I am running a code that uses up to 60% of CPU on my quad-core machine, suggesting that it is using some subkernel, introducing overhead in the computations and slowing down the program which is not optimized for parallel computing.

How do I check how many subkernels are currently running?

How do I tell Mathemtatica not to use any subkernel?

I use Mathematica 11.3 on a windows 10 64bit machine

  • $\begingroup$ Computing subkernels launch when you run either LaunchKernels[] or run some Parallel*[] functionality. You can see any subkernel processes from within Windows Task Manager. $\endgroup$ – ktm Nov 6 '18 at 16:06

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