Re: Marvell Armada
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- Subject: Re: Marvell Armada
- From: Mike Pall <mikelu-1201@...>
- Date: 2012年1月25日 15:07:24 +0100
David Burgess wrote:
> PS. I would love Mike to tell me what fastmult means on cat /proc/cpuinfo
> (features: swp half thumb fastmult vfp edsp iwmmxt thumbee)
It means that the CPU has a fast(er) multiplication unit (which is
rather expensive in chip space and power usage).
But it also shows that it has VFP, which LuaJIT currently doesn't
take advantage of. That would give a substantial speedup on
floating-point heavy benchmarks, such as SciMark. Of course, this
only matters if you're doing lots of FP operations in your app.
--Mike