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A comment on AMD and ARM's new CPU/GPU virtual ISA. Parent comment

Re:AMD and ARM's new CPU/GPU virtual ISA by jgmatpdx on Wednesday June 22, 2011 @08:01PM (#2686001)
Even NVIDIA isn't crazy enough to try to get everyone to use the same ISA again; they're trying to get you to buy into their compiler chain, not into the architecture of a particular generation of GPU.
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Re:AMD and ARM's new CPU/GPU virtual ISA by nivertech on Wednesday June 22, 2011 @09:09PM (#2686184)
Is PTX really ISA? It's also virtual, but very limited ... Unlike PTX, FSAIL will work on both CPUs and GPUs and even will allow system calls from discrete GPUs.
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Re:AMD and ARM's new CPU/GPU virtual ISA by jgmatpdx on Thursday June 23, 2011 @01:19PM (#2688757)
PTX seems quite reasonable to me, but I don't think it's really intended to be a programmer-facing abstraction. NVIDIA wants you to target CUDA, and they'll (try to) ensure that CUDA has sufficient performance advantages to make it worth your while to do so.
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