Question about failing to save an image (Normal situation)

[lasiyan]

[Environment]

• Jetson Orin AGX (Jetpack 5.0.1) GCC 9.4.0 (stdc++ 17)

[Question]

The simple code below should work fine when running in debugging mode using gdb.

But strangely, when I run it directly from the terminal (e.g. ./myAPP), I get failed on saveImage.

Have you experienced similar symptoms?

I suspected a synchronization problem and added cudaDeviceSynchronize right after loadImage and saveImage, but it doesn't improve.

void run()
{
  Log::SetLevel(Log::Level::DEBUG);

  uchar3* img;
  int w, h;
  if (!loadImage("test.jpg", &img, &w, &h)) {
    printf("loadImage fail\n");
  }
  CUDA(cudaDeviceSynchronize());

  printf("%02X %02X %02X\n", img->x, img->y, img->z);

  if (!saveImage("res_org.jpg", img, w, h)) {
    printf("saveImage fail\n");
  }
  CUDA(cudaDeviceSynchronize());
  CUDA(cudaFreeHost(img));
}

Below are the results of the run. Is there a way to view the verbose log instead of SetLevel?

[image]  loaded 'test.jpg'  (1920x1080, 3 channels)
[cuda]   cudaAllocMapped 6220800 bytes, CPU 0x203d8e000 GPU 0x203d8e000
24 26 21
[image]  failed to save 1920x1080 image to 'res_org.jpg'
saveImage fail

I referenced this article. I'm new to CUDA, so please bear with me.

[dusty-nv]

Hi @lasiyan, here is the code to saveImage()

jetson-utils/image/imageIO.cpp

Line 250 in f0bff5c

bool saveImage( const char* filename, void* ptr, int width, int height, imageFormat format, int quality, const float2& pixel_range, bool sync )

in this case, it checks the result from stbi_write_jpg() 3rd-party library function, and I'm not sure why that would work ok normally but fail under GDB