[erlang-questions] clueless performance question

[Zvi]

from my PI serial benchmarks, floating point performance is weak point of
Erlang, since float values always allocated on the Heap.

So, if you need to iterate over range [0:0.001:1] using tail recursion, it's
much faster to iterate over integers [0:1000] and multiply it inside the
function to the step 0.001 .

The solution to this is itroducing APL/K/J/Q/Matlab - like vector/matrix of
doubles datatype with possible SIMD and SMP optimizations for element-wise
and reduction operators.

This was discussed on this list several months ago.

Zvi


Raoul Duke wrote:
> 
> (i mean this with an eye towards getting more arguments for Erlang,
> not against it. i googled around but haven't hit anything super
> relevant to this question yet.)
> 
> Erlang excels at concurrency and distribution. What aspects of the
> current Erlang VMs (HiPE and non-HiPE) make them possibly slower for
> serial computation vs. some other well-known VMs? If somebody wanted
> to work on tweaking the serial computation part, what might be the top
> things to examine (e.g. from personal experience, or from profiler
> usage)? This could be anything, like doing work on VM inner loops, or
> adding some more automatic optimization abilities.
> 
> sincerely.
> _______________________________________________
> erlang-questions mailing list
> erlang-questions@REDACTED
> http://www.erlang.org/mailman/listinfo/erlang-questions
> 
> 

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