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elias94's avatar
elias94
Icon for New Contributor rankNew Contributor
3 years ago

low occupancy of the DDR in HAN Pilot platform with opencl

I have a simple vectorized code with just 4 reads and 4 writes in the DDR with a clock frequency of 360 MHZ and i only achieve 10.6% occupancy for the read with a bandwidth of 612MB/s and the same f...
BoonBengT_Altera's avatar
BoonBengT_Altera
Icon for Moderator rankModerator
3 years ago

Hi @elias94,


Thank you for posting in Intel community forum and hope all is well.

My guess is that some operation/load are not regularly accessed by the work item.

Would suggest to use the profiler to check if there a stall and how is the occupancy doing for your code.


Guide to achieve and explanation of no stalling and high occupancy can be found below:

- https://www.intel.com/content/www/us/en/docs/programmable/683521/22-1/low-occupancy-percentage.html

Hope that clear some doubts.


Best Wishes

BB