[SYSTEMDS-1885] Slow codegen sparse-safe aggregates over compressed data

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Fix Version/s: SystemML 0.15
• Epic Link: Code generation for operator fusion
• Assignee: Matthias Boehm
• Reporter: Matthias Boehm
• Created: 04/Sep/17 06:34
• Updated: 08/Sep/17 19:31
• Resolved: 08/Sep/17 19:31

Description

The codegen cell template does not yet exploit the ability to perform sparse-safe unary operations purely over the value tuples of compressed matrices, which leads to significant slowdowns of orders of magnitude.