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Driver mempool - #46
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cuMemFree waits for the whole device, so a loop of decompress() calls on the driver backend paid for it on every output array. Device memory now comes from a stream-ordered pool of our own per device (cuMemPoolCreate, release threshold max, as cupy keeps its blocks); free_pool() trims it. Drivers before CUDA 11.2 and devices without pools keep cuMemAlloc. decompress() of 8 Eiger-4M uint32 frames per call, 200 calls, L40S: 3.35 -> 1.55 ms per call (cupy 1.57); one frame per call 1.02 -> 0.55 ms. Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
… 12.9 CUDA 12.9 is the only toolkit with both sm_50 and Blackwell. The PTX stays compute_90 (--ptx) so the JIT still covers any GPU without a cubin. Same speed as the 12.6 cubins on an L40S; tests pass on L40S and H100. Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
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