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OSX and Mac Performance

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CustomBuilt
CustomBuilt 2016-10-18
评论： John D'Errico 2017-6-22
I have two apple computers and thought it would be an interesting to compare performance (computer spec below)
COMPUTER A
  • Model Name: Mac Pro
  • Model Identifier: MacPro6,1
  • Processor Name: 6-Core Intel Xeon E5
  • Processor Speed: 3.5 GHz
  • Number of Processors: 1
  • Total Number of Cores:6
  • L2 Cache (per Core): 256 KB
  • L3 Cache: 12 MB
  • Memory: 64 GB
COMPUTER B
  • Model Name: MacBook Air
  • Model Identifier: MacBookAir6,2
  • Processor Name: Intel Core i7
  • Processor Speed: 1.7 GHz
  • Number of Processors: 1
  • Total Number of Cores:2
  • L2 Cache (per Core): 256 KB
  • L3 Cache: 4 MB
  • Memory: 8 GB
I use a simple fft() in a loop to test performance
function [ X ] = test( x )
a = 1:10000000;
for i = a
fft(x);
end
end
The performance is measured by timeit()
>> x = randn(8,1)
>> temp = @() test(x)
>> timeit(temp)
Computer A = 15.1 seconds Computer B = 11.1 seconds
The MacBook Air spanks the Mac Pro for performance
Why is this the case?
  1 个评论
Ken Atwell
Ken Atwell 2016-10-18
That is not much of an FFT. What if the vector is of a more realistic size, a say 1K or 2K?

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回答（1 个）

Nelson Mark
Nelson Mark 2017-6-22
This is interesting and caught my eye because I'm thinking of buying a Mac Pro. Would you be willing to run some additional benchmarks on some different types of computations? e.g., generate 10000 X 5 random matrices, then doing least squares of column 1 on columns 2-5, 1000 times.
  1 个评论
John D'Errico
John D'Errico 2017-6-22
This is not an answer. Please don't add answers just to make a comment, certainly not on a question that has seen no activity for nearly a year.

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