[SYSTEMDS-2294] Constrained parfor optimizer input overwritten with defaults

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Fix Version/s: SystemML 1.2
• Assignee: Matthias Boehm
• Reporter: Matthias Boehm
• Created: 02/May/18 00:17
• Updated: 22/May/18 18:03
• Resolved: 22/May/18 18:03

Description

The parfor construct supports various optimizers, including a CONSTRAINED optimizer that that optimized around user-provided defaults. To do so it makes sure that these parameters are propagated down to the runtime, and marking all other paramters as unspecified, whereas for other optimizers (incl NONE) unspecified parameters are replaced with defaults.

All parameters are supposed to be case-insensitive. However, if constrained instead of CONSTRAINED is used the unspecified parameters are replaced with default which look from the perspective of the constrained optimizer as user-provided input that cannot be changed.