Dear @huaihuacq,
You can not upgrade tensorrt alone as the TRT libs have dependency issues with other libs like CUDA. Please upgrade to latest Jetpack version and test.
@SivaRamaKrishnaNV
Do you know the inference result of resnet int8 no matter what input, output top5 are:
[1] wall clock
[2] switch
[3] tick
[4] black widow
[5] screw