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John Bradford <john@grabjohn.com> writes: > Do you know of anybody who has actually made a prototype board from > any of these CPU designs? Is my idea of running a lot of simple CPUs > together fundamentally flawed, or is it possible to overcome the > inefficiencies of SMP, if the CPUs are designed for it from the ground > up? The fundamental problem is not inefficiencies of SMP. But rather there are some tasks that simply do not parallelize well. Big supercomputer kinds of applications that require a lot of number crunching usually benefit from multiple cpus. But small every day applications don't. The only applications that scale perfectly with the number of cpus are the embarrassingly parallel ones, in which no communication is involved between the various subtasks. This is not to say an elegant design might not get there, AMD is trying for that. But simple brute force will certainly not get you there. Eric - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/ | ||||||||||||
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