Hello, I'm starting with Dagster, and have just tried with the very recently released (0.12 !) Dynamic Mapping & Collect. It works on my case, but the dynamic steps are executed one after another (like in only 1 thread). I've checked with /proc/cpuinfo, and the 4 cores are reported. Is there any setting or what could I have done wrong?

I’m starting to use Dynamic Mapping & Collect as well. I came across a thread about this issue that may help: https://dagster.slack.com/archives/C01U954MEER/p1624484448069600?thread_ts=1624484304.069400&cid=C01U954MEER

Thanks!