Hi Fons, really pleased to hear from you — sounds like you’re exactly the target audience for my article — clearly doing heavyweight scientific computing over there!
Glad you’ve had a positive experience, if you don’t mind I’ll borrow your ‘arch’ tip to clarify the above point on architectures? Although my main problem wasn’t getting it myself, it was that there are a variety already in use in the wild :(

Do you mind me asking what threading libraries you’re using?