[SYSTEMDS-1009] Avoid spark context creation on parfor optimization

• Type: Improvement
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Fix Version/s: SystemML 0.11
• Assignee: Matthias Boehm
• Reporter: Matthias Boehm
• Created: 04/Oct/16 04:01
• Updated: 05/Oct/16 02:00
• Resolved: 05/Oct/16 00:40

Description

Currently, every parfor script triggers the lazy spark context creation, independent of its input data size and script in order to obtain memory budgets and parallelism. On small data the the spark context creation dominates end-to-end execution time. We should improve this to a configuration-only analysis, which would avoid the context creation.

For example, here are the XS and S performance results for univariate statistics:

UnivariateStatistics on mbperftest/bivar/A_10k/data: 14
UnivariateStatistics on mbperftest/bivar/A_10k/data: 14
UnivariateStatistics on mbperftest/bivar/A_10k/data: 17
UnivariateStatistics on mbperftest/bivar/A_10k/data: 16

UnivariateStatistics on mbperftest/bivar/A_100k/data: 14
UnivariateStatistics on mbperftest/bivar/A_100k/data: 15
UnivariateStatistics on mbperftest/bivar/A_100k/data: 14
UnivariateStatistics on mbperftest/bivar/A_100k/data: 17

Issue Links

• Is contained by: SYSTEMDS-1010 Perftest 0.11 release and related improvements