[erlang-questions] Efficient sum matrix by column

Steve Vinoski vinoski@REDACTED
Sun Apr 12 22:48:15 CEST 2015

On Sun, Apr 12, 2015 at 3:49 PM, Alexander Petrovsky <askjuise@REDACTED>

> The proplists already sorted. Thanks, I will look at N-ary tree. Looks
> like the NIF it's not a good idea due the sum of two lists with 100000 each
> will be more then 1ms (btw I know about dirty schedulers).

You don't need dirty schedulers in this case. Have a look at
enif_schedule_nif, which would allow you to break the computation into
chunks that don't violate scheduler time constraints:


Here's an example from a presentation I've given covering schedulers and


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