# Shared Buffer Storage Modes and Zero-Copy Passing > Source-anchored research for Shared Buffer Storage Modes and Zero-Copy Passing. Run status: COMPLETED. Parent: [Local Inference Micro-Architectures: Signaling, Quantization Superblocks, and Kernel Pipeline Scheduling](https://llms-explorer.com/tree/inference-microarchitectures-and-kernel-pipelines/) · 1 facets · 2 facts · page: https://llms-explorer.com/tree/shared-buffer-storage-modes-and-zero-copy-passing/ ## Facts and statements - MTLResourceStorageModeShared allocates memory in a unified system pool coherent between CPU and Metal GPU execution units without explicit cache flush instructions on Apple Silicon. (high confidence) — [source](https://developer.apple.com/documentation/metal/mtlresource/storagemode) - Passing unified buffer pointers between host Python runtimes and Metal compute kernels enables zero-copy tensor evaluation, reducing kernel invocation latency to sub-microsecond levels. (high confidence) — [source](https://developer.apple.com/documentation/metal/mtlresource/storagemode)