OpenCL* for CPU
Ask questions and share information on Intel® SDK for OpenCL™ Applications and OpenCL™ implementations for Intel® CPU.
Announcements
This forum covers OpenCL* for CPU only. OpenCL* for GPU questions can be asked in the GPU Compute Software forum. Intel® FPGA SDK for OpenCL™ questions can be ask in the FPGA Intel® High Level Design forum.
1722 Discussions

Reduction from NVidia SDK works on HD Graphics but don't work on Intel CPU

Vyacheslav_A_
Beginner
‎02-04-2014 10:09 PM
648 Views

I found that reduction algorithm from NVidia SDK works on HD Graphics 4400 but don't work on Intel CPU i5.
I've expected that Nvidia algorithm works everywhere OR work only on Nvidia hardware so that difference in behavior between CPU and GPU on SAME machine looks strange for me.

 

Reduction algorithm and C# + OpenCL.NET unit test are in attachments. Unit test fails on Intel CPU with size = 4.

What differences in kernel execution exists between CPU and GPU? How can I fix the problem?

Thank you!

ps. I can attach a sample VS 2012 project if it needs.

Preview file
3 KB
Preview file
2 KB
0 Kudos

Link Copied

1 Reply
Vyacheslav_A_
Beginner
‎02-05-2014 07:39 PM
648 Views

A duplicate topic. Topic with discussion.

0 Kudos
Copy link
Reply

Community support is provided Monday to Friday. Other contact methods are available here.

Intel does not verify all solutions, including but not limited to any file transfers that may appear in this community. Accordingly, Intel disclaims all express and implied warranties, including without limitation, the implied warranties of merchantability, fitness for a particular purpose, and non-infringement, as well as any warranty arising from course of performance, course of dealing, or usage in trade.

For more complete information about compiler optimizations, see our Optimization Notice.