[PARQUET-1786] [C++] Use simd to improve BYTE_STREAM_SPLIT decoding performance

• Type: Improvement
• Status: Resolved
• Priority: Minor
• Resolution: Fixed
• Fix Version/s: cpp-4.0.0
• Component/s: parquet-cpp
• Labels: pull-request-available
• Assignee: Martin Radev
• Reporter: Martin Radev
• Created: 05/Feb/20 21:51
• Updated: 23/Jun/24 03:31
• Resolved: 24/Mar/20 18:18

Description

BYTE_STREAM_SPLIT essentially does a scatter/gather operation in the encode/decoder paths. Unfortunately, it is not as fast as memcpy when the data is cached. That can be improved through using simd intrinsics.

Issue Links

• links to: GitHub Pull Request #6679