On 11/16/13 22:22, Jeff Law wrote:
On 11/16/13 21:58, Alec Teal wrote:
Now while great, is this true!? Nvidia (IIRC, this was like a year ago
though) don't even give out the instruction set for their GPUs, can we
have GCC targeting closed things? Also there (must be and is) a Cuda
runtime, wouldn't we need an open runtime to link against?
The various projects looking at supporting OpenACC are, to the best of my
knowledge, targeting PTX, which is a virtual ISA from NVidia which is published.
Correct. PTX is a perfectly well defined architecture, albeit for a virtual
machine. The specification is public. IMHO this is no different to, say,
targeting Java byte code.
