Parallelism & Collectives

Data, tensor, and pipeline parallelism, sharding, all-reduce and all-to-all, NVLink and InfiniBand.

0 / 10 solved
0/10 solved
Question Tags Difficulty Success
1. GPipe to 1F1B, What Actually Changes
pipeline-parallelism1f1b +3
Hard —
2. The Partial Sum Problem
parallelismtensor-parallelism +1
Medium —
3. Token, Meet Expert
moecollectives
Hard —
4. Ring's Constant Toll
collectivesring-all-reduce +1
Hard —
5. Bubble Trouble
pipeline-parallelismpipeline-bubble +1
Hard —
6. Softmax on a Rotating Ring
ring-attentionsequence-parallelism +2
Hard —
7. The NVLink Leash
bandwidthnvlink +1
Insane —
8. The 1.5x Tax
zerofsdp +1
Insane —
9. The 1.5x Tax
zero-3fsdp +2
Insane —
10. Four-Way Split, Zero Bubble
dualpipemoe +3
Insane —

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