[daip] aips 31DEC07 compiler question

[Joe Cammisa]

eric, once again, thanks very much for your (speedy) assistance!!

while i have your attention, i might as well ask you about migrating data
from the old server to the new one; specifically, since both systems are
linux, is it enough to simply use unix to copy the contents of an aips
data area on the old system to a corresponding aips data on the new one? 
would i  not also need to build/rebuild the catalogs on the new system as
well?  am i overlooking anything with this line of thinking?

again, thanks in advance for your help.  best-

joe

> Joe Cammisa writes:
>  >
>  > greetings, eric.  our astronomy department has just purchased a new
> dell
>  > server and hope to soon begin processing their data on it.
> unfortunately,
>  > as i set out to install the 31DEC07 version of aips, i am reminded that
>  > the compiler version used by the install wizard does indeed matter.
> the
>  > version on this system is gcc-4.1, which is not mentioned on the
>  > aips-compiler web page, which gives me pause; worse, when i attempt to
>  > assuage my paranoia by grabbing the nrao version of gcc-2.95.3, i am
> thus
>  > far unable to successfully build it; nor (as of this writing) have i
> been
>  > able to build gcc-3.4.4 on this x86_64 rhel system.
>  >
>  > therefore, i'm afraid i must ask your advice on this matter:  has aips
>  > been successfully compiled on gcc-4.1?  are there other preferable gcc
>  > versions that i should be trying to bootstrap?  any pertinent
>  > recommendation or information on this matter would be most heartily
>  > appreciated.  i sincerely thank you in advance for your time.  best-
>  >
>
> My general recommendation is to do the binary installation unless you
> develop your own source code inside the AIPS package.  The binary
> codes are produced by the Intel compiler and run faster on essentially
> all machines.  This can be 40% or better improvement in performance
> over the GNU compiler for threaded PIVs and even 7% for AMD machines
> over that produced by the GNU compilers for these machines.  I now use
> 3.4.x (x >= 3) with good result in the gnu suite but the binaries will
> be better for performance.  The binary installation is very simple
>
>         perl install.pl -n
>
> where the -n says do binary (network).  If you have started your
> installation, you may need to edit the ~/.AIPSRC file to switch to
> binary but it is really simple to use.
>
> Even if you do develop some code locally, I would recommend having a
> public area built with the binary installation and a separate
> GNU-compiled version for the development.
>
> Eric Greisen
>


-- 

  Joe Cammisa
  Networking & Systems
  College Information Resources
  Haverford College

  phone:  1-610-896-4239
  email:  jcammisa at haverford.edu