More efficient way to load data

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Natialol 2013-4-1

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此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/69338-more-efficient-way-to-load-data

Hello,

Is there a more efficient way to load in data(array), I have a 1x10^7 which is roughly 4mb but takes almost 70s to load. Am using the

load('filename','varname')

command

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Matt J 2013-4-1

编辑：Matt J 2013-4-1

But you still have to move it into RAM. Why wouldn't that transfer limit your speed, since in your hierarchy it's 2nd in slowness only to Disk?

And if not, how does one explain the OP's 70sec load time.

Walter Roberson 2013-4-1

Loads from disk to RAM generally use DMA, and thus proceed in parallel. The decompression would mostly happen in CPU register and primary cache, with the flushes to secondary cache possibly in parallel (depending on the memory controller and the CPU properties.)

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