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Reduce total_num_tiles_q by one #644

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Dec 4, 2024
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Reduce total_num_tiles_q by one #644

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2 changes: 1 addition & 1 deletion include/flashinfer/attention/scheduler.cuh
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Original file line number Diff line number Diff line change
Expand Up @@ -483,7 +483,7 @@ inline auto PrefillSplitQOKVIndptr(IdType* qo_indptr_h, IdType* kv_indptr_h,
// number of rows and the batch size. The sum of qo lengths rounded
// up to cta_tile_q will not exceed this number derived from the total
// number of rows.
total_num_tiles_q = ceil_div(total_num_rows, cta_tile_q) + batch_size;
total_num_tiles_q = ceil_div(total_num_rows, cta_tile_q) + batch_size - 1;
} else {
int64_t sum_packed_qo_len = 0;
for (uint32_t i = 0; i < batch_size; ++i) {
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