[daip] moving data to different machines ....

Eric Greisen egreisen at nrao.edu
Wed Jul 18 10:49:10 EDT 2007


Victor Migenes writes:
 > 
 > Hi Paul, 
 > 
 > I hope you can help me with a quick question..... 
 > 
 > I loaded some VLBA data on my machine (FITLD).  Everyhting looks OK! 
 > I then ftp'ed the data from my machine to another (UNIX to LINUX) that 
 > will use the same AIPS number.  When I try to start AIPS from the 2nd 
 > machine it does not see the data on the disk!! I tried deleting the 
 > CAD000000 file on the disk to see if AIPS would generate a new one but 
 > that didn't help.  I tried using the AIPS task MOVE and that did not work 
 > either.  Is there a way that I can make AIPS see that data without loading 
 > it again from DAT? I believe there was a way but I dont recall .....
 > 
 > 
By UNIX I take it you mean Solaris on a SUN computer and by Linux you
mean on a desktop with an Intel cpu?

In that case, the 2 machines have opposite byte order and the data
cannot be interchanged.  You could write out the data on the Solaris
machine as a FITS disk file and then read it back in to the LInux
machine.  This takes care of the byte order issues.

Note that it is dagerous to let these machines talk to each other in
aips.  At the AOC we have two "sites" - NRAOAOC for Solaris and older
Macs and COAOARN for Intel-based Linux and Mac computers.  The two
sites do not then know about each other so MOVE etc cannot be used
bewteen them.

Eric Greisen




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