How to set all one gpuArray in mex?

3 次查看（过去 30 天）
wei zhang
wei zhang 2021-2-16
回答： Edric Ellis 2021-2-16
Hi,
I need to set a all-one double gpuArray. I think I could use mxGPUCreateGPUArray to initial it. But it seems mxGPUCreateGPUArray could only initial a all-zero array like below.
mxGPUArray *x = mxGPUCreateGPUArray(ndim, dims, mxDOUBLE_CLASS, mxREAL, MX_GPU_INITIALIZE_VALUES);
Is there any good way to do this? Do I need to write a kernel function to do it with cuda function? Thank you.

请先登录，再回答此问题。

采纳的回答

Edric Ellis
Edric Ellis 2021-2-16
You basically have two options: either create and uninitialized mxGPUArray and fill the values using CUDA code (either a kernel, or one of the cuMemset* variants if your data type is small enough), or pass in to your MEX function an array of ones that you create in MATLAB using ones(...,'gpuArray').

更多回答（0 个）

类别

在 Help Center 和 File Exchange 中查找有关 GPU CUDA and MEX Programming 的更多信息

标签

产品


版本

R2020b

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!

Translated by