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From "Tim Armstrong (Code Review)" <ger...@cloudera.org>
Subject [Impala-CR](cdh5-trunk) Use AVX2 operations to speedup Bloom filter insert by 10-50%.
Date Wed, 08 Jun 2016 20:59:00 GMT
Tim Armstrong has posted comments on this change.

Change subject: Use AVX2 operations to speedup Bloom filter insert by 10-50%.
......................................................................


Patch Set 4:

It looks like it hit this on one of the builds:

11:45:59 /tmp/cc4RuPOa.s: Assembler messages:
11:45:59 /tmp/cc4RuPOa.s:19102: Error: no such instruction: `vpsrlvq -208(%rbp),%ymm0,%ymm0'
11:45:59 /tmp/cc4RuPOa.s:19115: Error: operand type mismatch for `vpand'
11:45:59 /tmp/cc4RuPOa.s:19128: Error: no such instruction: `vpsllvq -336(%rbp),%ymm0,%ymm0'
11:45:59 /tmp/cc4RuPOa.s:19148: Error: operand type mismatch for `vpor'

That's an avx2 instruction, so I guess on some systems it's trying to use some assembler that
doesn't support AVX2?

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Gerrit-MessageType: comment
Gerrit-Change-Id: I6fef4f6652876f8fd7e3f0e41431702380418c98
Gerrit-PatchSet: 4
Gerrit-Project: Impala
Gerrit-Branch: cdh5-trunk
Gerrit-Owner: Jim Apple <jbapple@cloudera.com>
Gerrit-Reviewer: Jim Apple <jbapple@cloudera.com>
Gerrit-Reviewer: Tim Armstrong <tarmstrong@cloudera.com>
Gerrit-HasComments: No

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