Any way to limit the number of "Microsoft C-C++ Compiler Driver" /cl.exe instances while compile?

[Morderkainer]

@UnrealEverything

I used to have the same problem on my old machine, this BuildConfiguration.xml worked for me:

<?xml version="1.0" encoding="utf-8" ?>
<Configuration xmlns="https://www.unrealengine.com/BuildConfiguration">
<ParallelExecutor>
<MaxProcessorCount>2</MaxProcessorCount>
</ParallelExecutor>
</Configuration>

Replace 2 with the desired number. Or try ProcessorCountMultiplier with a value less than 1 instead. Note that there are different types of executors, each one can have a different configuration.

Thanks, already had the** X **thing, but looks like it does nothing, doesn’t matter if I set 1 or 200. What did the trick was the 0.X , lowering the decimal number I’ve been able to limit the number of cl.exe and compiler driver instances.

Just in case someone needs this fix, this is my BuildConfiguration.xml, just tweak 0.5 number, smaller decimal = less threads, bigger decimal up to 1 = more threads. MaxProcessorCount looks like does nothing, just matched the number of threads at **Building X actions with Z processes… **after tweaking **ProcessorCountMultiplier **just in case.

<?xml version="1.0" encoding="utf-8" ?>
<Configuration xmlns="https://www.unrealengine.com/BuildConfiguration">
   <ParallelExecutor>
      <ProcessorCountMultiplier>0.5</ProcessorCountMultiplier>
      <MaxProcessorCount>4</MaxProcessorCount>
   </ParallelExecutor>
</Configuration>