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69 lines
3.1 KiB
Matlab
69 lines
3.1 KiB
Matlab
% GARRAY function that helps to wrap the GPU functions for user so that CPU and
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% GPU code is identical
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% If gpuDeviceCount > 0 or move_on_GPU == true, the returned array will be
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% moved to GPU, otherwise it will be returned as single
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%
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% array = Garray(array, move_on_GPU = true)
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%
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% Inputs:
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% **array Ndim array
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% **move_on_GPU if true, use GPU if possible
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% retuns:
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% ++array Ndim array single or gpuArray single
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%*-----------------------------------------------------------------------*
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%| |
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%| Except where otherwise noted, this work is licensed under a |
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%| Creative Commons Attribution-NonCommercial-ShareAlike 4.0 |
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%| International (CC BY-NC-SA 4.0) license. |
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%| |
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%| Copyright (c) 2017 by Paul Scherrer Institute (http://www.psi.ch) |
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%| |
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%| Author: CXS group, PSI |
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%*-----------------------------------------------------------------------*
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% You may use this code with the following provisions:
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%
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% If the code is fully or partially redistributed, or rewritten in another
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% computing language this notice should be included in the redistribution.
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%
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% If this code, or subfunctions or parts of it, is used for research in a
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% publication or if it is fully or partially rewritten for another
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% computing language the authors and institution should be acknowledged
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% in written form in the publication: “Data processing was carried out
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% using the “cSAXS matlab package” developed by the CXS group,
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% Paul Scherrer Institut, Switzerland.”
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% Variations on the latter text can be incorporated upon discussion with
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% the CXS group if needed to more specifically reflect the use of the package
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% for the published work.
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%
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% A publication that focuses on describing features, or parameters, that
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% are already existing in the code should be first discussed with the
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% authors.
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%
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% This code and subroutines are part of a continuous development, they
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% are provided “as they are” without guarantees or liability on part
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% of PSI or the authors. It is the user responsibility to ensure its
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% proper use and the correctness of the results.
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function array = Garray(array, move_on_GPU)
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persistent use_gpu
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if nargin == 2 && ~isempty(move_on_GPU)
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use_gpu = move_on_GPU;
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elseif isempty(use_gpu)
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use_gpu = gpuDeviceCount > 0; % always use GPU if not asked otherwise
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end
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if isa(array, 'double') && ~issparse(array)
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%% avoid doubles ...
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array = single(array);
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end
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if isa(array, 'gpuArray') || ~use_gpu
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return
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end
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array = gpuArray(array);
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end
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