FPU Utilization: Not supported for this CPU.

[Robert_M__Münch]

Hi, I want to run an HPC analysis since our app is heavy FPU intensive.

Our setup is an OSX host, Parallels VM with Windows 10 insider preview guest running on an "Intel(R) Core(TM) Processor code name Penryn" with Frequency: 3.2 GHz and  Logical CPU Count: 2

The FPU intensive part is inside a DLL that is loaded dynamically by our EXE.

I'm getting an "FPU Utilization: Not supported for this CPU." message, which I don't understand. Any idea what to do to measure FPU utilization etc.?

[Dmitry_P_Intel1]

Hello Robert,

HPC Performance Characterization analysis in VTune builds FPU-related metrics based on PMU events that are provided by hardware.

The fact is that these events are available in processors based on IvyBridge, Broadwell and SkyLake architectures.

I can recommend to use Intel Advisor that builds FPU metrics like FLOPS, instruction mix etc. based on instrumentation.

Thank you, Regards, Dmitry

[Robert_M__Münch]

Hi Dmitry, thanks a lot fo the clarification.

I guessed it was something in that line but wasn't sure. Maybe the tool can just provide some more specific information like: Your CPU doesn't support PMU events, hence we can't measure FPU metrics. Use Advisor instead.

Going to use Advisor for now.

[Dmitry_P_Intel1]

Hello Robert,

Thank you for the good suggestion! We will work on the message.

Regards, Dmitry