[DATA] Implement zero-copied string dtype and accelerate shuffle. - #149
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Test Results 48 files ±0 48 suites ±0 1m 53s ⏱️ -2s Results for commit c477fae. ± Comparison against base commit 0545159. This pull request removes 1 test.♻️ This comment has been updated with latest results. |
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1. Implement a zero-copied approach to read string data from Arrow to TF. 2. Accelerate the shuffle operation of string type in ParquetDataset. preliminary benchmarking results - col=300, `batch_size`=1000 - `Intel(R) Xeon(R) Platinum 8369B CPU @ 2.90GHz` with 128 logical cores. | Dataset | list type | shuffling | throughput (samples/s) | speedup over TFRecord | | --- | --- | --- | --- | --- | | TFRecord | N | N | 1404.23 | 1.0 | | HbParquet | N | N | 41137.53 | 29.3 | | HbParquet-ZeroCopy | N | N | 51335.40 | 36.56 | | TFRecord | N | Y | 1343.10 | 1.0 | | HbParquet | N | Y | 6629.60 | 4.9 | | HbParquet-ZeroCopy | N | Y | 10941.25 | 8.1 | | TFRecord | Y | N | 1352.05 | 1.0 | | HbParquet | Y | N | 2307.33 | 1.71 | | HbParquet-ZeroCopy | Y | N | 2869.98 | 2.12 | | TFRecord | Y | Y | 1367.96 | 1.0 | | HbParquet | Y | Y | 1080.03 | 0.79 | | HbParquet-ZeroCopy | Y | Y | 1454.02 | 1.06 | Signed-off-by: langshi.cls <langshi.cls@alibaba-inc.com>
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preliminary benchmarking results
batch_size=1000Intel(R) Xeon(R) Platinum 8369B CPU @ 2.90GHzwith 128 logical cores.