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The `top_k` expression can be used as a reduction on primitive types, but is often used alongside group_by and will return a nested type.
```python
import polars as pl
from functools import parti…
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We can't currently do a read + length/count operation on a parquet file.
```python
import polars as pl
from functools import partial
from cudf_polars.callback import execute_with_cudf
import nu…
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### Steps to reproduce
1. Create a fresh RAPIDS conda environment `conda create -n rapids-22.06 -c rapidsai -c nvidia -c conda-forge rapids=22.06 python=3.8 cudatoolkit=11.5`
2. `conda activate r…
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**Is your feature request related to a problem? Please describe.**
Currently pylibcudf exposes [a subset of the factories in libcudf](https://github.com/rapidsai/cudf/blob/branch-24.12/python/pylibcud…
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### Description
Observed this issue with versions 9.5 and 12.0. On my system (Debian Linux 11.6)
UTF-8 is the default encoding. I've encountered the change of encoding in other situations converting…
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**Problem**
To enable full gpu data science it would be really useful to consider using dask-cudf for data frames larger than single gpu memory or cudf for data frames that can fit entirely on a sing…
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The anonymous space in the first file has a structure valid_ table_ filter：
```c++
namespace {
// Returns true if the mask is true for index i in at least keep_threshold
// columns
struct valid…
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I am trying to be able to run this anonymized script using cuDF or cuDF.pandas with GPU acceleration.
currently runs for over 5 hours for 2Million rows of data.
```python
import pandas as pd
from rap…
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At first, I see this article: [GPU-Accelerated JSON Data Processing with RAPIDS](https://developer.nvidia.com/blog/gpu-accelerated-json-data-processing-with-rapids/)
I follow it to use the cudf.read_…
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In polars converting from string to integer (say) and vice versa is accomplished in an expression by `cast`ing between types. For example `pl.col("a").cast(pl.String)`.
In libcudf, this is possible…