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Fix bug in blockRankedReduce #2226

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merged 5 commits into from
Mar 19, 2024
Merged

Fix bug in blockRankedReduce #2226

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b7af427
fix ranked reduction bug
akifcorduk Mar 14, 2024
bcfa9cd
use lower and upper bounds for generality
akifcorduk Mar 15, 2024
ffdbbdc
Merge branch 'branch-24.04' into fix_reduce_bug
akifcorduk Mar 15, 2024
1558c0e
Merge branch 'branch-24.04' into fix_reduce_bug
tfeher Mar 18, 2024
942023d
Merge branch 'branch-24.04' into fix_reduce_bug
tfeher Mar 18, 2024
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8 changes: 4 additions & 4 deletions cpp/include/raft/util/reduction.cuh
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Original file line number Diff line number Diff line change
Expand Up @@ -157,11 +157,11 @@ DI std::pair<T, i_t> blockRankedReduce(T val,
val = values[lane];
idx = indices[lane];
} else {
// get the min if it is a max op, get the max if it is a min op
val = reduce_op(std::numeric_limits<T>::min(), std::numeric_limits<T>::max()) ==
std::numeric_limits<T>::min()
// get the lowest if it is a max op, get the max if it is a lowest op
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val = reduce_op(std::numeric_limits<T>::lowest(), std::numeric_limits<T>::max()) ==
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std::numeric_limits<T>::lowest()
? std::numeric_limits<T>::max()
: std::numeric_limits<T>::min();
: std::numeric_limits<T>::lowest();
idx = -1;
}
__syncthreads();
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