Nargo parallel execution

[ihyunnam]

Hi, I'm wondering whether nargo commands (using CLI) parallelize work across multiple cores and if not done automatically, whether it's possible to turn on the feature. I tested "nargo execute" on different numbers of cores and even though the work seems equally distributed across all cores, the amount of time it takes to "nargo execute" stays the same across all settings. I find this really strange...

[Savio-Sou]

It depends on the specific commands, e.g. as of this moment:

• nargo compile works in parallel across packages
• nargo execute works sequentially
• nargo test works in parallel across tests

[wu-s-john]

I was thinking of this too. To be more specific, does Noir generate it's execution trace/witnesses in a single-threaded manner or is it parallel? It seems like it does it in a single threaded manner

[Savio-Sou]

Execution (i.e. witness generation) is single-threaded as it stands, yes.