Thanks. With engine set preparation, calibration, and conversion of the model work fine. But evaluation triggers errors like: Error in QNNPACK: failed to create convolution with 0.1966128 input scale, 1.698165 kernel scale, and 0.2075303 output scale: convolution scale 1.608829 is greater or equal to 1.0. The cause seems to be in the SE block implemented via 1x1 convolution that receives 1x1 input. I probably should have used Linear anyway, but maybe it will be useful to someone.