lookup table fix

Author: seiriosPlus

python/paddle/fluid/transpiler/distribute_transpiler.py

@@ -877,9 +877,15 @@ def _create_table_optimize_block(self, pserver_index, pserver_program,
         # create table param and grad var in pserver program
         origin_param_var = self.origin_program.global_block().vars[
             self.table_name]
+
+        zero_dim = long(
+            math.ceil(origin_param_var.shape[0] / len(self.pserver_endpoints)))
+        table_shape = list(origin_param_var.shape)
+        table_shape[0] = zero_dim
+
         param_var = pserver_program.global_block().create_var(
             name=origin_param_var.name,
-            shape=origin_param_var.shape,
+            shape=table_shape,
             dtype=origin_param_var.dtype,
             type=core.VarDesc.VarType.SELECTED_ROWS,
             persistable=True)