I ran with OMP_NUM_THREADS=1, but your point is well taken.
As for the original post, I felt a bit embarrassed about my original comments, but I think the compilers actually did fairly well based on what they were given, which I think is what you are saying in your first part.
As for the original post, I felt a bit embarrassed about my original comments, but I think the compilers actually did fairly well based on what they were given, which I think is what you are saying in your first part.