How to resolve warning message about broadcast variable while using ‘parfor’?
males = {‘animal1’, ‘animal2’, ‘animal3’};
treatmentGrps = {‘T1’, ‘T2’, ‘T3’};
nrows = size(featureLists, 1);
ncols = size(featureLists, 2);
featureLists = cell(nrows, ncols);
parfor grp = 1:nrows
tempRow = cell(1, ncols);
for animal = 1:ncols
tempRow{animal} = individualPsychValuesPerSession(‘approachavoid’, …
treatmentGrps{grp}, males{animal});
end
featureLists(grp, 🙂 = tempRow;
end
When I use ‘parfor’ like above I get an warning message
The entire array or structure ‘males’ is a broadcast variable.
This might result in unnecessary communication overhead.
But, when I change ‘ncols’ to ‘numel(males)’ like following
for animal = 1:numel(males)
tempRow{animal} = individualPsychValuesPerSession(‘approachavoid’, …
treatmentGrps{grp}, males{animal});
end
for the inner loop I don’t get any warning.
Can someone please explain this behavior of ‘parfor’?males = {‘animal1’, ‘animal2’, ‘animal3’};
treatmentGrps = {‘T1’, ‘T2’, ‘T3’};
nrows = size(featureLists, 1);
ncols = size(featureLists, 2);
featureLists = cell(nrows, ncols);
parfor grp = 1:nrows
tempRow = cell(1, ncols);
for animal = 1:ncols
tempRow{animal} = individualPsychValuesPerSession(‘approachavoid’, …
treatmentGrps{grp}, males{animal});
end
featureLists(grp, 🙂 = tempRow;
end
When I use ‘parfor’ like above I get an warning message
The entire array or structure ‘males’ is a broadcast variable.
This might result in unnecessary communication overhead.
But, when I change ‘ncols’ to ‘numel(males)’ like following
for animal = 1:numel(males)
tempRow{animal} = individualPsychValuesPerSession(‘approachavoid’, …
treatmentGrps{grp}, males{animal});
end
for the inner loop I don’t get any warning.
Can someone please explain this behavior of ‘parfor’? males = {‘animal1’, ‘animal2’, ‘animal3’};
treatmentGrps = {‘T1’, ‘T2’, ‘T3’};
nrows = size(featureLists, 1);
ncols = size(featureLists, 2);
featureLists = cell(nrows, ncols);
parfor grp = 1:nrows
tempRow = cell(1, ncols);
for animal = 1:ncols
tempRow{animal} = individualPsychValuesPerSession(‘approachavoid’, …
treatmentGrps{grp}, males{animal});
end
featureLists(grp, 🙂 = tempRow;
end
When I use ‘parfor’ like above I get an warning message
The entire array or structure ‘males’ is a broadcast variable.
This might result in unnecessary communication overhead.
But, when I change ‘ncols’ to ‘numel(males)’ like following
for animal = 1:numel(males)
tempRow{animal} = individualPsychValuesPerSession(‘approachavoid’, …
treatmentGrps{grp}, males{animal});
end
for the inner loop I don’t get any warning.
Can someone please explain this behavior of ‘parfor’? parfor, matlab MATLAB Answers — New Questions
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