My desktop PC is equipped with an Epyc 7313p processor with 16 cores. I am using VMware along with the OpenSUSE LINUX emulator, which I use to run OpenFOAM Computational Fluid Dynamics code. When I run the linux command lscpu, the output is shown below, but the basic message is that the CPU has 4 cores. However, it should show 16 cores. Also, in OpenFOAM, when I try to use 16 cores it gives an error message. How can I adjust computer and/or BIOS settings to enable the use of all 16 cores? Please help me, as I am not benefiting from my investment in time and money spent on the processor.
boffin5@localhost:~/OpenFOAM/OpenFOAM-9/tutorials/incompressible/simpleFoam/motorBike/system$ lscpu
Architecture: x86_64
CPU op-mode(s): 32-bit, 64-bit
Address sizes: 45 bits physical, 48 bits virtual
Byte Order: Little Endian
CPU(s): 4
On-line CPU(s) list: 0-3
Vendor ID: AuthenticAMD
Model name: AMD EPYC 7313P 16-Core Processor
CPU family: 25
Model: 1
Thread(s) per core: 1
Core(s) per socket: 1
Socket(s): 4
Stepping: 1
BogoMIPS: 6000.00
Flags: fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36
clflush mmx fxsr sse sse2 syscall nx mmxext pdpe1gb rdtscp lm constant_t
sc rep_good nopl tsc_reliable nonstop_tsc cpuid extd_apicid tsc_known_fr
eq pni pclmulqdq ssse3 fma cx16 sse4_1 sse4_2 x2apic movbe popcnt aes xs
ave avx f16c rdrand hypervisor lahf_lm cr8_legacy abm sse4a misalignsse
3dnowprefetch osvw topoext ibpb vmmcall fsgsbase bmi1 avx2 smep bmi2 rds
eed adx smap clflushopt clwb sha_ni xsaveopt xsavec xgetbv1 xsaves clzer
o arat umip vaes vpclmulqdq rdpid overflow_recov succor
Virtualization features:
Hypervisor vendor: VMware
Virtualization type: full
Caches (sum of all):
L1d: 128 KiB (4 instances)
L1i: 128 KiB (4 instances)
L2: 2 MiB (4 instances)
L3: 128 MiB (4 instances)
NUMA:
NUMA node(s): 1
NUMA node0 CPU(s): 0-3
Vulnerabilities:
Itlb multihit: Not affected
L1tf: Not affected
Mds: Not affected
Meltdown: Not affected
Spec store bypass: Vulnerable
Spectre v1: Mitigation; usercopy/swapgs barriers and __user pointer sanitization
Spectre v2: Mitigation; Retpolines, IBPB conditional, STIBP disabled, RSB filling
Srbds: Not affected
Tsx async abort: Not affected
