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Blender Benchmark - multi socket CPU setup does not allow to run the benchmark
Open, Needs Triage by DeveloperPublic


Hi, Martin here from GarageFarm.NET.

I have tried your new benchmark utility and noticed an issue that the benchmark won't run on a multi socket setup.

We have nodes with E5-4669v4 CPUs which can be run in 3 configurations: 1CPU, 2CPU, 4CPU. I can run the benchmark without issues on 1CPU setup, but not on 2CPU or 4CPU.

I launched Blender Benchmark from command line and here's the error log:

location: <unknown location>:-1
Traceback (most recent call last):
  File "P:\blender\blender-benchmark-1.0beta-windows64\2.80\scripts\benchmark\benchmark\space\", line 602, in draw
  File "P:\blender\blender-benchmark-1.0beta-windows64\2.80\scripts\benchmark\benchmark\space\", line 536, in draw_welcome
    compute_device_list_get(None, context)
  File "P:\blender\blender-benchmark-1.0beta-windows64\2.80\scripts\benchmark\benchmark\space\", line 937, in compute_device_list_get
    global_cached_system_info = system_info_get(ctx)
  File "P:\blender\blender-benchmark-1.0beta-windows64\2.80\scripts\benchmark\benchmark\space\", line 413, in system_info_get
    info = system_info.gatherSystemInfo(ctx)
  File "P:\blender\blender-benchmark-1.0beta-windows64\2.80\scripts\benchmark\benchmark\foundation\", line 111, in gatherSystemInfo
    system_info["num_cpu_cores"] = int(cpu_topology['num_physical_cores'])
ValueError: invalid literal for int() with base 10: '22\r\r\n\r\r\n\r\r\nNumberOfCores'

It is a problem with reading the number of cores. I was able to launch the benchmark after editing file and setting fixed number of cores in that line (22 in our case).



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if changed in the script manually to the right value, all works fine:


system_info['cpu_brand'] = cpu_info['brand']

system_info["num_cpu_threads"] = 32
system_info["num_cpu_sockets"] = 2
system_info["num_cpu_cores"] = 8