> Also, code that compiles with older CUDA toolkit versions may not compile with newer CUDA toolkit versions. Newer hardware may require a CUDA toolkit version that is newer than what the project maintainer intended.
This is the part I find confusing, especially as NVIDIA doesn't make it easy to find and download the old toolkits. Is this effectively saying that just choosing the right --arch and --code flags isn't enough to support older versions? But that as it statically links in the runtime library (by default) that newer toolkits may produce code that just won't run on older drivers? In other words, is it true that to support old hardware you need to download and use old CUDA Toolkits, regardless of nvcc flags? (And to support newer hardware you may need to compile with newer toolkits).
This is the part I find confusing, especially as NVIDIA doesn't make it easy to find and download the old toolkits. Is this effectively saying that just choosing the right --arch and --code flags isn't enough to support older versions? But that as it statically links in the runtime library (by default) that newer toolkits may produce code that just won't run on older drivers? In other words, is it true that to support old hardware you need to download and use old CUDA Toolkits, regardless of nvcc flags? (And to support newer hardware you may need to compile with newer toolkits).
That's how I read it, which seems unfortunate.