[daip] 2 GB limit on Linux

[Eric Greisen]

Joseph Lazio writes:

 > I think I encountered this problem recently.  However, there's
 > something I don't quite understand.  We were loading data onto a
 > machine (potemkin) running 31DEC01 under the 2.4.2 kernel.  We were
 > loading remotely from a machine (lexington) also running 31DEC01 under
 > the 2.2.18 kernel.
 > 
 > I thought that under the 2.4.x kernel, the 2 GB limit had been
 > lifted.  Would the TPMONs on lexington (2.2.18) still have caused a
 > problem?  Also, can you remind me where the 2 GB problem is
 > documented?  (I looked in AIPS newsletters, memos, and online.)
 > 

AIPS has compiled correctly for the 2 Gbyte options in Linux for some
time - we changed CCOPTS.SH on April 9, 2001 so that all systems would
compile for it rather than just us.  If your system was build before
that date then it will have to be rebuild - compile all C routines in
$APLGEN and below and run INSTEP4.  I do not think that we forced
this.

On June 12 I changed the FITS disk routines to be C as well so that
they would participate in the new order of files > 2 Gbyte.

However, since TPMON is running on an old system it cannot read a file
gretaer than 2 Gbytes - but no such file can exist on it either.

Eric Greisen