Implementation differences between regular tall array operations and mapreduce

Hello together,

I have a question regarding the way Matlab processes the data with a tall array, and more specifically what is the difference to mapreduce.

I could of course code the two and compare the performance but I would like to understand the underlying mechanism.

The mechanism for mapreduce is clearly described in the matlab documentation.

https://in.mathworks.com/help/matlab/import_export/getting-started-with-mapreduce.html

This is nonetheless not the case for regular operations on tall array.

So, imagine I have a tall array which is a vector of temperature records and that I want to take the max of it, what will be the difference between taking the max of the tall array and using a mapreduce implementation?

Thanks in advance.

Answer 1

[Kartheek Akurati]

Hello Eric Martin,

Detailed information regarding Tall arrays is here:https://www.mathworks.com/help/matlab/import_export/tall-arrays.html

Thanks and regards,

Kartheek.