feat/cuda: I1 - CUDA backend skeleton (probe+create/free real, 100 op stubs) - #20
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magiodev wants to merge 6 commits into
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feat/cuda: I1 - CUDA backend skeleton (probe+create/free real, 100 op stubs)#20magiodev wants to merge 6 commits into
magiodev wants to merge 6 commits into
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…l, 100 op stubs) - Add h3_cuda.cu: implements the existing plain-C h3_gpu.h API against CUDA/cuBLAS. h3_cuda_probe + h3_gpu_create/free/error real; all compute ops are stubs returning 'not yet implemented'. Metal backend (h3_gpu.m/h3_shaders.metal) preserved untouched. - Add h3_cuda.h (probe decl); h3.c probes via H3_CUDA guard. - Add h3_tokenizer.c C stub (Linux has no Foundation; Metal keeps h3_tokenizer.m). - h3_host.c: vImage high-quality scale guarded, portable bilinear fallback for CUDA build. - h3.c/h3_cli.c/h3_ffmpeg.c: Linux portability guards (st_mtimespec->st_mtim, arc4random_buf->getrandom, SSIZE_MAX define). - Makefile: cuda-spark/cuda-generic/cuda targets (nvcc + cuBLAS, .cuda.o objects, CUDA_ARCH=sm_121 for DGX Spark GB10), mirroring ds4's pattern.
…CK_MONOTONIC/strdup)
…urns cast to exact type
…removed prop.unifiedMemory)
…h in h3_cuda.cu nvcc compiles .cu as C++; without C linkage the GPU API symbols were mangled and the host C objects could not link. extern "C" guards are compile-time only and inert for the Metal build (.c/.m never define __cplusplus).
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Stacked PR 1/2 of the h3.c CUDA port (ds4-style, Metal preserved).
I1 scaffold: h3_cuda.cu (real h3_cuda_probe + create/free/error, compute ops stubbed), cuda-spark/cuda-generic Makefile targets (nvcc+cuBLAS, sm_121 for GB10), Linux host-deps (h3_tokenizer.c stub, vImage->bilinear, POSIX guards), extern "C" linkage fix. Build-gated on DGX Spark: make cuda-spark compiles clean, h3 binary runs. Metal files untouched.