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Fix performance regression for generate_character_ngrams #16849

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Fix performance regression for generate_character_ngrams #16849

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Description

Fixes performance regression in nvtext::generate_character_ngrams introduced in #16212. Thread-per-row kernel is faster for smaller strings.

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  • I am familiar with the Contributing Guidelines.
  • New or existing tests cover these changes.
  • The documentation is up to date with these changes.

@davidwendt davidwendt added bug Something isn't working 2 - In Progress Currently a work in progress libcudf Affects libcudf (C++/CUDA) code. strings strings issues (C++ and Python) non-breaking Non-breaking change labels Sep 19, 2024
@davidwendt davidwendt self-assigned this Sep 19, 2024
@davidwendt davidwendt changed the base branch from branch-24.10 to branch-24.12 September 23, 2024 23:22
@davidwendt davidwendt added 3 - Ready for Review Ready for review by team and removed 2 - In Progress Currently a work in progress labels Sep 26, 2024
@davidwendt davidwendt marked this pull request as ready for review September 26, 2024 14:19
@davidwendt davidwendt requested a review from a team as a code owner September 26, 2024 14:19
vuule
vuule approved these changes Sep 30, 2024
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cpp/src/text/generate_ngrams.cu Outdated Show resolved Hide resolved
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@bdice bdice bdice approved these changes

@vuule vuule vuule approved these changes

@karthikeyann karthikeyann Awaiting requested review from karthikeyann karthikeyann is a code owner automatically assigned from rapidsai/cudf-cpp-codeowners

@kingcrimsontianyu kingcrimsontianyu Awaiting requested review from kingcrimsontianyu kingcrimsontianyu is a code owner automatically assigned from rapidsai/cudf-cpp-codeowners

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@davidwendt davidwendt

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3 - Ready for Review Ready for review by team bug Something isn't working libcudf Affects libcudf (C++/CUDA) code. non-breaking Non-breaking change strings strings issues (C++ and Python)
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4 participants
@davidwendt @bdice @vuule @galipremsagar