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python3でcv2をimportすると crashしてコアーダンプ。
問題の解決：export OPENBLAS_CORETYPE=ARMV8
こちらを参照して解決。Jetson NanoのPython3環境でIllegal instruction (cpre dumped)
処理速度の比較測定：約３倍
$ sudo nvpmodel -m 0
$ sudo jetson_clocks
$ python3 opencv_cuda.py
CPU = 2.7655137538909913[msec]
GPU = 1.0501614570617677[msec]
1
$ python3 opencv_cuda.py
CPU = 2.7816075325012206[msec]
GPU = 0.9869620561599731[msec]
1opencv_cuda.py
import sys
import time
import cv2
### VALUES
NUM_REPEAT = 10000
### Read source image
img_src = cv2.imread("resource/lena.jpg")
cv2.imshow('img_src', img_src)
### Run with CPU
time_start = time.time()
for i in range (NUM_REPEAT):
img_dst = cv2.resize(img_src, (300, 300))
time_end = time.time()
print ("CPU = {0}".format((time_end - time_start) * 1000 / NUM_REPEAT) + "[msec]")
cv2.imshow('CPU', img_dst)
### Run with GPU
img_gpu_src = cv2.cuda_GpuMat() # Allocate device memory only once, as memory allocation seems to take time...
img_gpu_dst = cv2.cuda_GpuMat()
time_start = time.time()
for i in range (NUM_REPEAT):
img_gpu_src.upload(img_src)
img_gpu_dst = cv2.cuda.resize(img_gpu_src, (300, 300))
img_dst = img_gpu_dst.download()
time_end = time.time()
print ("GPU = {0}".format((time_end - time_start) * 1000 / NUM_REPEAT) + "[msec]")
cv2.imshow('GPU', img_dst)
key = cv2.waitKey(0)
cv2.destroyAllWindows()
print(cv2.cuda.getCudaEnabledDeviceCount())cudaで利用できる機能を表示してみる
import cv2
cv2.__version__
dir(cv2.cuda)['ALPHA_ATOP', 'ALPHA_ATOP_PREMUL', 'ALPHA_IN', 'ALPHA_IN_PREMUL', 'ALPHA_OUT', 'ALPHA_OUT_PREMUL', 'ALPHA_OVER', 'ALPHA_OVER_PREMUL', 'ALPHA_PLUS', 'ALPHA_PLUS_PREMUL', 'ALPHA_PREMUL', 'ALPHA_XOR', 'ALPHA_XOR_PREMUL', 'BroxOpticalFlow_create', 'COLOR_BAYER_BG2BGR_MHT', 'COLOR_BAYER_BG2GRAY_MHT', 'COLOR_BAYER_BG2RGB_MHT', 'COLOR_BAYER_GB2BGR_MHT', 'COLOR_BAYER_GB2GRAY_MHT', 'COLOR_BAYER_GB2RGB_MHT', 'COLOR_BAYER_GR2BGR_MHT', 'COLOR_BAYER_GR2GRAY_MHT', 'COLOR_BAYER_GR2RGB_MHT', 'COLOR_BAYER_RG2BGR_MHT', 'COLOR_BAYER_RG2GRAY_MHT', 'COLOR_BAYER_RG2RGB_MHT', 'COLOR_BayerBG2BGR_MHT', 'COLOR_BayerBG2GRAY_MHT', 'COLOR_BayerBG2RGB_MHT', 'COLOR_BayerGB2BGR_MHT', 'COLOR_BayerGB2GRAY_MHT', 'COLOR_BayerGB2RGB_MHT', 'COLOR_BayerGR2BGR_MHT', 'COLOR_BayerGR2GRAY_MHT', 'COLOR_BayerGR2RGB_MHT', 'COLOR_BayerRG2BGR_MHT', 'COLOR_BayerRG2GRAY_MHT', 'COLOR_BayerRG2RGB_MHT', 'CascadeClassifier_create', 'DEVICE_INFO_COMPUTE_MODE_DEFAULT', 'DEVICE_INFO_COMPUTE_MODE_EXCLUSIVE', 'DEVICE_INFO_COMPUTE_MODE_EXCLUSIVE_PROCESS', 'DEVICE_INFO_COMPUTE_MODE_PROHIBITED', 'DYNAMIC_PARALLELISM', 'DensePyrLKOpticalFlow_create', 'DescriptorMatcher_createBFMatcher', 'DeviceInfo_ComputeModeDefault', 'DeviceInfo_ComputeModeExclusive', 'DeviceInfo_ComputeModeExclusiveProcess', 'DeviceInfo_ComputeModeProhibited', 'EVENT_BLOCKING_SYNC', 'EVENT_DEFAULT', 'EVENT_DISABLE_TIMING', 'EVENT_INTERPROCESS', 'Event_BLOCKING_SYNC', 'Event_DEFAULT', 'Event_DISABLE_TIMING', 'Event_INTERPROCESS', 'Event_elapsedTime', 'FEATURE_SET_COMPUTE_10', 'FEATURE_SET_COMPUTE_11', 'FEATURE_SET_COMPUTE_12', 'FEATURE_SET_COMPUTE_13', 'FEATURE_SET_COMPUTE_20', 'FEATURE_SET_COMPUTE_21', 'FEATURE_SET_COMPUTE_30', 'FEATURE_SET_COMPUTE_32', 'FEATURE_SET_COMPUTE_35', 'FEATURE_SET_COMPUTE_50', 'FarnebackOpticalFlow_create', 'FastFeatureDetector_create', 'GLOBAL_ATOMICS', 'GpuMat_defaultAllocator', 'GpuMat_setDefaultAllocator', 'HOG_create', 'HOST_MEM_PAGE_LOCKED', 'HOST_MEM_SHARED', 'HOST_MEM_WRITE_COMBINED', 'HostMem_PAGE_LOCKED', 