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OpenACC Profiling Quiz

Question 1

What does setting export NVCOMPILER_ACC_TIME=16 enable during profiling?

  • A) Kernel launches
  • B) Data transfers
  • C) Device memory allocation and deallocation
  • D) Region entry/exit information

Answer: C) Device memory allocation and deallocation

Question 2

Which of the following statements is correct about OpenACC profiling using the command line?

  • A) Setting NVCOMPILER_ACC_NOTIFY=3 provides information about kernel launches and synchronization wait times.
  • B) Setting NVCOMPILER_ACC_TIME=4 provides region entry/exit information.
  • C) NVCOMPILER_ACC_NOTIFY=3 provides kernel execution and data transfer information.
  • D) NVCOMPILER_ACC_TIME=2 provides memory allocation details.

Answer: C) NVCOMPILER_ACC_NOTIFY=3 provides kernel execution and data transfer information.

Question 3 (True/False)

True or False: The NVIDIA HPC SDK Visual Profiler allows multiple timelines to be opened simultaneously in different tabs for OpenACC profiling.

Answer: True

Question 4 (True/False)

True or False: The command nsys profile -o timeline ./a.out generates a GUI-friendly report that can only be opened using nsys-ui.

Answer: True

Question 5

Which modules are required to enable GUI profiling tools on MeluXina?

  • A) NVHPC/22.7, CUDA/11.7.0, Mesa/22.0.3-GCCcore-11.3.0, Qt5/5.15.5-GCCcore-11.3.0
  • B) NVHPC/22.7, OpenACC/22.7, Mesa/22.0.3-GCCcore-11.3.0, Qt6/6.2.5-GCCcore-11.3.0
  • C) CUDA/11.7.0, NVHPC/22.7, OpenMP/4.5.0
  • D) Mesa/22.0.3, CUDA/11.7.0, OpenACC/5.0

Answer: A) NVHPC/22.7, CUDA/11.7.0, Mesa/22.0.3-GCCcore-11.3.0, Qt5/5.15.5-GCCcore-11.3.0