Merge pull request #15351 from wopeizl/fixbuildissue

disable the parallel mode for adam op on windows test=develop

paddle/fluid/operators/optimizers/adam_op.h

@@ -486,9 +486,11 @@ class AdamOpKernel : public framework::OpKernel<T> {
               functor.adam_update(i, grad_data[row_index * row_numel + offset]);
             }
           }
-        } else if (FLAGS_inner_op_parallelism > 1 &&
-                   min_row_size_to_use_multithread > 0 &&
-                   param.dims()[0] > min_row_size_to_use_multithread) {
+        }
+#ifndef _WIN32
+        else if (FLAGS_inner_op_parallelism > 1 &&
+                 min_row_size_to_use_multithread > 0 &&
+                 param.dims()[0] > min_row_size_to_use_multithread) {
           VLOG(3) << "use multi thread, inner_op_parallelism="
                   << FLAGS_inner_op_parallelism
                   << " min_row_size_to_use_multithread="
@@ -542,7 +544,9 @@ class AdamOpKernel : public framework::OpKernel<T> {
                 }));
           }
           for (size_t i = 0; i < fs.size(); ++i) fs[i].wait();
-        } else {
+        }
+#endif  // !_WIN32
+        else {
           functor(param.numel());
         }
       } else if (platform::is_gpu_place(ctx.GetPlace())) {