Comparison of two variables with IF loop Post: 302758971

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icetsingleimagestrategy

icetSingleImageStrategy(3)					  IceT Reference					icetSingleImageStrategy(3)

NAME

       icetSingleImageStrategy -- set the sub-strategy used to composite the image for a single tile.

Synopsis
       #include <IceT.h>

       void icetSingleImageStrategy(   IceTEnum   strategy  );

Description
       The  main  IceT algorithms are specially designed to composite data defined on multiple tiles. Some of these algorithms, namely ICET_STRAT-
       EGY_REDUCE and ICET_STRATEGY_SEQUENTIAL, operate at least in part by compositing single images together. IceT also comes with multiple sep-
       arate strategies for performing this single image compositing, and this can be selected with the icetSingleImageStrategy function.

       A single image strategy is chosen from one of the following provided enumerated values:

       ICET_SINGLE_IMAGE_STRATEGY_AUTOMATIC
	       Automatically chooses which single image strategy to use based on the number of processes participating in the composition.

       ICET_SINGLE_IMAGE_STRATEGY_BSWAP
	       The  classic  binary  swap compositing algorithm. At each phase of the algorithm, each process partners with another, sends half of
	      its image to its partner, and receives the opposite half from its partner. The processes are then partitioned into two  groups  that
	      each have the same image part, and the algorithm recurses.

       ICET_SINGLE_IMAGE_STRATEGY_RADIXK
	       The  radix-k acompositing algorithm is similar to binary swap except that groups of processes can be larger than two. Larger groups
	      require more overall messages but overlap blending and communication. The size  of  the  groups  is  indirectly  controlled  by  the
	      ICET_MAGIC_K environment variable or CMake variable.

       ICET_SINGLE_IMAGE_STRATEGY_TREE
	       At  each  phase,  each  process	partners with another, and one of the processes sends its entire image to the other. The algorithm
	      recurses with the group of processes that received images until only one process has an image.

       By default IceT sets the single image strategy to ICET_SINGLE_IMAGE_STRATEGY_AUTOMATIC when a context is created. This is the single  image
       strategy that will be used if no other is selected.

Errors
       ICET_INVALID_ENUM
	       The strategy argument does not represent a valid single image strategy.

Warnings
       None.

Bugs
       None known.

Copyright
       Copyright (C)2010 Sandia Corporation

       Under the terms of Contract DE-AC04-94AL85000 with Sandia Corporation, the U.S. Government retains certain rights in this software.

       This source code is released under the New BSD License.

See Also
       icetDrawFrame(3), icetGetStrategyName(3) icetSingleImageStrategy(3)

IceT Reference							  August  9, 2010					icetSingleImageStrategy(3)