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DeviceRunLengthEncode::Encode returns wrong results #127

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dumerrill opened this issue Feb 8, 2018 · 1 comment
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DeviceRunLengthEncode::Encode returns wrong results #127

dumerrill opened this issue Feb 8, 2018 · 1 comment

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@dumerrill
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The attached sample code compiled as
nvcc -std=c++11 -o cub_bug cub_bug.cu

with cub 1.7.4 results in incorrect count for the last element

Mismatching count for key 130882: 1 vs. 2

cub_bug.txt
dumerrill referenced this issue Feb 8, 2018
@dumerrill
Fix for Issue#127: (DeviceRunLengthEncode::Encode returns wrong results)
880c75c 
https://github.com/NVlabs/cub/issues/127 

Applied reduction-op instead of RLE-scan-op for last item, so was always
(insead of conditionally) folding in the last block's prefix count.
@dumerrill
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Fixed.

@kaatish kaatish mentioned this issue Apr 25, 2018
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@dumerrill