Segmentation Fault mxnetMTCNN on RAspberrypi

1

Hi,

I tryo to run mtcnn mxnet on the Raspberry pi with below part of code .

PredictorHandle MxNetMtcnn::LoadMxNetModule(const std::string& param_file, const std::string& json_file,
int batch, int channel, int input_h, int input_w)

{
std::cout << “MxNetMtcnn::LoadMxNetModule …” << std::endl;
int64 start = cv::getTickCount();
std::vector param_buffer;
std::vector json_buffer;
PredictorHandle pred_hnd;

if (LoadFile(param_file, param_buffer)<0)
	return nullptr;

if (LoadFile(json_file, json_buffer)<0)
	return nullptr;

int device_type = 1;
int dev_id = 0;
mx_uint  num_input_nodes = 1;
const char * input_keys[1];
const mx_uint input_shape_indptr[] = { 0, 4 };
const mx_uint input_shape_data[] = {
	static_cast<mx_uint>(batch),
	static_cast<mx_uint>(channel),
	static_cast<mx_uint>(input_h),
	static_cast<mx_uint>(input_w)
};

std::cout << "111  --  MxNetMtcnn::LoadMxNetModule ..........." << std::endl;

input_keys[0] = "data";

MXPredCreate(json_buffer.data(),
	param_buffer.data(),
	param_buffer.size(),
	device_type,
	dev_id,
	num_input_nodes,
	input_keys,
	input_shape_indptr,
	input_shape_data,
	&pred_hnd
);

	std::cout << "222222 --  MxNetMtcnn::LoadMxNetModule ..........." << std::endl;

MXPredCreate . part gives below error:

111 – MxNetMtcnn::LoadMxNetModule …
[11:42:05] src/nnvm/legacy_json_util.cc:209: Loading symbol saved by previous version v0.8.0. Attempting to upgrade…

Segmentation fault: 11

Stack trace returned 3 entries:
[bt] (0) ./main(dmlc::StackTraceabi:cxx11+0x38) [0x397b0]
[bt] (1) /home/pi/Projects/incubator-mxnet/lib/libmxnet.so(+0x2eb70e0) [0x76cd00e0]
[bt] (2) /lib/arm-linux-gnueabihf/libc.so.6(__default_sa_restorer+0) [0x7141e6b0]

same code working on my laptop.

any idea ?

2

Which MXNet version are you using? According to the error message it seems that there is a mismatch between the MXNet version that saved the model file and the one that is running on your Raspberry Pi.