Farming on a virtual machine with error: "Caught plotting error: Bitfield plotting not supported by CPU"

[y-ang2010]

Hey all. I got a virtual machine for test:

Name	Info
sys	Centos 7 X86_64
CPU	4
RAM	4 GB
DISK	400GB

and run cmd "chia plots create -k 32 -n 2" in a virtual machine get error :
“Caught plotting error: Bitfield plotting not supported by CPU”

# chia plots create  -k 32 -n 2 


.......
Caught plotting error: Bitfield plotting not supported by CPU
Traceback (most recent call last):
  File "/root/workspace/chia-blockchain/venv/bin/chia", line 8, in <module>
    sys.exit(main())
  File "/root/workspace/chia-blockchain/venv/lib/python3.7/site-packages/src/cmds/chia.py", line 76, in main
    cli()  # pylint: disable=no-value-for-parameter
  File "/root/workspace/chia-blockchain/venv/lib/python3.7/site-packages/click/core.py", line 829, in __call__
    return self.main(*args, **kwargs)
  File "/root/workspace/chia-blockchain/venv/lib/python3.7/site-packages/click/core.py", line 782, in main
    rv = self.invoke(ctx)
  File "/root/workspace/chia-blockchain/venv/lib/python3.7/site-packages/click/core.py", line 1259, in invoke
    return _process_result(sub_ctx.command.invoke(sub_ctx))
  File "/root/workspace/chia-blockchain/venv/lib/python3.7/site-packages/click/core.py", line 1259, in invoke
    return _process_result(sub_ctx.command.invoke(sub_ctx))
  File "/root/workspace/chia-blockchain/venv/lib/python3.7/site-packages/click/core.py", line 1066, in invoke
    return ctx.invoke(self.callback, **ctx.params)
  File "/root/workspace/chia-blockchain/venv/lib/python3.7/site-packages/click/core.py", line 610, in invoke
    return callback(*args, **kwargs)
  File "/root/workspace/chia-blockchain/venv/lib/python3.7/site-packages/click/decorators.py", line 21, in new_func
    return f(get_current_context(), *args, **kwargs)
  File "/root/workspace/chia-blockchain/venv/lib/python3.7/site-packages/src/cmds/plots.py", line 134, in create_cmd
    create_plots(Params(), ctx.obj["root_path"])
  File "/root/workspace/chia-blockchain/venv/lib/python3.7/site-packages/src/plotting/create_plots.py", line 176, in create_plots
    args.nobitfield,
RuntimeError: std::exception

my virtual machine cpu info:

# lscpu
CPU op-mode(s): 32-bit, 64-bit
Byte Order: Little Endian
CPU(s): 4
On-line CPU(s) list: 0-3
Thread(s) per core: 1
Core(s) per socket: 4
Seat: 1
NUMA node: 1
Vendor ID: GenuineIntel
CPU series: 15
Model: 6
Model name: Common KVM processor
Step: 1
CPU MHz: 2294.686
BogoMIPS: 4589.37
Hypermanager manufacturer: KVM
Virtualization type: Full
L1d cache: 32K
L1i cache: 32K
L2 cache: 4096K
L3 cache: 16384K
NUMA node 0 CPU: 0-3
Flags:   fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush mmx fxsr sse sse2 ht syscall nx lm constant_tsc nopl xtopology eagerfpu pni cx16 x2apic hypervisor lahf_lm

# cat /proc/cpuinfo
processor	: 0
vendor_id	: GenuineIntel
cpu family	: 15
model		: 6
model name	: Common KVM processor
stepping	: 1
microcode	: 0x1
cpu MHz		: 2294.686
cache size	: 16384 KB
physical id	: 0
siblings	: 4
core id		: 0
cpu cores	: 4
apicid		: 0
initial apicid	: 0
fpu		: yes
fpu_exception	: yes
cpuid level	: 13
wp		: yes
flags		: fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush mmx fxsr sse sse2 ht syscall nx lm constant_tsc nopl xtopology eagerfpu pni cx16 x2apic hypervisor lahf_lm
bogomips	: 4589.37
clflush size	: 64
cache_alignment	: 128
address sizes	: 40 bits physical, 48 bits virtual
power management:
...
...
...

can anyone help me?

[hoffmang9]

You have to use a processor that supports popcnt or disable bitfield plotting. I have no idea what your virtualization software is up to but I also caution you that virtualized plotting is going to be significantly slower than plotting directly on the real CPU.

[dellch]

@hoffmang9 What about plotting via type-1 hypervisor like hyper-v instead of something like virtualbox?