Re: why is octave 4.2.0 x86_64-w64-mingw32 so slow?

[louis scott]

It seems you've run into why people care about fast implementations of log/exp.

That's where your profiler show you are spending 50% of your time.

https://www.researchgate.net/publication/272178514_Fast_Exponential_Computation_on_SIMD_Architectures

https://software.intel.com/en-us/node/683452

More generally, to check your machine and octave version, try

https://octave.sourceforge.io/benchmark/

On Tue, Oct 24, 2017 at 1:41 PM, Nicholas Jankowski <address@hidden> wrote:

On Tue, Oct 24, 2017 at 8:38 AM, Nicholas Jankowski <address@hidden> wrote:

On Tue, Oct 24, 2017 at 8:35 AM, Nicholas Jankowski <address@hidden> wrote:

On Tue, Oct 24, 2017 at 5:41 AM, Ray Tayek <address@hidden> wrote:

I was debating giving your script a test run, but you didn't provide any sample, preferably simplified, inputs.

oh,wait, you posted two separate functions.  So, 'train' that you posted first calls 'fprop', correct? no other functions missing? If I run train(1) with both functions present, i should see what you're seeing?

nope, apparently there's at least a custom load_data function that we don't have. 

so, it seems unless you can provide a minimal, complete example to test we're not going to be able to help much.

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