[SYSTEMDS-1841] Performance issue codegen outer over ultra-sparse matrices

• 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: 15/Aug/17 23:53
• Updated: 09/Sep/17 03:50
• Resolved: 16/Aug/17 18:04

Description

Experiments with codegen outer operations over the Amazon Books review dataset (8,026,324 x 2,330,066, nnz=22,507,155, i.e., sparsity=10^(-6)) showed unnecessary overhead for this ultra-sparse data set. This task aims to remove this overhead.