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NCCL Tests on 2 node p3dn.24xlarge + EFA - all_reduce_perf -b 8 -e 1G -f 2 -g 1 -c 1 -n 100
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# | |
# out-of-place in-place | |
# size count type redop time algbw busbw error time algbw busbw error | |
# (B) (elements) (us) (GB/s) (GB/s) (us) (GB/s) (GB/s) | |
8 2 float sum 163.4 0.00 0.00 2e-07 164.4 0.00 0.00 1e-07 | |
16 4 float sum 162.9 0.00 0.00 1e-07 162.3 0.00 0.00 1e-07 | |
32 8 float sum 164.1 0.00 0.00 1e-07 164.0 0.00 0.00 1e-07 | |
64 16 float sum 163.6 0.00 0.00 1e-07 163.3 0.00 0.00 1e-07 | |
128 32 float sum 164.1 0.00 0.00 1e-07 161.6 0.00 0.00 1e-07 | |
256 64 float sum 162.5 0.00 0.00 1e-07 163.0 0.00 0.00 1e-07 | |
512 128 float sum 162.8 0.00 0.01 1e-07 163.7 0.00 0.01 1e-07 | |
1024 256 float sum 166.5 0.01 0.01 2e-07 163.3 0.01 0.01 2e-07 | |
2048 512 float sum 166.6 0.01 0.02 5e-07 167.0 0.01 0.02 5e-07 | |
4096 1024 float sum 168.3 0.02 0.05 5e-07 168.9 0.02 0.05 5e-07 | |
8192 2048 float sum 171.9 0.05 0.09 5e-07 172.2 0.05 0.09 5e-07 | |
16384 4096 float sum 174.9 0.09 0.18 5e-07 178.6 0.09 0.17 5e-07 | |
32768 8192 float sum 184.8 0.18 0.33 5e-07 185.3 0.18 0.33 5e-07 | |
65536 16384 float sum 196.0 0.33 0.63 5e-07 193.7 0.34 0.63 5e-07 | |
131072 32768 float sum 218.2 0.60 1.13 5e-07 219.0 0.60 1.12 5e-07 | |
262144 65536 float sum 271.2 0.97 1.81 5e-07 272.5 0.96 1.80 5e-07 | |
524288 131072 float sum 325.6 1.61 3.02 5e-07 319.8 1.64 3.07 5e-07 | |
1048576 262144 float sum 728.0 1.44 2.70 5e-07 729.5 1.44 2.70 5e-07 | |
2097152 524288 float sum 1121.1 1.87 3.51 5e-07 1107.9 1.89 3.55 5e-07 | |
4194304 1048576 float sum 2092.1 2.00 3.76 5e-07 2107.1 1.99 3.73 5e-07 | |
8388608 2097152 float sum 3006.8 2.79 5.23 5e-07 2996.1 2.80 5.25 5e-07 | |
16777216 4194304 float sum 4572.3 3.67 6.88 5e-07 4575.0 3.67 6.88 5e-07 | |
33554432 8388608 float sum 9453.7 3.55 6.66 5e-07 9399.5 3.57 6.69 5e-07 | |
67108864 16777216 float sum 18070 3.71 6.96 5e-07 18256 3.68 6.89 5e-07 | |
134217728 33554432 float sum 32258 4.16 7.80 5e-07 32298 4.16 7.79 5e-07 | |
268435456 67108864 float sum 55341 4.85 9.09 5e-07 55469 4.84 9.07 5e-07 | |
536870912 134217728 float sum 107602 4.99 9.36 5e-07 107709 4.98 9.35 5e-07 | |
1073741824 268435456 float sum 211943 5.07 9.50 5e-07 212070 5.06 9.49 5e-07 | |
# Out of bounds values : 0 OK | |
# Avg bus bandwidth : 2.81129 | |
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