cherry pick save/load in the_one_ps (#37461)

* save/load in ps runtime(the_one_ps) (#36097)

* add trainer desc config to distributed strategy

* code style modified

* data_feed set lod

* fix bug

* code style

* fix bug

* save load

* save load

* save unittest

* add unittest of the_one_ps

* unittest

* add todo in communicator sendsparse

* fix bug in save_inference_model (#37362)

Author: esythan

paddle/fluid/distributed/service/communicator.cc

@@ -283,6 +283,18 @@ void Communicator::RpcSendSparse(const std::string &var_name, int table_id,
     push_g_vec.push_back(tensor->mutable_value()->data<float>() + i * dim);
   }
 
+  // TODO(wangguanqun): padding_idx is not ignored, this is a bug.
+  // if padding_idx == padding in datareader, the server will core.
+  /*
+  for (size_t i = 0; i < tensor->rows().size(); ++i) {
+    uint64_t real_id = static_cast<uint64_t>(tensor->rows()[i]);
+    if (real_id != 0) {
+      sparse_push_keys.push_back(real_id);
+      push_g_vec.push_back(tensor->mutable_value()->data<float>() + i * dim);
+    }
+  }
+  */
+
   ++_async_call_num;
   DownpourBrpcClosure *closure = new DownpourBrpcClosure(
       request_call_num, [this, request_call_num](void *done) {
@@ -353,6 +365,17 @@ void Communicator::InitParams(const RecvCtxMap &recv_varname_to_ctx) {
   return;
 }
 
+void Communicator::PullDense(const RecvCtxMap &recv_varname_to_ctx) {
+  for (auto &iter : recv_varname_to_ctx) {
+    auto &table_id = iter.first;
+    auto &varnames = iter.second;
+    RpcRecvDense(varnames, table_id, recv_scope_);
+    VLOG(1) << "pull dense param to table " << table_id
+            << " from 0' trainer done";
+  }
+  return;
+}
+
 void Communicator::RpcProfilerControl() {
   if (trainer_id_ == 0) {
     if (!do_server_profiler_ && platform::IsProfileEnabled()) {

paddle/fluid/distributed/service/communicator.h

@@ -271,6 +271,8 @@ class Communicator {
 
   virtual void InitParams(const RecvCtxMap &recv_varname_to_ctx);
 
+  virtual void PullDense(const RecvCtxMap &recv_varname_to_ctx);
+
   virtual void Start() = 0;
 
   virtual void Stop() = 0;

paddle/fluid/distributed/table/common_sparse_table.cc

@@ -279,18 +279,25 @@ int32_t CommonSparseTable::set_global_lr(float* lr) {
   return 0;
 }
 
-int32_t CommonSparseTable::load(const std::string& path,
+int32_t CommonSparseTable::load(const std::string& dirname,
                                 const std::string& param) {
   auto begin = GetCurrentUS();
   rwlock_->WRLock();
-  LoadFromText(path, param, _shard_idx, _shard_num, task_pool_size_,
+  auto varname = _config.common().table_name();
+  std::string var_store =
+      string::Sprintf("%s/%s%s", dirname, varname, PSERVER_SAVE_SUFFIX);
+  std::string shard_var_pre =
+      string::Sprintf("%s.block%d", varname, _shard_idx);
+  std::string value_ = string::Sprintf("%s/%s.txt", var_store, shard_var_pre);
+  std::string meta_ = string::Sprintf("%s/%s.meta", var_store, shard_var_pre);
+
+  LoadFromText(value_, meta_, _shard_idx, _shard_num, task_pool_size_,
                &shard_values_);
   rwlock_->UNLock();
   auto end = GetCurrentUS();
 
-  auto varname = _config.common().table_name();
-  VLOG(0) << "load " << varname << " with value: " << path
-          << " , meta: " << param
+  VLOG(0) << "load " << varname << " with value: " << value_
+          << " , meta: " << meta_
           << " using: " << std::to_string((end - begin) / 1e+6) << " seconds";
 
   return 0;

paddle/fluid/pybind/fleet_py.cc

@@ -158,7 +158,8 @@ void BindDistCommunicator(py::module* m) {
       .def("start", &Communicator::Start)
       .def("push_sparse_param", &Communicator::RpcSendSparseParam)
       .def("is_running", &Communicator::IsRunning)
-      .def("init_params", &Communicator::InitParams);
+      .def("init_params", &Communicator::InitParams)
+      .def("pull_dense", &Communicator::PullDense);
   //  .def("recv", &Communicator::RecvNoBarrier);
 }
 

python/paddle/distributed/fleet/runtime/the_one_ps.py

@@ -868,11 +868,11 @@ def _init_server(self, dirname=None, var_names=None, **kwargs):
 
         for var_name in load_varnames:
             table_id = sparse_table_maps[var_name]
-            path = os.path.join(dirname, var_name + PSERVER_SAVE_SUFFIX,
-                                "{}.block{}.txt".format(var_name, pserver_id))
-            meta = os.path.join(dirname, var_name + PSERVER_SAVE_SUFFIX,
-                                "{}.block{}.meta".format(var_name, pserver_id))
-            self._server.load_sparse(path, meta, table_id)
+            # path = os.path.join(dirname, var_name + PSERVER_SAVE_SUFFIX,
+            #                     "{}.block{}.txt".format(var_name, pserver_id))
+            # meta = os.path.join(dirname, var_name + PSERVER_SAVE_SUFFIX,
+            #                     "{}.block{}.meta".format(var_name, pserver_id))
+            self._server.load_sparse(dirname, "0", table_id)
 
     def _run_server(self):
         if self.role_maker._is_heter_worker():
@@ -967,8 +967,12 @@ def _save_distributed_persistables(self,
                 TheOnePSRuntime.__exclude_vars(saved_varnames),
                 main_program.list_vars()))
 
