VTune reporting the wrong number of threads?

Developer Software Tools Analyzers
1

I posted this on the TBB forum here:

https://community.intel.com/t5/Intel-oneAPI-Threading-Building/Task-Arena-being-initialized-with-64-but-only-using-23/m-p/1288568#M14872

but I’m wondering if anyone using VTune has seen this happen. Basically, if I have an app using TBB (see the above link for more details on the app’s code), and try to reserve 64 threads, when I do a threading analysis with VTune, it says the app only used something like 23 threads. Any ideas why that happens?

2

Hi

Thank you for posting in Intel Forums. As there are two different threads regarding this issue, we are marking this thread as duplicate. Your issue would be monitored in the link below:

https://community.intel.com/t5/Analyzers/Task-Arena-being-initialized-with-64-but-only-using-23/m-p/1288568#U1288568