Segmentation fault after test_jpeg on a caffè converted and compiled model on dpu

[lorenzobattelli]

Dear all,
I followed this tutorial about converting a darknet trained model to a quantized model, but while trying to run the test_jpeg command into the dir /usr/share/vitis_ai_library/samples/yolov4/ , it comes to a segmentation fault, we guess it is a matter of prototxt (?). If so is there any way to generete it ?

thank you
My best regards

[chumingqian]

Hi, @lorenzobattelli :
Your target device system is Pynq-dpu1.2 or Pynq-dpu1.3 ?
Can you paste a picture or log about the error information.
Besides, before you convert the darknet model to caffe model, did you make a copy for your original "xxx.prototxt " file, and do the following modification on the copy " your_copy.prototxt" , then do the quantization step with your "modified.prototxt" file.

STEP2: MDOEL Quantization
*1.Before quantizing the model, we will need to make a minor modifcation to .prototxt file to point to the calibaration images. Make a new copy of the prototxt file and make the following edits:
name: "Darkent2Caffe"
#input: "data"
#input_dim: 1
#input_dim: 3
#input_dim: 416
#input_dim: 416

    ####Change input data layer to VOC validation images #####
    layer {
      name: "data"
      type: "ImageData"
      top: "data"
      top: "label"
      include {
        phase: TRAIN
      }
      transform_param {
        mirror: false
        yolo_height:416  #change height according to Darknet model
        yolo_width:416   #change width according to Darknet model
      }
      image_data_param {
        source: "voc/calib.txt"  #list of calibration imaages     
        root_folder: "images/" #path to calibartion images

        batch_size: 1
        shuffle: false
      }
    }
    #####No changes to the below layers##### 
	*2. Notice that the calibration images in file.txt, the .txt file needs to be a two column format to realize the quantization.(For the quantize calibration, the images without labels are enough, but to realize the quantization we need a two column format .txt file, one column is the image_id, the other column just set as the zero)

	*3. Notice that the path of the calibration images should under the Doker environment, meanwhile the  workspace can be regard as computer  and the vitis ai  regard as  a home:	

vai_q_caffe quantize -model ../dpu1.3.2_caffe_model/v4_leacky_quanti.prototxt  -keep_fixed_neuron -calib_iter 3 -weights ../dpu1.3.2_caffe_model/v4_leacky.caffemodel -sigmoided_layers layer133-conv,layer144-conv,layer155-conv -output_dir ../dpu1.3.2_caffe_model/ -method 1 

STEP3:  MODEL  COMPILE 
vai_c_caffe --prototxt ../dpu1.3.2_caffe_model/original_model_quanti/deploy.prototxt --caffemodel ../dpu1.3.2_caffe_model/original_model_quanti/deploy.caffemodel --arch ./u96pynq_v2.json --output_dir ../dpu1.3.2_caffe_model/ --net_name dpu1-3-2_v4_voc --options "{'mode':'normal','save_kernel':''}";

[lorenzobattelli]

Thank you for your fast feedback, first of all.

1. our board is Xilinx Zynq Ultrascale+ MPSoC DPUCZDX8G_ISA0_B4096_MAX_BG2, we're working with cpp as tutorial does
2. the error message is simply Segmentation fault after running the command ./test_jpeg_yolov4 onto our board
3. yes, I used my voc/yolov4.prototxt generated from the script bash script/darknet_convert.sh
   that I run into the docker, as first step of the conversion process. Then I edited this file by adding those instructions at the top of the file, as you shown me.

Greetings!