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QUDA Debugging
QUDA supports address and undefined sanitizers to aid in finding subtle, difficult to find memory bugs. To enable the use of sanitizers, ensure that you build with g++ or clang++, and set -DCMAKE_BUILD_TYPE=SANITIZE. This will build QUDA with both the address and undefined sanitizers enabled (-fsanitize=address,undefined).
Due to conflicts with running the CUDA driver with address sanitizer, it is necessary to set the run-time environment variable ASAN_OPTIONS="protect_shadow_gap=0" when running. Memory leak checking can be disable if desired with detect_leaks=0 (default is enabled).
To run with maximum checking enabled use
ASAN_OPTIONS=protect_shadow_gap=0,strict_string_checks=1:detect_stack_use_after_return=1:check_initialization_order=1:strict_init_order=1
The use of these run-time sanitizers has been critical in finding bugs in QUDA, and should be complimentary to running with valgrind (but not at the same time).