Research Article
Accelerating the HyperLogLog Cardinality Estimation Algorithm
Table 1
Optimum parameters for each platform.
| Platform | Xeon Phi | Sandy Bridge | K20 | S9150 |
| Chunk size (in items) | | | | | Work-group size | 256 | 1024 | 128 | 128 | Elements per work-item | 1 | 1 | 2 | 4 |
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