Wes McKinney created PARQUET-517:
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Summary: Ensuring aligned memory on encode / decode hot paths for
SSE optimizations
Key: PARQUET-517
URL: https://issues.apache.org/jira/browse/PARQUET-517
Project: Parquet
Issue Type: Improvement
Components: parquet-cpp
Reporter: Wes McKinney
We are using {{std::vector}} in many places for memory allocation; if we want
to use SSE on this memory we may run into some problems.
Couple things we should do
* Add an STL allocator for {{std::vector}} that ensure 16-byte aligned memory
* Check user-provided memory for alignment before utilizing an SSE-accelerated
routine (e.g. SSE hash functions for dictionary encoding) and decide whether to
copy and use SSE or no-copy and use no-SSE code.
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