AM5728 DSP opencl加速失败

user5875077

Other Parts Discussed in Thread: AM5728

platform: AM5728

sdk 5.2

按照http://processors.wiki.ti.com/index.php/OpenCV 文档来测试opencv&opencl,

运行结果失败 export TI_OCL_LOAD_KERNELS_ONCHIP=Y

 export TI_OCL_CACHE_KERNELS=Y
 export OPENCV_OPENCL_DEVICE='TI AM57:ACCELERATOR:TI Multicore C66 DSP'
 echo "OpenCL on, canny"
 ./canny_ex1

时提示sh: clocl: command not found
Segmentation fault(core dump)

6 年多前

0 yongqing wang 6 年多前

Guru 27460 points

g++ -I/usr/local/include/opencv -I/usr/local/include/opencv2 -L/usr/local/lib/ -g -o canny_ex1 canny_ex1.cpp -lrt -lopencv_core -lopencv_imgproc -lopencv_video -lopencv_features2d -lopencv_imgcodecs这一串命令有输全吗？

在/usr目录下看看能不能找到clocl

0 user5875077 6 年多前回复 yongqing wang

Intellectual 940 points

谢谢，昨晚证实了是/usr/bin下没有这个文件导致的，现在把bin文件补全了可以运行了，但是运行 ./canny_ex1 log提示每个函数要几千毫秒，这个是什么原因

0 Shine 6 年多前回复 user5875077

TI__Guru**** 357097 points

Please note that the first run, with OpenCL on, has additional delay of ~1min, due to kernel compilation on AM57xx. This is constrained to first run only, if "TI_OCL_CACHE_KERNELS" environemnt variable is set. Profiling shows different execution time for DSP (OpenCL on) and A15 (OpenCL off) platforms.

0 user5875077 6 年多前回复 Shine

Intellectual 940 points

是的，TI_OCL_CACHE_KERNELS=y后时间降下来了，和文档测试结果一样了

0 yongqing wang 6 年多前回复 user5875077

Guru 27460 points

感谢分享

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AM5728 DSP opencl加速失败