Names map and input are exchanged mistakenly. By sense of Preconditions paragraph they have to be exchanged I suppose, because there is no problem when map and result coincide (in current context).

The marker no_bad_cuml_array_check was necessary in 0.16 to avoid asserting on bad uses of CumlArray in specific tests. As of 0.17, this is no longer necessary.

This marker should be removed from pytest.ini as well as any tests that used it. A quick search shows this is used in 2 tests in test_incrementa_pca.py

Segmented reduce uses the same template type OffsetIteratorT for begin and end offsets

static CUB_RUNTIME_FUNCTION cudaError_t cub::DeviceSegmentedReduce::Sum
    (   void *              d_temp_storage,
        size_t &            temp_storage_bytes,
        InputIteratorT      d_in,
        OutputIteratorT     d_out,
        int                 num_segments,
        OffsetIterato