Troubleshooting

This page covers the following topics:

• Running out of GPU memory
• Instability with MHD
• Check static arrays with AddressSanitizer (ASan))

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• Running out of GPU memory

  • Description:

  ERROR : CUDA ERROR : out of memory !!
  

  • Solution: Reduce GPU_NSTREAM until the issue is resolved.

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• Instability with MHD

  • Description: See this issue report.
  • Solution: Update CUDA to 11.3 or higher.

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• Check static arrays with AddressSanitizer (ASan)

  • Description: Detect incorrect usage of static arrays.

  • Steps:

    1. Use the g++ compiler.
    2. Compile and link with flags -fsanitize=undefined -fsanitize=address.

  • Example (on the eureka machine)

    1. Uncomment the following lines in configs/eureka_gnu.config

       #CXXFLAG -fsanitize=undefined -fsanitize=address
       #LIBFLAG -fsanitize=undefined -fsanitize=address
       

    2. Generate Makefile

       python configure.py --machine=eureka_gnu [--your_other_arguments]
       

    3. Compile

       make clean && make -j4
       

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