[LINK] 10 tech laws that define our world

Glen Turner gdt at gdt.id.au
Thu Mar 8 12:13:49 AEDT 2012


> 9. Wirth's Law
> 
> Ever wondered why your seventy-three-core monster PC isn't noticeably faster at everyday tasks

Actually, Amdahl's Law is more to the point: Data requiring locking must
be accessed sequentially and can't gain from the speedup of more CPU
cores. And Amdahl's Argument: The amount of locked data increases with
the number of CPU cores. Therefore additional CPUs cores have falling
marginal throughput.

-- 
 Glen Turner <http://www.gdt.id.au/~gdt/>




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