time of execution of a code in matlab
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Hello, To compare the time of execution of two functions, i wrote a code where i measure the time elapsed for each function and for each index ( with the command clock /etime). However, on my computer the first function is faster than the second, and on an other computer, it's the opposite. ( I tried several time with different indexes and with clearing for each time the data ,but it is still the same result).
Can you explain me why there is such difference?
On both of them, Matlab version is r2017a , the only difference is that on one computer, the compiler is MinGW 4.9.2 ,and on the other one it's Microsoft Windows SDK 7.1 .
Thanks in advance
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Jan
el 13 de Abr. de 2017
Can you find the code lines inside freqxorr which are accelereated on the faster computer. It could either be multi-threading and a higher number of cores, or the data might match into a larger CPU cache, or the internally used library can use the SSE or AVX features fo the younger processor. Nevertheless, it is not surprising, that different functions can profit differently on different CPUs.
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