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Know-how is the energy that drives our lives. It’s merely bodily impossible to do excessive velocity file transfers with out impacting the general performance of the system ultimately, since you are using plenty of shared sources in the process. Multi-threading means running multiple threads on the identical time.
Because you should have a distinct ‘combine’ of instructions this fashion, running the ‘regular’ and ‘SIMD’ threads on a single physical core might give you better results with HT. Even though computers have a number of cores today, there are often many extra threads than there are cores, so thread switching (multiplexing) continues to be required.
And given that the sequential elements of the code would generally slow down the parallel elements anyway, in practice it is not that much of an issue that the multithreaded code doesn’t run as shortly on 4 cores with HT as it will on 8 dedicated cores.
In some cases, the programmer might not even concentrate on it. The OS might start some threads in the background for a number of the capabilities he calls, and some of the objects he makes use of, though he solely uses a single thread himself.
Briefly, AMD isn’t the way in which to go… This text is already just a few years outdated, and new iterations of Core i7 CPUs have opened up the gap even wider. Before reading your article I didn’t know much about HT and thought that one process merely can’t have extra that 50% bodily core clocks on i3 (1.85 GHz with a given CPU).