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Posted to github@arrow.apache.org by "cyb70289 (via GitHub)" <gi...@apache.org> on 2023/02/22 02:43:16 UTC

[GitHub] [arrow] cyb70289 commented on issue #34268: [Python] Pyarrow throw illegal instruction immediately on import on some hardware platforms.

cyb70289 commented on issue #34268:
URL: https://github.com/apache/arrow/issues/34268#issuecomment-1439359645

   The runtime detection and environment variables are to choose **explicit** SIMD optimization code, as this [example](https://github.com/apache/arrow/blob/main/cpp/src/arrow/compute/exec/bloom_filter_avx2.cc).
   
   Arrow is built with compiler (gcc, clang) option `-msse4.2` on x86 by default. With this option on, compiler may generate SSE code for any `cpp` source file, not only the explicit SIMD code.
   
   Looks we should improve the document to explain this "illegal instruction" issue. I did saw it some times.
   
   cc @pitrou 


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