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Difference between rated peak performance and actual performance

Question asked by bdoshi on Apr 22, 2013
Latest reply on Apr 22, 2013 by himanshu.gautam

Hi

 

 

I am using laptop with RADEON HD-6290. Rated peak performance of gpu is 44 gflops (checked on wikipedia). When i am running OpenCL sample examples (provided by AMD) on gpu, it is giving performance of 5-6 G instructions. Why such a large difference between peak vs actual capacity.

 

Please find attached file for more detail.

 

2nd last column is instructions/sec (calculated as Total work item * ALU instructions * 1000 / time (ms)).

Last column is instructions/sec normalized to 100% ALU busy.

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