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high cpu usage on module libigdrcl

Hi,

After running some performance tests on VtuneAMP and VisiualStudio performance Analyzer, they both showed that the module libigdrcl took a lot of CPU usage.Is this module  the  opencl driver library? looks like every opencl enqueue  API will finally call this dynamic library.It is unnatural that this module will cost this much CPU. Vtune labeled 90% of this module's CPU time to status Poor, other 10% to status OK. 


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