[PyCuda] Why are Function.lmem, Function.smem, and Function.registers deprecated?
lists at informa.tiker.net
Tue May 19 16:10:34 PDT 2009
On Dienstag 19 Mai 2009, Bryan Catanzaro wrote:
> I was browsing the documentation and saw the note that
> pycuda.driver.Function.registers, etc. are deprecated and will be
> removed in PyCuda 0.94. That makes me a little sad, as that
> information is very useful to one of the projects I'm working on. The
> implication in the documentation is that this is Cuda 2.2's fault.
> But I'm a little confused as to why - the .cubin files produced by my
> nvcc 2.2 compiler still have that information, so I must be missing
> something important here... What changed to make these useful
> attributes deprecated?
No, it's different--things are getting better, not worse! :)
CUDA 2.2 introduces an official API to find these values:
So, if you're running 0.93 against 2.2, you'll get a deprecation warning for
using .registers etc. The goal is to keep with the Zen of Python:
There should be one-- and preferably only one --obvious way to do it.
Since CUDA 2.2 brought us a second way, the first one gets deprecated. If this
meets enough resistance, I guess I could be convinced to keep .registers et al
around. I'd rather not though. On 2.2, all .registers does now is call the new
I've added a note to the docs about what the "new way" is.
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