code: def test_syncthreads(self):
      @jit.rawkernel()
      def f(x, y, buf):
          tid = jit.threadIdx.x + jit.threadIdx.y * jit.blockDim.x
          ntid = jit.blockDim.x * jit.blockDim.y
          buf[tid] = x[ntid - tid - 1]
          jit.syncthreads()
          y[tid] = buf[ntid - tid - 1]
  
      x = testing.shaped_random((1024,), dtype=numpy.int32, seed=0)
      y = testing.shaped_random((1024,), dtype=numpy.int32, seed=1)
      buf = testing.shaped_random((1024,), dtype=numpy.int32, seed=2)
      f((1,), (32, 32), (x, y, buf))
      assert bool((x == y).all())
  
imports: import numpy
  import pytest
  import cupy
  from cupyx import jit
  from cupy import testing
  from cupy.cuda import device
  from cupy.cuda import runtime
label_desc: Use image node_id 19 for calling the TestRaw obj's underlying member method code with example usage: obj.test_syncthreads() without return types