Files
agentic-kvc/third_party/vllm/csrc/quantization/machete/machete_interleaving_utils.cuh
Gahow Wang 445e491123 Add vLLM v0.18.1 source tree with KV transfer abort fix
third_party/vllm/ now tracked in git for direct patch management.
Based on vLLM v0.18.1 release with one patch applied:

  vllm/v1/core/sched/scheduler.py:
    Replace fatal assert with graceful skip when KV transfer callback
    arrives for an already-aborted request during PD disaggregated serving.

Future vLLM modifications should be made directly in third_party/vllm/
and committed normally. The patches/ directory is kept as documentation
of what changed from upstream.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
2026-05-22 00:30:38 +08:00

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#pragma once
#include "cutlass/cutlass.h"
#include "cute/layout.hpp"
namespace machete {
using namespace cute;
// get an interleaved block layout where each element consecutive element has a
// stride of bit_stride and the block width is blk_bit_width,
// examples:
// size_bits<T> = 8, bit_stride = 8, blk_bit_width = 32 -> 4:1
// size_bits<T> = 8, bit_stride = 16, blk_bit_width = 32 -> (2, 2):(2, 1)
// size_bits<T> = 4, bit_stride = 8, blk_bit_width = 32 -> (4, 2):(2, 1)
// size_bits<T> = 4, bit_stride = 16, blk_bit_width = 32 -> (2, 4):(4, 1)
template <typename T, int bit_stride, int blk_bit_width>
CUTE_HOST_DEVICE static constexpr auto get_interleaved_blk_layout() {
static_assert(blk_bit_width % bit_stride == 0);
static_assert(bit_stride % cute::sizeof_bits_v<T> == 0);
constexpr auto elems_per_blk = blk_bit_width / cute::sizeof_bits_v<T>;
if constexpr (cute::sizeof_bits_v<T> == bit_stride) {
// identity layout
return Layout<Shape<Int<elems_per_blk>>>{};
} else {
constexpr auto elems_per_stride = bit_stride / cute::sizeof_bits_v<T>;
constexpr auto num_strides = elems_per_blk / elems_per_stride;
return Layout<Shape<Int<num_strides>, Int<elems_per_stride>>,
Stride<Int<elems_per_stride>, Int<1>>>{};
}
}
}; // namespace machete