Type A ("ps" in chart): These work units are the very long running work units.
Runtime: 30-100 hours
Quantity: About 36,000 work units
Download: ~20 MBytes
Upload: ~2 MBytes
Identifier: ps
Results: Each type A work unit creates two type B work units: (one "se" and one "pe")
Checkpoints: 50 times within a work unit. Evenly throughout the run, every 2%.
Type B ("se" or "pe" in chart): These work units are faster with very frequent checkpoints.
Runtime: 5-10 Hours
Quantity: About 72,000 work units
Download: ~2MBytes (se) or ~20MBytes (pe)
Upload: ~2MBytes (se and pe)
Identifier: se, pe
Results: Each type B work unit creates about 250 to 350 type C workunits
Checkpoints: As frequently as every 10 seconds, but per member's project preferences
Type C: This type of work unit represents the bulk of the overall work to be done.
Runtime: 1 to 5 Hours
Quantity: About 22,000,000 work units.
Download: ~2MBytes (sq, sd, sr) or ~20MBytes (pq, pd, pr, pc, pl)
Upload: < 1MBytes
Identifier: pq, pd, pr, pc, pl, sq, sd, sr
Results: These are the final step. Results are sent to researchers
Checkpoints: As frequently as about 1 per minute, but per member's project preferences
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