[tiluha]

Testing some Hetzner Cloud instances

16-core ARM CAX41

root@ubuntu-32gb-fsn1-1:~# ./a.out

1 17.8

2 35.6

3 49.9

4 64.9

5 79.0

6 92.1

7 101.7

8 110.2

9 117.6

10 124.0

11 130.4

12 136.2

13 140.9

14 143.8

15 149.2

16 152.9

16 Core AMD shared CPX51

root@ubuntu-32gb-fsn1-1:~# ./a.out

1 18.9

2 37.5

3 54.3

4 65.4

5 77.2

6 92.8

7 100.8

8 92.1

9 95.1

10 105.7

11 93.4

12 100.9

13 89.9

14 97.0

15 99.1

16 107.8

16 core AMD dedicated CCX43

root@ubuntu-64gb-fsn1-1:~# ./a.out

1 36.3

2 71.6

3 56.8

4 50.8

5 63.4

6 57.2

7 53.4

8 50.9

9 55.2

10 61.3

11 64.4

12 65.3

13 66.5

14 68.8

15 69.2

16 64.4

Increasing the data volume for CCX43 to 48GB increases the bandwidth using 16 cores to 75.1. Memory bandwidth seems to scale pretty well with the number of cores on ARM. Interesting that the bandwidth for the shared AMD system is that much higher than the dedicated system