+        self._communicator.pull_dense(denses)
+
         import paddle
         for var in remaining_vars:
+            # if var.name not in recv_dense_varnames:
+            #     continue
             tensor = var.get_value()
             paddle.save(
                 tensor, os.path.join(dirname, var.name), use_binary_format=True)
@@ -1063,8 +1067,64 @@ def _save_inference_model(self, *args, **kwargs):
     def _save_persistables(self, *args, **kwargs):
         self._ps_inference_save_persistables(*args, **kwargs)
 
+    def _load_sparse_params(self, dirname, context, main_program, mode):
+        from paddle.fluid.incubate.fleet.parameter_server.ir.public import get_sparse_tablenames
+        distributed_varnames = get_sparse_tablenames(
+            self.compiled_strategy.origin_main_program, True)
+        values = []
+        for id, names in context.items():
+            if names[0] not in distributed_varnames:
+                # TODO: only load sparse param from local
+                warnings.warn("varname is not in distributed_varnames, pass")
+            # load sparse & distributed param on server
+            self._worker.load_one_table(id, dirname, mode)
+            values.extend(names)
+        return values
+
+    def _load_distributed_persistables(self, dirname, main_program=None,
+                                       mode=0):
+        if main_program is None:
+            main_program = self.compiled_strategy.get_origin_ps_main_program()
+
+        if isinstance(main_program, CompiledProgram):
+            raise TypeError(
+                "in fleet.save() function, main_program must be as Program type, CompiledProgram is not allowed"
+            )
+
+        denses = self.compiled_strategy.get_the_one_recv_context(
+            is_dense=True,
+            split_dense_table=self.role_maker._is_heter_parameter_server_mode,
+            use_origin_program=True)
+        sparses = self.compiled_strategy.get_the_one_recv_context(
+            is_dense=False,
+            split_dense_table=self.role_maker._is_heter_parameter_server_mode,
+            use_origin_program=True)
+
+        sparse_varnames = self._load_sparse_params(dirname, sparses,
+                                                   main_program, mode)
+
+        recv_dense_varnames = []
+        for id, names in denses.items():
+            recv_dense_varnames.extend(names)
+
+        loaded_varnames = sparse_varnames
+
+        remaining_vars = list(
+            filter(
+                TheOnePSRuntime.__exclude_vars(loaded_varnames),
+                main_program.list_vars()))
+
+        import paddle
+        for var in remaining_vars:
+            if var.name not in recv_dense_varnames:
+                continue
+            tensor = paddle.load(os.path.join(dirname, var.name))
+            var.set_value(tensor)
+
+        self._communicator.init_params(denses)
+
     def load_model(self, path, mode):
-        self._worker.load_model(path, mode)
+        self._load_distributed_persistables(path, mode=mode)
 
     def _shrink(self, threshold):
         import paddle.distributed.fleet as fleet

python/paddle/fluid/communicator.py

@@ -161,6 +161,9 @@ def recv(self):
     def init_params(self, context):
         self.communicator_.init_params(context)
 
+    def pull_dense(self, context):
+        self.communicator_.pull_dense(context)
+
     def push_sparse_param(self, var_name, table_id=-1, scope=global_scope()):
         if not self.is_running():
             raise ValueError(

python/paddle/fluid/tests/unittests/test_fleet_base_2.py

@@ -36,8 +36,13 @@ def test_ps_minimize(self):
 
         input_x = paddle.fluid.layers.data(
             name="x", shape=[32], dtype='float32')
+        input_slot = paddle.fluid.layers.data(
+            name="slot", shape=[1], dtype='int64')
         input_y = paddle.fluid.layers.data(name="y", shape=[1], dtype='int64')
 
+        emb = paddle.fluid.layers.embedding(
+            input=input_slot, size=[10, 9], is_sparse=True)
+        input_x = paddle.concat(x=[input_x, emb], axis=1)
         fc_1 = paddle.fluid.layers.fc(input=input_x, size=64, act='tanh')
         fc_2 = paddle.fluid.layers.fc(input=fc_1, size=64, act='tanh')
         prediction = paddle.fluid.layers.fc(input=[fc_2], size=2, act='softmax')
@@ -63,11 +68,14 @@ def test_ps_minimize(self):
         compiled_prog = fluid.compiler.CompiledProgram(
             fluid.default_main_program())
 
+        fleet.init_worker()
         fleet.fleet.save(dirname="/tmp", feed=['x', 'y'], fetch=[avg_cost])
         fleet.fleet.save(
             dirname="/tmp", feed=[input_x, input_y], fetch=[avg_cost])
         fleet.fleet.save(dirname="/tmp")
 
+        fleet.load_model(path="/tmp", mode=0)
+
         self.assertRaises(
             Exception,
             fleet.save_inference_model,