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Do you need to set the maxParallelForks as well?

test.maxParallelForks = System.getProperty("maxTestParallelForks")?.toInt() ?: ((Runtime.getRuntime().availableProcessors() / 2).takeIf { it > 0 } ?: 1)

and when you run your build, you need

--parallel

or gradle.properties needs

org.gradle.parallel=true

No maxParallel fork not needed.

Sure, but you probably need to see how Gradle gets to that point: https://docs.gradle.org/current/userguide/java_testing.html#sec:test_execution

You're applying the system properties to the

test

suite, not the

smokeTest

one.

Correct. This solved my issue. Thank you so much Thomas for the reply.