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Hard Ware Emulation

K

Kato1144

Limp Gawd
Joined
Oct 18, 2007
Messages
359
Hey I was wondering if any one knew a way to emulate 4 CPU cores to look like one, I know there will be a resource loss of 30% to 40% but I would still like to do it. Anyway i found some ppl talking about using Virtual machine and several OS's to simulate a multiple core to to look and act like a single core.

-Kato
 
Not really feasible at the moment. The simplest way of explaining is it that you inherently run into similar challenges faced by pipeline processor architecture, just more so. Since you would be executing 4 times as many instructions at once, the pipeline essentially becomes 4 times the size (which is why the Pentium 4 was rather inefficient if you care to look it up). Long pipelines really slow stuff down unless programs are written specifically for them. You are also faced with somehow creating bypasses between the cores to insure data integrity due to the pipeline design (which would require completely different processor architecture). You also have to make sure that all the cache's have the proper data at any given time, requiring more instructions and overhead. There is a lot more to it, but it really isn't worth attempting due to the significant performance penalty. Essentially programs would have to be written specifically for such a scenario for optimal performance, at which point you might as well just write the software to be multithreaded and forget about all the headaches.
 
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