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[CK_Tile] Support for a4w4 (fp4) in block scale gemm AB quant (#3603)

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* chore: split block scale example instances in more separate files to speed up compile times

* wip: fp4 scaffolding for abquant

* feat: add fp4 decoding-while-loading to abquant pipeline

* feat: add support for fp4 CPU verification in abquant

* chore: add time tracking to reference calculation

* feat: add a4w4 test for blockscale gemm

* feat: optimize reference calculation by preconverting values to AccType

* feat: add fp4 to fp8 look-up table

* fix: reference to wrong ComputeDataType field in QuantProblem

* feat: type utilities for determining MFMA compute types

* feat: packed fp4 for abquant weight preshuffle

* feat: add separate tests for a4w4 base case, padding and preshuffleB

* fix: fp4 conversion on gfx950 attempting to use non-supported method

* fix: test case was using quant group sizes which don't work on gfx950 due to larger mfma tile size

* chore: add fp4 preshuffleb mode to block scale example

* chore: sanity check for packed types being 1 byte

* chore: clarify tensor dimension indices with constants

* chore: replace traits check with specialized check for packed types

* style: some minor refactoring and cleanup

* fix: correct conversion table for FNUZ fp8

* chore: add fp4 instances to main abquant instances again

* chore: use same initialization branch for int4 and fp4

* chore: add missing initialization for fp4 in block scale gemm example

---------

Co-authored-by: Thomas Ning <Thomas.Ning@amd.com>

[ROCm/composable_kernel commit: 6a6177a246]
This commit is contained in:
Erwin Terpstra
2026-01-30 12:40:50 +01:00
committed by GitHub
parent 1b1dd65b83
commit a5824466fb
28 changed files with 642 additions and 175 deletions
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3
include/ck_tile/core/arch/amd_buffer_addressing.hpp
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@@ -1544,7 +1544,8 @@ CK_TILE_DEVICE thread_buffer<T, N> amd_buffer_load_impl(int32x4_t src_wave_buffe
(N == 1 || N == 2 || N == 4 || N == 8 || N == 16 || N == 32)) ||
(std::is_same<T, pk_fp4_raw_t>::value &&
(N == 1 || N == 2 || N == 4 || N == 8 || N == 16)) ||
(std::is_same<T, pk_fp4_t>::value && (N == 1 || N == 2 || N == 4 || N == 8 || N == 16)),
(std::is_same<T, pk_fp4_t>::value &&
(N == 1 || N == 2 || N == 4 || N == 8 || N == 16 || N == 32)),
"wrong! not implemented");
using rtn_type = thread_buffer<T, N>;

2
include/ck_tile/core/arch/amd_buffer_addressing_builtins.hpp
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@@ -1414,7 +1414,7 @@ CK_TILE_DEVICE thread_buffer<T, N> amd_buffer_load_impl(int32x4_t src_wave_buffe
(std::is_same<T, pk_int4_t>::value &&
(N == 1 || N == 2 || N == 4 || N == 8 || N == 16 || N == 32) ||
(std::is_same<T, pk_fp4_t>::value &&
(N == 1 || N == 2 || N == 4 || N == 8 || N == 16))),
(N == 1 || N == 2 || N == 4 || N == 8 || N == 16 || N == 32))),
"wrong! not implemented");
using rtn_type = thread_buffer<T, N>;