rapidsai/cudf

[FEA] `cudf.read_text` does not use the GDS-enabled datasource

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#13.880 aberto em 14 de ago. de 2023

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PerformancePythoncuIOfeature requestgood first issuelibcudf

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Description

libcudf's multibyte_split has multiple ways to specify input data source when reading from a file:

  1. auto const source = cudf::io::text::make_source_from_file(temp_file_name); // no GDS

  2. auto const datasource = cudf::io::datasource::create(temp_file_name); auto const source = cudf::io::text::make_source(*datasource); // supports GDS

cudf.read_text uses the first option to create the data_chunk_source object, so it does not benefit from potential direct reads with GDS.

cudf.read_text should create a cudf::io::datasource object to improve performance on GDS-enabled systems.

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