Environment

• Hardware Environment(Ascend/GPU/CPU):

device gpu

• Software Environment:
  -- MindSpore version (source or binary):
  -- Python version (e.g., Python 3.7.5):
  -- OS platform and distribution (e.g., Linux Ubuntu 16.04):
  -- GCC/Compiler version (if compiled from source):

Related testcase

test_ms_reduce_sum((65536,16), 'float32', axis=(1,), keepdims=True, poly_sch=poly_sch)

Describe the current behavior

When automatically binding blocks using auto-tiling, the block-y config is set to 65536, which exceeds the maximal number of block size of y-dimension according to cuda official guide.

Describe the expected behavior

Generate correct block configs.