'HostMem_SHARED', 'HostMem_WRITE_COMBINED', 'NATIVE_DOUBLE', 'NVIDIA_OPTICAL_FLOW_1_0_NV_OF_PERF_LEVEL_FAST', 'NVIDIA_OPTICAL_FLOW_1_0_NV_OF_PERF_LEVEL_MAX', 'NVIDIA_OPTICAL_FLOW_1_0_NV_OF_PERF_LEVEL_MEDIUM', 'NVIDIA_OPTICAL_FLOW_1_0_NV_OF_PERF_LEVEL_SLOW', 'NVIDIA_OPTICAL_FLOW_1_0_NV_OF_PERF_LEVEL_UNDEFINED', 'NvidiaOpticalFlow_1_0_NV_OF_PERF_LEVEL_FAST', 'NvidiaOpticalFlow_1_0_NV_OF_PERF_LEVEL_MAX', 'NvidiaOpticalFlow_1_0_NV_OF_PERF_LEVEL_MEDIUM', 'NvidiaOpticalFlow_1_0_NV_OF_PERF_LEVEL_SLOW', 'NvidiaOpticalFlow_1_0_NV_OF_PERF_LEVEL_UNDEFINED', 'NvidiaOpticalFlow_1_0_create', 'ORB_create', 'OpticalFlowDual_TVL1_create', 'SHARED_ATOMICS', 'SURF_CUDA_ANGLE_ROW', 'SURF_CUDA_HESSIAN_ROW', 'SURF_CUDA_LAPLACIAN_ROW', 'SURF_CUDA_OCTAVE_ROW', 'SURF_CUDA_ROWS_COUNT', 'SURF_CUDA_SIZE_ROW', 'SURF_CUDA_X_ROW', 'SURF_CUDA_Y_ROW', 'SparsePyrLKOpticalFlow_create', 'StereoBeliefPropagation_estimateRecommendedParams', 'StereoConstantSpaceBP_estimateRecommendedParams', 'Stream_Null', 'TargetArchs_has', 'TargetArchs_hasBin', 'TargetArchs_hasEqualOrGreater', 'TargetArchs_hasEqualOrGreaterBin', 'TargetArchs_hasEqualOrGreaterPtx', 'TargetArchs_hasEqualOrLessPtx', 'TargetArchs_hasPtx', 'WARP_SHUFFLE_FUNCTIONS', '__doc__', '__loader__', '__name__', '__package__', '__spec__', 'abs', 'absSum', 'absdiff', 'add', 'addWeighted', 'alphaComp', 'bilateralFilter', 'bitwise_and', 'bitwise_not', 'bitwise_or', 'bitwise_xor', 'blendLinear', 'buildWarpAffineMaps', 'buildWarpPerspectiveMaps', 'calcAbsSum', 'calcHist', 'calcNorm', 'calcNormDiff', 'calcSqrSum', 'calcSum', 'cartToPolar', 'compare', 'copyMakeBorder', 'countNonZero', 'createBackgroundSubtractorMOG', 'createBackgroundSubtractorMOG2', 'createBoxFilter', 'createBoxMaxFilter', 'createBoxMinFilter', 'createCLAHE', 'createCannyEdgeDetector', 'createColumnSumFilter', 'createContinuous', 'createConvolution', 'createDFT', 'createDerivFilter', 'createDisparityBilateralFilter', 'createGaussianFilter', 'createGeneralizedHoughBallard', 'createGeneralizedHoughGuil', 'createGoodFeaturesToTrackDetector', 'createHarrisCorner', 'createHoughCirclesDetector', 'createHoughLinesDetector', 'createHoughSegmentDetector', 'createLaplacianFilter', 'createLinearFilter', 'createLookUpTable', 'createMedianFilter', 'createMinEigenValCorner', 'createMorphologyFilter', 'createRowSumFilter', 'createScharrFilter', 'createSeparableLinearFilter', 'createSobelFilter', 'createStereoBM', 'createStereoBeliefPropagation', 'createStereoConstantSpaceBP', 'createTemplateMatching', 'cvtColor', 'demosaicing', 'dft', 'divide', 'drawColorDisp', 'ensureSizeIsEnough', 'equalizeHist', 'evenLevels', 'exp', 'findMinMax', 'findMinMaxLoc', 'flip', 'gammaCorrection', 'gemm', 'getCudaEnabledDeviceCount', 'getDevice', 'histEven', 'histRange', 'integral', 'log', 'magnitude', 'magnitudeSqr', 'max', 'meanShiftFiltering', 'meanShiftProc', 'meanShiftSegmentation', 'meanStdDev', 'merge', 'min', 'minMax', 'minMaxLoc', 'mulAndScaleSpectrums', 'mulSpectrums', 'multiply', 'norm', 'normalize', 'phase', 'polarToCart', 'pow', 'printCudaDeviceInfo', 'printShortCudaDeviceInfo', 'pyrDown', 'pyrUp', 'rectStdDev', 'reduce', 'registerPageLocked', 'remap', 'reprojectImageTo3D', 'resetDevice', 'resize', 'rotate', 'setBufferPoolConfig', 'setBufferPoolUsage', 'setDevice', 'split', 'sqr', 'sqrIntegral', 'sqrSum', 'sqrt', 'subtract', 'sum', 'threshold', 'transpose', 'unregisterPageLocked', 'warpAffine', 'warpPerspective']