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Altera_Forum's avatar
Altera_Forum
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12 years ago

Slowdown when increasing the number of compute units

Hi, I've recently started experimenting with increasing the number of compute units for a particular kernel. I've previously had some good results using manual vectorisation to reduce runtime....
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
12 years ago

Hi, for the 2 compute units, the global work item size to local work item size ratio should be 8, or larger, for example, 1024/128.