53 points | by jxmorris12 6 days ago ago
2 comments
I was wondering why the author was using braced initialization like
size_t i{0};
size_t i = 0;
size_t i{0.0};
double d = 0.0; size_t i{d};
In C++, you can get the same effect without the unusual syntax by passing -Wfloat-conversion to gcc/clang, but not sure how to do that with CUDA:
Lei Mao's blog is such an amazing resource for GPU performance engineering. I am stunned by the sheer amount of insight he puts out on his blog.
I was wondering why the author was using braced initialization like
instead of the more common Apparently, braced initialization does not allow narrowing conversion, so you'd get a compiler error for e.g. casting double to float and a warning for which might silently overflow size_t otherwise, so this is a bit safer.In C++, you can get the same effect without the unusual syntax by passing -Wfloat-conversion to gcc/clang, but not sure how to do that with CUDA:
Lei Mao's blog is such an amazing resource for GPU performance engineering. I am stunned by the sheer amount of insight he puts out on his blog.