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Posted to issues@impala.apache.org by "Jim Apple (JIRA)" <ji...@apache.org> on 2017/11/07 05:19:00 UTC

[jira] [Created] (IMPALA-6166) Investigate requiring support for newer instruction sets

Jim Apple created IMPALA-6166:
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             Summary: Investigate requiring support for newer instruction sets
                 Key: IMPALA-6166
                 URL: https://issues.apache.org/jira/browse/IMPALA-6166
             Project: IMPALA
          Issue Type: Task
          Components: Perf Investigation
            Reporter: Jim Apple


There may be performance benefit to compiling with flags allowing the compiler to generate code for newer instruction sets like SSE4.1, AVX, CLMUL, and so on.

There will probably be code simplification, as well. See cpu-info.h.

We might consider doing this only at a new major version. It's also worth investigating (a) when the last chips without these features were shipped, and (b) if Xen, VirtualBox, and so on expose that true instruction sets available via /proc/cpuinfo - sometimes these are masked out



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