no create trainer var on listen_and_serv

paddle/fluid/operators/listen_and_serv_op.cc

@@ -85,7 +85,7 @@ class ListenAndServOp : public framework::OperatorBase {
     rpc_service_->SetScope(&recv_scope);
     rpc_service_->SetDevCtx(&dev_ctx);
     auto ins = Inputs("X");
-    auto fan_in = ins.size();
+    auto fan_in = Attr<int>("Fanin");
 
     auto *block = Attr<framework::BlockDesc *>(kOptimizeBlock);
     auto *program = block->Program();
@@ -163,6 +163,8 @@ from send_op and send back variables to recv_op.
         .AddCustomChecker([](const std::string &ip) { return !ip.empty(); });
     AddAttr<framework::BlockDesc *>(kOptimizeBlock,
                                     "BlockID to run on server side.");
+    AddAttr<int>("Fanin", "How many clients send to this server.")
+        .SetDefault(1);
   }
 };
 

python/paddle/v2/fluid/distribute_transpiler.py

@@ -14,7 +14,7 @@
 
 from __future__ import print_function
 import framework
-from framework import Program, default_main_program, Parameter, Variable
+from framework import Program, default_main_program, default_startup_program, Parameter, Variable
 import optimizer
 from layer_helper import LayerHelper
 from distributed_spliter import *
@@ -131,6 +131,7 @@ class DistributeTranspiler:
         # 4. append concat_op to trainer to update local weights.
         # 5. create new program for parameter server.
         # 6. create parameter server program by split_method generated endpoint->VarBlock
+        # 7. update startup_program, rename variables to variables with trainer_id
 
         pserver_endpoints = pservers.split(",")
 
@@ -175,7 +176,6 @@ class DistributeTranspiler:
             shape=[0])
 
         # create send_op
-        print("send inputs: ", send_inputs)
         send_op = program.global_block().append_op(
             type="send",
             inputs={"X": send_inputs},
@@ -194,6 +194,15 @@ class DistributeTranspiler:
                 outputs={"Out": [orig_param]},
                 attrs={"axis": 0})
 
+        # step 7
+        startup_prog = default_startup_program()
+        for varname in startup_prog.global_block().vars.keys():
+            if varname in param_var_mapping and \
+                len(param_var_mapping[varname]) == 1:
+                new_var_name = "%s.trainer_%d" % \
+                    (varname, self.trainer_id)
+                startup_prog.global_block().rename_var(varname, new_var_name)
+
     def _create_vars_from_blocklist(self, program, block_list):
         # Create respective variables using the block_list
         block_map = dict()
@@ -210,7 +219,6 @@ class DistributeTranspiler:
                 new_var_name = "%s.trainer_%d" % \
                     (orig_var.name, self.trainer_id)
                 program.global_block().rename_var(varname, new_var_name)
-                print("renaming OK...", varname, new_var_name)
                 var_mapping[varname] = \
                     [program.global_block().var(new_var_name)]
                 continue
@@ -377,10 +385,7 @@ class DistributeTranspiler:
         new_inputs = dict()
         # update param/grad shape first, then other inputs like
         # moment can use the updated shape
-        print("mark1")
         for key in opt_op.input_names:
-            # print("opt type: ", opt_op.type)
-            # print("opt op input: ", key)
             if key == "Grad":
                 grad_block = None
                 for g in self.param_grad_ep_mapping[endpoint]["grads"]:
@@ -427,7 +432,6 @@ class DistributeTranspiler:
 
                 new_inputs[key] = tmpvar
 
-        print("mark2")
         for key in opt_op.input_names:
             if key in ["Param", "Grad"]:
                 continue
@@ -451,7 +455,6 @@ class DistributeTranspiler:
             inputs=new_inputs,
             outputs=outputs,
             attrs=opt_op.attrs)
-        print("mark3")
 
     def _append_pserver_non_opt_ops(self, optimize_block, opt_op):
         program = optimize_block.program
@@ -505,8 +508,6 @@ class DistributeTranspiler:
                 suff_idx = v.name.find(".trainer_")
                 if suff_idx >= 0:
                     orig_var_name = v.name[:suff_idx]
-                print("create variable for program: %s.trainer_%d" %
-                      (orig_var_name, trainer_id))
                 var = pserver_program.global_block().create_var(
                     name="%s.trainer_%d" % (orig_var_name, trainer_id),
                     persistable=True,
@@ -517,11 +518,6 @@ class DistributeTranspiler:
         optimize_block = pserver_program.create_block(0)
         # Iterate through the ops and append ops as needed
         for idx, opt_op in enumerate(self.optimize_ops):
-            print("mark0")
-            print(opt_op.inputs.keys())
-            for v in opt_op.inputs.values():
-                print(v.name)
-                print(v.shape)
             is_op_on_pserver = self._is_op_on_pserver(endpoint,
                                                       self.optimize_ops, idx)
             if not is_op_on_pserver:
@@ -547,7 +543,7 @@ class DistributeTranspiler:
                 #     p.name
                 #     for p in self.param_grad_ep_mapping[endpoint]["grads"]
                 # ],
-                # "Fanin": self.trainers
+                "Fanin": self.trainers
             })
         pserver_program.sync_with_cpp()
         return pserver_program

python/paddle/v2/fluid/framework.py

@@ -761,17 +761,6 @@ class Block(object):
         else:
             raise ValueError("unsupported var type: %s", type(v))
 
-        def _clear_op_io_for_var(name):
-            for op in self.ops:
-                for k in op.inputs.keys():
-
-                    if op.inputs[k].name == name:
-                        op.inputs[k] = None
-                for k in op.outputs.keys():
-                    if op.outputs[k].name == name:
-                        op.outputs[k] = None
-
-        _clear_op_io_for_var(name)
         self.desc.rename_var(name, new_name)
         d = self.desc.find_var(new_name)
         var = None
@@ -797,17 +786,6 @@ class Block(object):
         # rename the python side, sync_with_cpp will only add
         # new vars/ops to python side.
         self.vars[new_name] = var
-        for op in self.ops:
-            print("### rename op i/o ", name, op.inputs)
-            if op.inputs:
-                for k in op.inputs.keys():
-                    if op.inputs[k] == None:
-                        print("rename input: ", name, var)
-                        op.inputs[k] = var
-            if op.outputs:
-                for k in op.outputs.keys():
-                    if op.outputs[k] == None:
-                        op.outputs[k] = var
         del self.vars[name]
         self.sync_with_cpp()
 
@@ -901,7 +879,6 @@ class Block(object):
         for p in other.iter_parameters():
             assert isinstance(p, Parameter)
             v = self.vars.get(p.name, None)
-            print("var shape to copy", v, p)
             if v is None:
                 raise ValueError("copy_param_info_from should be invoked with "
                                  "same topology")