Pinned memory allocation returns odd size #3625
Description
It looks like CuPy allocates more bytes than expected when calling cupy.cuda.alloc_pinned_memory. Any ideas why that might be?
In [1]: import numpy
...: import cupy
In [2]: a = cupy.arange(1_000_000)
In [3]: b = numpy.asarray(cupy.cuda.alloc_pinned_memory(a.nbytes)).view(a.dtype)
...:
In [4]: b.nbytes
Out[4]: 8388608
In [5]: a.nbytes
Out[5]: 8000000- Conditions (you can just paste the output of
python -c 'import cupy; cupy.show_config()')- CuPy version: 7.6.0
- OS/Platform: Ubuntu 18.04.4 LTS
- CUDA version: 10.2
- cuDNN/NCCL version (if applicable): 7.6.5/2.5.7.1
CuPy Version : 7.6.0
CUDA Root : /datasets/jkirkham/miniconda/envs/rapids15dev
CUDA Build Version : 10020
CUDA Driver Version : 10020
CUDA Runtime Version : 10020
cuBLAS Version : 10202
cuFFT Version : 10102
cuRAND Version : 10102
cuSOLVER Version : (10, 3, 0)
cuSPARSE Version : 10301
NVRTC Version : (10, 2)
cuDNN Build Version : 7605
cuDNN Version : 7605
NCCL Build Version : 2406
NCCL Runtime Version : 2507
CUB Version : None
cuTENSOR Version : None