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* rename gemm_group_quant to gemm_quant * Add TensorWise quant mode * Cshuffle epilogue tests with tensor scaling * Add tensor quant to example * Don't use readfirstlane for reading scales - doesn't work for some reason * Add to changelog * revert include - from a merge problem? * revert common.hpp include * revert host.hpp include * remove unused utility function * rename quant pipeline problem * refactor quant tests * remove aquant utils * use TEST_F * fix all tests by changing gemm config * Use typed tests * fix copyright
Quant GEMM Matrix Multiplication
This folder contains examples of quant GEMMs using the ck_tile tile-programming implementation.
- AQuant kernel with blocks of A matrix sharing scales: custom GEMM pipeline
- BQuant kernel with blocks of B matrix sharing scales: custom GEMM pipeline
- Row and Column-wise scaled: scaling implemented in Epilogue
- Tensor-wise scaled: scaling implemented in Epilogue
build
# in the root of ck_tile
mkdir build && cd build
# you can replace <arch> with the appropriate architecture (for example gfx942) or leave it blank
../script/cmake-ck-dev.sh ../ <arch>
# Compile the quant kernels
make tile_example_gemm_quant_basic -j
This will result in an executable build/bin/tile_example_gemm_quant_basic
example
args:
-b batch size (default:1)
-m m dimension (default:1024)
-n n dimension (default:2048)
-k k dimension (default:64)
-a_layout Tensor A data layout (default: R)
-b_layout Tensor B data layout (default: C)
-c_layout Tensor C data layout (default: R)
-stride_a Tensor A stride (default:0)
-stride_b Tensor B stride (default:0)
-stride_c Tensor C stride (default:0)
-v 0. No validation, 1. Validation on CPU, 2. Validation on GPU (default:1)
-e Absolute error tolerance (default:1e-5)
-prec data type. fp8/bf8/i4fp8/i4bf8/i4f32fp8/i4f32bf8 (default:fp8)
-warmup number of iterations before benchmark the kernel (default:10)
-repeat number of iterations to benchmark the kernel (default:100)
-timer gpu:gpu timer, cpu:cpu timer (default:gpu)
-quant_mode Which quant method to use (aquant, bquant, tensor, rowcol)
User need to select correct mapping of config for each quant mode:
| quant_mode as runtime argument | Config in cpp file | |
|---|---|---|
| For selecting AQuant | aquant | GemmConfigQuant |
| For selecting Aquant with Preshuffle | aquant | GemmConfigPreshuffleQuant |
| For selecting BQuant | bquant | GemmConfigQuant |
| For selecting RowCol quant | rowcolquant | GemmConfigRowColQuant |