- Both packages represent robust, portable, extensible linear algebra toolkits.
- JTPACK77 essentially in maintenance mode.
- may add Fortran 77 interface to JTPACK90 to help current JTPACK77 users transition
- JTPACK90 is more modern, more easily extensible.
- JTPACK90 has parallel support (JTPACK77 never will).
- Neither package has an abundance of methods or preconditioners.
- Focus has been on what was needed, and a general, extensible infrastructure.
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