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Shader cache and descriptors, launch_gpu_kernel submit with fence, join list writeback into kept Python args, and saxpy smoke under _ext.gpu.testing.
K-T0BIAS
merged commit Sep 12, 2026
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4-native-gpu-support-cthreads-for-vulkanspir-v
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Summary
gpu().launch_gpu_kernel,and
SpawnedGpuKernel::join(fence → barrier → download → in-place list writeback).smoke_launch_saxpy; pytest skips without GPU.gpu()/@Gpu,Threadable marshal, inflight store, empty-list dummy SSBOs.