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Expand #3

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merged 2 commits into from
Dec 19, 2024
Merged

Expand #3

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c503b54
Merge pull request #4 from jeejeelee/punica-kernel-fusion
Abatom Dec 19, 2024
fbfcaad
improve expand
Abatom Dec 19, 2024
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16 changes: 12 additions & 4 deletions vllm/lora/ops/sgmv_expand.py
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Original file line number Diff line number Diff line change
Expand Up @@ -53,12 +53,20 @@ def _sgmv_expand_kernel(
"""
pid = tl.program_id(axis=0)
cur_batch = tl.program_id(axis=1)

slice_id = tl.program_id(axis=2)
cta_n_num = tl.cdiv(N, BLOCK_N)
pid_m = pid // cta_n_num
pid_n = pid % cta_n_num

M = tl.load(seq_lens + cur_batch)

num_pid_m = tl.cdiv(M, BLOCK_M)
num_pid_n = tl.cdiv(N, BLOCK_N)
GROUP_SIZE_M: tl.constexpr = 1
num_pid_in_group = GROUP_SIZE_M * num_pid_n
group_id = pid // num_pid_in_group
first_pid_m = group_id * GROUP_SIZE_M
group_size_m = min(num_pid_m - first_pid_m, GROUP_SIZE_M)
pid_m = first_pid_m + ((pid % num_pid_in_group) % group_size_m)
pid_n = (pid % num_pid_in_group) // group_size_m

if pid_m * BLOCK_M > M:
return
lora_index = tl.load(lora_indices + cur_batch)
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