Re: What integer C type to use

Michael S <already5chosen@yahoo.com> schrieb:

Even for Cray/NEC-style vectors, the same throughput for different
precision is not an universal property. Cray's and NEC's vector
processors happen to be designed like that, but one can easily imagine
vector processors of similar style that have 2 or even 3 times higher
throughput for SP vs DP.
I personally never encountered such machines, but would be surprised if
it were never built and sold back by one or another usual suspect (may
be, Fujitsu?) in days when designers liked Cray's style.

I worked on such a machine, and (IIRC) single precision was faster
on that machine.  That may have been due to the comparatively
low memory throughput of the single load/store pipeline that it had.

But it's been a few decades, and my memory may be off (and I don't
have any handbooks from the time).