decimal to binary conversion of gpuArray gives error

Question

Harish Maradana 2014-12-11

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https://ww2.mathworks.cn/matlabcentral/answers/166233-decimal-to-binary-conversion-of-gpuarray-gives-error

评论： Harish Maradana 2014-12-11

my code:

dc=60;
dc=gpuArray(dc);
s=dec2bin(dc);

when exicuting this code error:

[f,e]=log2(max(d)); % How many digits do we need to represent the numbers?
s=de2bi(dc)    % also gives error

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Geoff Hayes 2014-12-11

Harish - if errors are being generated, then please include them in your question. Copy and paste all of the red text (that corresponds to the error) into your question.

Harish Maradana 2014-12-11

[f,e]=log2(max(d)); % How many digits do we need to represent the numbers?

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Answer 1

Edric Ellis 2014-12-11

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https://ww2.mathworks.cn/matlabcentral/answers/166233-decimal-to-binary-conversion-of-gpuarray-gives-error#answer_162009

Unfortunately, as you have discovered, the gpuArray version of log2 doesn't support the second output argument as needed by dec2bin. One further problem is that dec2bin returns char data which is not supported on the GPU, so I think you might be better off simply gathering the GPU data before calling dec2bin.

Could I ask - are you calling dec2bin with a large amount of data?