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Trying to port openblas for android. the openblas for android took from here https://sourceforge.net/projects/openblas/files/v0.2.8-arm/openblas-v0.2.8-android-rc1.tar.gz/download. This is my time measures for cblas_sgemm

1. android  samsung s6
         0.003 s for 100x100  sgemm
         3.130 s for 1000X1000  sgemm
2. windows x64 intel i5
         0.001 s for 100x100  sgemm
         0.080 s for 1000X1000  sgemm

What causing to openblas run so slow with 1000X1000 matrix in android. How i can improve it?

user10333
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  • two reasons: the processor is not nearly as powerful and there is much less main memory which causes swapping. – Henry Dec 31 '17 at 11:14
  • You right it is main memory.I used 64 bit compilation for armv8 and execution times now comparable for andoird and windows. – user10333 Jan 30 '18 at 11:48

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