Release 9.0-003 (August 2006) includes some bug fixes and a couple of enhancements over and above the features in
Release 9.0 (April 2005).
The enhancements in Release 9.0-003 are described below.
Header Arrays containing real numbers can be written in sparse form. When arrays are very sparse (that is, contain a high percentage of zero
values), this can reduce the size of the Header Array file considerably.
As indicated in section 5.2.1 of GPD-5, compressions (that is, garbage collection) are not done by default. We have found that, for some
models, this leads to unnecessarily large values of MMNZ etc. In some cases, the required values exceed the amount of memory available.
Accordingly, if compressions are not turned on via the Command file, we have decided to let the programs turn on compressions in certain
circumstances to try to avoid this problem of unnecessarily large MMNZ values.
Complete details about Release 9.0-003 are documented in REL9003.PDF which you can download.