小编Md *_*ari的帖子

我想将 cuDF 数据帧转换为 cupy ndarray。我正在使用下面的代码：

import time
import numpy as np
import cupy as cp
import cudf
from numba import cuda
df = cudf.read_csv('titanic.csv')
arr_cupy = cp.fromDlpack(df.to_dlpack())

输出：

---------------------------------------------------------------------------
ValueError                                Traceback (most recent call last)
<ipython-input-176-0d6ff9785189> in <module>
----> 1 arr_cupy = cp.fromDlpack(df.to_dlpack())

~/.conda/envs/rapids_013/lib/python3.7/site-packages/cudf/core/dataframe.py in to_dlpack(self)
   3821         import cudf.io.dlpack as dlpack
   3822 
-> 3823         return dlpack.to_dlpack(self)
   3824 
   3825     @ioutils.doc_to_csv()

~/.conda/envs/rapids_013/lib/python3.7/site-packages/cudf/io/dlpack.py in to_dlpack(cudf_obj)
     72         )
     73 
---> 74     return libdlpack.to_dlpack(gdf_cols)

cudf/_libxx/dlpack.pyx in cudf._libxx.dlpack.to_dlpack()

ValueError: Cannot create a DLPack tensor with null …