0344a3fbb8
Translated from CCCL cub/device/dispatch/tuning/tuning_transform_tile.cuh. Uses hardware_capability dispatch instead of compute_capability.
34 lines
931 B
Plaintext
34 lines
931 B
Plaintext
// muh/include/muh/tuning/tuning_transform_tile.cuh — BI-V100
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//
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// Mirrors: cccl_upstream/cub/cub/device/dispatch/tuning/tuning_transform_tile.cuh
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// CCCL: tile-based transform, shares bytes-in-flight target with transform
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//
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// vllm relevance: fused activation+normalization tiles
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// SMEM risk: tile size is compile-time shape, not threads*items
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#pragma once
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#include "muh/hardware.cuh"
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#include "muh/tuning/common.cuh"
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namespace muh::tuning::transform_tile {
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struct TransformTilePolicy {
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int tile_size;
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int min_bytes_in_flight;
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};
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struct policy_selector {
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int elem_size;
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constexpr TransformTilePolicy operator()(const hardware_capability& hw) const {
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// BI-V100 per-SM BW ≈ A100 → bytes_in_flight = 16KB
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int bytes_in_flight = 16 * 1024;
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int tile = bytes_in_flight / elem_size;
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if (tile < 128) tile = 128;
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return {tile, bytes_in_flight};
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}
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};
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} // namespace muh::tuning::transform_tile
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