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Yes, Tegra 2 is missing NEON. I can't comprehend why people still release CPUs intended for any kind of performance yet omit the SIMD engine -- my suspicion is
by DarkShikari 16y ago
Yes, Tegra 2 is missing NEON. I can't comprehend why people still release CPUs intended for any kind of performance yet omit the SIMD engine -- my suspicion is nVidia is trying to encourage developers to use their GPU APIs instead by crippling the ability of the CPU to do number crunching.
I highly doubt it's an overly significant power or die size issue -- with the amount they're already spending on L1 cache, L2 cache, and so forth, it seems dumb to omit the kind of powerful ALU necessary to make use of it all.
- pmjordan 16y agoIs there a GPGPU API available on typical Tegra2 devices? OpenCL, CUDA? Without that, using the GPU for number crunching basically isn't going to happen.
- rsynnott 16y agoTegra 2 doesn't support OpenCL or CUDA, though Tegra 3 will. The PowerVR SGX543 supports OpenCL, though not, of course, CUDA. EDIT: At the time, NVidia claimed that it _was_ a die size limitation.