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core(ocl): add parameter to limit device max workgroup size

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used by OpenCV
This commit is contained in:
Alexander Alekhin 2018-12-17 18:31:49 +00:00
parent 55171b25f8
commit d9d9b05912
1 changed files with 8 additions and 0 deletions
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8
modules/core/src/ocl.cpp
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@ -1257,6 +1257,14 @@ struct Device::Impl
else
vendorID_ = UNKNOWN_VENDOR;
const size_t CV_OPENCL_DEVICE_MAX_WORK_GROUP_SIZE = utils::getConfigurationParameterSizeT("OPENCV_OPENCL_DEVICE_MAX_WORK_GROUP_SIZE", 0);
if (CV_OPENCL_DEVICE_MAX_WORK_GROUP_SIZE > 0)
{
const size_t new_maxWorkGroupSize = std::min(maxWorkGroupSize_, CV_OPENCL_DEVICE_MAX_WORK_GROUP_SIZE);
if (new_maxWorkGroupSize != maxWorkGroupSize_)
CV_LOG_WARNING(NULL, "OpenCL: using workgroup size: " << new_maxWorkGroupSize << " (was " << maxWorkGroupSize_ << ")");
maxWorkGroupSize_ = new_maxWorkGroupSize;
}
#if 0
if (isExtensionSupported("cl_khr_spir"))
{