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Yes the examples you have all have multiple processing elements but they are vector processors. I was talking about simple and cheap scalar processors. GPUs rely on symmetry to sim…

That is an interesting idea. I wonder if a small processor core could be stamped out on an fpga and hundreds of small processors can run simultaneously. Then I wish my c++ objects …

Anyone can prefetch data into the cache, but letting programmers control cache eviction would open the door to all kinds of user errors which would kill performance.

A 10Mhz processor has a clock cycle of 100ns (0.1 millionths of a second). Those are just rough representative numbers I picked...any particular RAM delays would be different and t…

In the past (like around the time most programming languages were invented) memory speeds were faster than processor speeds. So all variable accesses were instantaneous. Languages …

GPUs are latency hiding engines...they address the mismatch between processor clock speeds and memory latency by a unique scheme. Since they can’t improve memory latency, instead t…

Agreed. Way back when, when I was young and stupid and knew everything, my head was full of logic puzzles and programming tricks. So it was easy to solve them in an interview. But …