IPP Software Navigation Tools IPP Links Communication Pan-STARRS Links

Changes between Version 1 and Version 2 of DVO_LargeFiles


Ignore:
Timestamp:
Jul 16, 2010, 9:39:12 AM (16 years ago)
Author:
bills
Comment:

--

Legend:

Unmodified
Added
Removed
Modified
  • DVO_LargeFiles

    v1 v2  
    11== DVO and Large Database Files ==
    22
    3 2010.03.21 : I have upgraded the Ohana software to handle large (>2^32 byte) files.  This mostly involved changing the fits I/O structures to use fseeko(), ftello(), and off_t types to define the sizes of files.  I extended the table and image structures to use off_t as well for NAXIS1,2, in the fear that someone will want to define a 2G vector or image.
     32010.03.21 : I have upgraded the Ohana software to handle large (>2^32^ byte) files.  This mostly involved changing the fits I/O structures to use fseeko(), ftello(), and off_t types to define the sizes of files.  I extended the table and image structures to use off_t as well for NAXIS1,2, in the fear that someone will want to define a 2G vector or image.
    44
    55* As part of the large-file testing, I have generated a very large DVO database catalog with 21M measurements of 141k stars (3.2GB).  One interesting data point: to run addstar -resort on that file took 85 seconds, of which 37 were used for the actual resort process and the rest was I/O time (on ipp022).