Job/MRTask/FJTask Overview
==========================

A GLM job gets broken down into MRTask2 tasks, and subsequently into
Fork/Join tasks.  FJ tasks are spread across the cluster in a
logarithmic tree fashion with computation performed at the leaves and
results rolled up to the top.

.. image:: PngGen/pictures/GLMAlgoMem.png
   :width: 90 %

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