Comments (1)
NCCL should work on all power platforms and uses GPUDirect P2P or copies through system memory to get the best performance out of the platform.
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Related Issues (20)
- NCCL fails when starting a job with FSDP in containers using 2x DGX A100 (320GB) HOT 5
- The macro NCCL_SHARED_STEPS in NCCL, what does it mean?
- Why is MAX_REQUESTS <= 256?
- why net_ib.cc fifo & fifoReq is [64][8], not[8][8]?
- What is the meaning of these numbers in src/graph/tunning.cc ?
- Can I change Channels or Topograph after initialization?
- Questions about NVLS HOT 6
- Does NVLS algorithm support crossNic=2? HOT 9
- Dev not found HOT 8
- Questions about NVLS kernel code HOT 4
- Why NCCL doesn't use multiple ports in one nic for allreduce? HOT 3
- Is it not permitted to add cuda calls on the communication path of collectives?
- ncclCommAbort stuck during NCCL errors HOT 14
- Bitwise operation support for allreduce.
- Can I improve bandwidth by modifying the value of NCCL_STEPS?
- What is the CUDA runtime version corresponding to NCCL HOT 1
- Send operations in nccl trees HOT 3
- Training with Megatron-LM stuck and no nccl error. HOT 2
- Failover of NCCL Connection HOT 9
- Internal error in `ncclCommInitRank` (NCCL version 2.18.5+cuda12.2) HOT 1
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