How many threads should I run on this machine?
lscpu says there are 96 cores. Are those physical cores? What is the maximum and optimal thread that I can run on this machine?
https://stackoverflow.com/a/10670440/610569 show that I can run over 20 threads per core. Is that okay? Is that optimal?
alvas@server:~$ lscpu Architecture: x86_64 CPU op-mode(s): 32-bit, 64-bit Byte Order: Little Endian CPU(s): 96 On-line CPU(s) list: 0-95 Thread(s) per core: 2 Core(s) per socket: 12 Socket(s): 4 NUMA node(s): 4 Vendor ID: GenuineIntel CPU family: 6 Model: 62 Model name: Intel(R) Xeon(R) CPU E5-4657L v2 @ 2.40GHz Stepping: 4 CPU MHz: 2700.000 CPU max MHz: 2900.0000 CPU min MHz: 1200.0000 BogoMIPS: 4801.91 Virtualization: VT-x L1d cache: 32K L1i cache: 32K L2 cache: 256K L3 cache: 30720K NUMA node0 CPU(s): 0,4,8,12,16,20,24,28,32,36,40,44,48,52,56,60,64,68,72,76,80,84,88,92 NUMA node1 CPU(s): 1,5,9,13,17,21,25,29,33,37,41,45,49,53,57,61,65,69,73,77,81,85,89,93 NUMA node2 CPU(s): 2,6,10,14,18,22,26,30,34,38,42,46,50,54,58,62,66,70,74,78,82,86,90,94 NUMA node3 CPU(s): 3,7,11,15,19,23,27,31,35,39,43,47,51,55,59,63,67,71,75,79,83,87,91,95
Pardon my noobiness in cores/threads.