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From Danny Bickson <>
Subject Re: Fwd: Another mahout ALS question
Date Sat, 05 Mar 2011 01:15:24 GMT
I perfectly agree. And I just fixed the graph to plot the full range of
Thanks for the confirmation about experiment setup. If anyone has any tips I
would love to hear them further.

- Danny

On Fri, Mar 4, 2011 at 8:02 PM, Ted Dunning <> wrote:

> I generically dislike graphs with offset references.
> Your run-time graph has a baseline of 1500 seconds which makes it tricky
> for the reader to understand your (entirely correct) statement that having
> more than 8 machines isn't helpful.  The way you plotted the graph
> coincidentally looks like nearly perfect speedup across the entire range.
> No comments about your setup.  My guess is that you could tune hadoop to
> get a better result due to lower overheads but the results won't be
> categorically different.  Iterative algorithms on stock hadoop are just
> plain problematic.
> On Fri, Mar 4, 2011 at 4:33 PM, Danny Bickson <>wrote:
>> I would love to get any feedback you or others may have about the setup of
>> this experiment.

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