[SYSTEMDS-2154] Misleading explain recompile_hop output

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Fix Version/s: SystemML 1.1
• Assignee: Matthias Boehm
• Reporter: Matthias Boehm
• Created: 19/Feb/18 21:35
• Updated: 24/Feb/18 09:37
• Resolved: 24/Feb/18 09:37

Description

Since the major refactoring of the existing recompiler in SYSTEMML-2072 (common code path), the explain recompile_hops flag returns misleading output. Specifically, during recompilation, the recompiler creates and updates a deep copy of the HOP DAG but the explain output shows the old (not updated) DAG.