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.
1719 Discussions

Running an OpenCL on Intel Xeon E5, and its port only on single thread (E5)

sai_rahul_c_
Beginner
‎05-15-2013 06:59 AM
254 Views

Hi,

I am running an application on Intel Xeon E5 using OpenCL SDK XE, and when I checked the system monitor to observe thread utilization it shows that most of the item only one thread is running at 100% and rest running at very low percentage. I am just wondering if we have to declare any specific parameter to make sure the application is mapped on all threads on a single processor. 

FYI: When I run second instance of algorithm in parallel I observe another thread being utilizing 100% so it meas the code is the limiting factor in mapping the kernel on multiple workitems and workgroups. I also declare large workgroup and workitem number in my application code. 

Thank you,
Sai. 

0 Kudos

Link Copied

0 Replies
Reply

Community support is provided during standard business hours (Monday to Friday 7AM - 5PM PST). 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.