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92 Open 140 Closed
92 Open 140 Closed
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Issues list

Why is the NCCL test rate of my 4090x8 card so low?
#270 opened Nov 20, 2024 by gogoman010310
P2P performance with nccl-tests vs nvbandwidth
#268 opened Nov 19, 2024 by goelayu
how overall throughout calculate about all2all
#267 opened Nov 19, 2024 by ltm920716
2
question for NCCL write data size
#266 opened Nov 18, 2024 by gabbychen
4
Test CUDA failure common.cu:941 'system not yet initialized'
#264 opened Nov 7, 2024 by vijayaramaraju-kalidindi
6
Test CUDA failure common.cu:941 'invalid device ordinal' when test two nodes with nvhpc
#263 opened Nov 4, 2024 by heya5
3
Difference between in_place and out_of_place
#261 opened Nov 4, 2024 by 17113325
5
How to run nccl test in vm without nvswitch passthroughed?
#260 opened Oct 31, 2024 by joydchh
1
nccl-tests did not perform as expected
#257 opened Oct 15, 2024 by yalbaba
3
NCCL topology on the VM of H200
#256 opened Oct 10, 2024 by wangjiafu0310
4
BW test on V100 4 GPUS is not matched with InfiniBand EDR (Connect-X4)
#251 opened Sep 12, 2024 by javak87
Enable P2P on pcie in a nvlink machine
#250 opened Sep 9, 2024 by cll24
1
NCCL_Algo=Tree
#246 opened Aug 9, 2024 by afattaholman
1
What does dma_buf do when gpuDirectRdma is disabled ?
#245 opened Aug 2, 2024 by Pavani-Panakanti
1
AllReduce Bus Bandwidth decreases with larger network latency
#241 opened Jul 29, 2024 by chenzhu99
all_reduce algo factor for NVLink SHARP In network reductions
#238 opened Jul 23, 2024 by OrenLeung
how to calculate the tree based allreduce ib bw?
#237 opened Jul 22, 2024 by echobinarybytes
2 Node Nccl Test don’t work
#236 opened Jul 21, 2024 by SdEnd
7
How do we comprehend the factor between algBw and busBw?
#235 opened Jul 20, 2024 by lianghao208
5
What's multi-allreduce ?
#234 opened Jul 19, 2024 by ProHuper
1
what is cu:990 error? how to solve this problem?
#230 opened Jun 27, 2024 by MAKER-park
5
stepbytes (increment size) argument does not support 1M notation
#225 opened Jun 14, 2024 by StefanoSalsano
1
mpirun all_reduce_perf hang with multi-device test
#223 opened Jun 13, 2024 by 913871734
NCCL WARN Cannot use cuda/gdr transports as part of specified UCX_TLS
#222 opened Jun 7, 2024 by liuxingbo12138
5
1 GiB headroom might be too small
#220 opened May 31, 2024 by Namnamseo
ProTip! no:milestone will show everything without a milestone.