JTpack90 Design

• two extreme options for design:
  • bundle routines in modules functionally
    • difficult to add new storage formats
  • ``class'' modules for each sparse storage type
    • difficult to add new methods
• chose hybrid approach
  • module for each storage type containing:
    • type definition
    • routines to operate on that type
  • module for each method to define generic procedure for that method
    • contains routine for each storage type
• hybrid approach makes adding a new solver much easier, at the expense of slightly more effort to add a new storage type
  • to add new sparse storage type:
    • create new ``class'' module
    • add new specific routine in each solver module
  • to add new solver simply create new solver module