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[WIP]: Tweak Int64Index.reindex() performance #984
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kozlov-alexey
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IntelPython:master
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kozlov-alexey:feature/speedup_int64_index_reindex
Open
[WIP]: Tweak Int64Index.reindex() performance #984
kozlov-alexey
wants to merge
2
commits into
IntelPython:master
from
kozlov-alexey:feature/speedup_int64_index_reindex
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pep8speaks
commented
Aug 17, 2021
Hello @kozlov-alexey! Thanks for opening this PR. We checked the lines you've touched for PEP 8 issues, and found:
- In the file
sdc/extensions/sdc_hashmap_ext.py:
Line 69:1: E266 too many leading '#' for block comment
Line 71:1: E302 expected 2 blank lines, found 0
Line 76:1: E305 expected 2 blank lines after class or function definition, found 1
Line 1175:59: E231 missing whitespace after ','
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Motivation: current implementation of Int64Index reindex via building map_positions as a typed.Dict and filling the result indexer in a prange scales poorly and has performance that is far from ideal. This PR improves performance by ~2x by using native TBB based implementation.