       Work: http://www.nrao.edu/~pmurphy/
"Laws of nature are...just parochial by-laws in our cosmic patch" - Martin Rees