The number of threads of batches is different according to the queues.
- queues ---- core ---- virtual core---- note
S 12 24
V 8 16 (virtual machine)
L(128-512) 32 64
Upper bounds of the number of threads in the node when OpenMP etc. are used become the numbers of virtual cores.
The best number of threads is between a real core and virtual core.
example,from 8 of V queues to 16 as.
As for the number of threads, with the highest effect, the operation density of the application used is controlled.
Therefore, the number of threads is encouraged to be decided after the performance is verified beforehand by the examination calculation.