1、背景介绍
目前项目中采用D3000通过PCIE 4.0 x16 与一个华为昇腾310P模组相连，可通过华为提供的工具包测试PCIE带宽.
2、测试命令
bash
ascend-dmi --bw3、实测结果
Host应该是指D3000 ，Device指310P模组
bash
Device to Device Test
Device 0: Ascend 310P1.
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Size(Bytes) Execute Times Bandwidth(GB/s) Elapsed Time(us)
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2 5 0.000086 43.15
4 5 0.000170 43.75
8 5 0.000352 42.32
16 5 0.000704 42.32
32 5 0.001370 43.51
64 5 0.002793 42.68
128 5 0.005698 41.84
256 5 0.011331 42.08
512 5 0.022663 42.08
1024 5 0.045455 41.96
2048 5 0.090652 42.08
4096 5 0.180791 42.20
8192 5 0.348774 43.75
16384 5 0.697548 43.75
32768 5 1.365333 44.70
65536 5 2.673629 45.66
131072 5 5.145729 47.45
262144 5 9.525581 51.26
524288 5 19.095571 51.14
1048576 5 36.328160 53.76
2097152 5 65.015873 60.08
4194304 5 112.219178 69.62
8388608 5 172.690382 90.48
16777216 5 236.378720 132.20
33554432 5 279.173589 223.88
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Device to Host Test
Device 0: Ascend 310P1.
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Size(Bytes) Execute Times Bandwidth(GB/s) Elapsed Time(us)
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2 5 0.000191 10.49
4 5 0.000373 10.73
8 5 0.000763 10.49
16 5 0.001491 10.73
32 5 0.002983 10.73
64 5 0.005965 10.73
128 5 0.011185 11.44
256 5 0.023342 10.97
512 5 0.047722 10.73
1024 5 0.093369 10.97
2048 5 0.190887 10.73
4096 5 0.390452 10.49
8192 5 0.780903 10.49
16384 5 1.561806 10.49
32768 5 2.987803 10.97
65536 5 6.108398 10.73
131072 5 8.867029 14.78
262144 5 11.106178 23.60
524288 5 14.758545 35.52
1048576 5 18.325194 57.22
2097152 5 21.043285 99.66
4194304 5 22.410428 187.16
8388608 5 23.409429 358.34
16777216 5 23.943091 700.71
33554432 5 24.140221 1389.98
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Host to Device Test
Device 0: Ascend 310P1.
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Size(Bytes) Execute Times Bandwidth(GB/s) Elapsed Time(us)
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2 5 0.000191 10.49
4 5 0.000381 10.49
8 5 0.000763 10.49
16 5 0.001491 10.73
32 5 0.003121 10.25
64 5 0.006243 10.25
128 5 0.012202 10.49
256 5 0.024403 10.49
512 5 0.048806 10.49
1024 5 0.099883 10.25
2048 5 0.195226 10.49
4096 5 0.399532 10.25
8192 5 0.780903 10.49
16384 5 1.527099 10.73
32768 5 3.054199 10.73
65536 5 5.975607 10.97
131072 5 9.162597 14.31
262144 5 12.082545 21.70
524288 5 16.915564 30.99
1048576 5 20.745502 50.54
2097152 5 22.966300 91.31
4194304 5 24.399703 171.90
8388608 5 25.276129 331.88
16777216 5 25.861354 648.74
33554432 5 26.130243 1284.12
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