code: def torch_perf_fn(group_A, group_B):
      for a, b in zip(group_A, group_B):
          torch.matmul(a, b)
  
imports: import torch
  import triton
  import triton.language
label_desc: Use image node_id 4 for calling a global function with example usage: torch_perf_fn(group_A, group_B) without return types