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[FORK][FIX] Limit microkernel unrolling factor #275

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[FORK][FIX] Limit microkernel unrolling factor #275

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3 changes: 2 additions & 1 deletion src/cpu/x64/brgemm/jit_brgemm_kernel.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -3130,7 +3130,8 @@ void jit_brgemm_kernel_t<Wmm>::ldb_loop(int bd_block2, bool is_bdb_tail,
}
rdb_group = rdb_group / brg.rd_block;
auto rbd_blocks = brg.rdb / rdb_group;
auto max_rdb_unroll = 8;
// unrolling is limited to prevent exceeding L1i cache
auto max_rdb_unroll = brg.with_src_dyn_quant ? 8 : 2;

if (brg.with_wei_decomp && rdb_group <= max_rdb_unroll) {
if (rbd_blocks > 0) {
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