News for hackers. Stuff that matters.

A comment on Dwarf Fortress Creator Explains Its Complexity and Origins [video]. Parent comment

Re:Dwarf Fortress Creator Explains Its Complexity and Origin... by foota on Thursday June 25, 2020 @09:19PM (#23647771)
Don't modern processors have more cache available between all cores than available to a single core?
[ Parent | on HN ]
Re:Dwarf Fortress Creator Explains Its Complexity and Origin... by jayd16 on Thursday June 25, 2020 @11:27PM (#23648368)
They must mean its memory I/O bound.
[ Parent | on HN ]
Re:Dwarf Fortress Creator Explains Its Complexity and Origin... by foota on Friday June 26, 2020 @01:52AM (#23649104)
I think they meant it only runs quickly enough when everything's in cache? But that doesn't make much sense to me. It's really hard for me to believe it'd be I/O bound though, when memory bandwidth is like tens+ of gigabytes per second?
[ Parent | on HN ]
Re:Dwarf Fortress Creator Explains Its Complexity and Origin... by imtringued on Friday June 26, 2020 @05:28AM (#23650194)
IO bound can also mean that memory latency is a problem. It's not difficult to believe that DF is doing lots of pointer chasing.
[ Parent | on HN ]