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b098b71b05
* topk_softmax * remove some file * fix atomix linear_offset * address various comment, and change sfc get_index api to static(tuple)
topk-softmax
This folder contains example for topk-softmax kernel using ck_tile tile-programming implementation. This kernel is often used in Moe model, before launching the fused-moe-gemm block. The input is a token*expert 2d matrix. The op will do a softmax per row(expert), then find the topk value for each row. Output is a token*topk weight(usually fp32) and index(int32) 2d tensor.
build
# in the root of ck_tile
mkdir build && cd build
sh ../script/cmake-ck-dev.sh ../ <arch> # you can replace this <arch> to gfx90a, gfx942...
make tile_example_topk_softmax -j
This will result in an executable build/bin/tile_example_topk_softmax
example
args:
-v weather do CPU validation or not (default:1)
-pr_i input data type. fp16/fp32 (representing 8/16/32 bit data) (default:fp16)
-pr_w output weight data type(currently only fp32 supported now) (default:fp32)
-t number of input tokens (default:32)
-e number of experts (default:8)
-k topk (default:2)
-st_i row stride of input, -1 means same as experts (default:-1)
-st_o row stride of output/indices, -1 means same as topk (default:-1)
-seed seed to be used, -1 means random every time (default:-1)
-kname when set to 1 it will print kernel name (default:0)