Hello,

I’m puzzled by the report from lstopo about the number of physical cores on an 
iMac with
I5-7500. It is specified by Intel as a quad core processor and lstopo reports 
only 2 cores:
lstopo
<<
Machine (8192MB total) + NUMANode L#0 (P#0 8192MB) + L3 L#0 (6144KB)
  Core L#0
    L2 L#0 (256KB) + L1d L#0 (32KB) + L1i L#0 (32KB) + PU L#0 (P#0)
    L2 L#1 (256KB) + L1d L#1 (32KB) + L1i L#1 (32KB) + PU L#1 (P#1)
  Core L#1
    L2 L#2 (256KB) + L1d L#2 (32KB) + L1i L#2 (32KB) + PU L#2 (P#2)
    L2 L#3 (256KB) + L1d L#3 (32KB) + L1i L#3 (32KB) + PU L#3 (P#3)
>>
When running system_profiler SPHardwareDataType
I obtain:
<<
Hardware:

    Hardware Overview:

      Model Name: iMac
      Model Identifier: iMac18,3
      Processor Name: Intel Core i5
      Processor Speed: 3,4 GHz
      Number of Processors: 1
      Total Number of Cores: 4
      L2 Cache (per Core): 256 KB
      L3 Cache: 6 MB
      Memory: 8 GB
      Boot ROM Version: IM183.0151.B00
      SMC Version (system): 2.41f1
      Serial Number (system): DGKV7HJCJ1GN
      Hardware UUID: 3FDAD77B-F4E8-50AB-B0FF-AA5C41CA35FA
>>

Is there a trick ?

Thanks for you help,

Olivier Cessenat

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