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Table 4
Wall-clock timings of several operations on test set D (65 GB) on a server with a 40-core Intel Xeon CPU E5-2660 @ 2.20 GHz and 4 × 3TB RAID disks.
| Reading the uncompressed set | 277 s |
| Copying the uncompressed set | 679 s |
| Compress visibilities with 8-bit/AF-normalization | 387 s |
| Compress visibilities with 2-bit/AF-normalization | 356 s |
| Compress visibilities with 8-bit/RF-normalization | 374 s |
| Compress visibilities with 2-bit/RF-normalization | 351 s |
| Compress visibilities with 8-bit/row normalization | 378 s |
| Compress visibilities with 2-bit/row normalization | 332 s |
| Compress weights to 12 bits | 285 s |
| Imaging of uncompressed set | 339 s |
| Imaging of 8-bit compressed set | 236 s |
| Imaging of 2-bit compressed set | 198 s |
Notes. Values are averages of five runs.
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