Modify PIPELINE DOCs & Pipeline Serving supports low precision inference

python/examples/pipeline/imagenet/config.yml

@@ -31,3 +31,11 @@ op:
 
             #Fetch结果列表，以client_config中fetch_var的alias_name为准
             fetch_list: ["score"] 
+
+            #precsion, 预测精度，降低预测精度可提升推理速度
+            #GPU 支持: "fp32"(default), "fp16", "int8"；
+            #CPU 支持: "fp32"(default), "fp16", "bf16"(mkldnn); 不支持: "int8"
+            precision: "fp16"
+
+            #ir_optim开关
+            ir_optim: False

python/examples/pipeline/simple_web_service/config.yml

@@ -31,3 +31,11 @@ op:
 
             #Fetch结果列表，以client_config中fetch_var的alias_name为准
             fetch_list: ["price"]
+
+            #precsion, 预测精度，降低预测精度可提升预测速度
+            #GPU 支持: "fp32"(default), "fp16", "int8"；
+            #CPU 支持: "fp32"(default), "fp16", "bf16"(mkldnn); 不支持: "int8"
+            precision: "FP16"
+
+            #ir_optim开关
+            ir_optim: False 

python/paddle_serving_app/local_predict.py

@@ -119,8 +119,11 @@ class LocalPredictor(object):
             self.fetch_names_to_type_[var.alias_name] = var.fetch_type
 
         precision_type = paddle_infer.PrecisionType.Float32
-        if precision.lower() in precision_map:
+        if precision is not None and precision.lower() in precision_map:
             precision_type = precision_map[precision.lower()]
+        else:
+            logger.warning("precision error!!! Please check precision:{}".
+                           format(precision))
         if use_profile:
             config.enable_profile()
         if mem_optim:
@@ -156,8 +159,11 @@ class LocalPredictor(object):
 
         if not use_gpu and not use_lite:
             if precision_type == paddle_infer.PrecisionType.Int8:
-                config.enable_quantizer()
-            if precision.lower() == "bf16":
+                logger.warning(
+                    "PRECISION INT8 is not supported in CPU right now! Please use fp16 or bf16."
+                )
+                #config.enable_quantizer()
+            if precision is not None and precision.lower() == "bf16":
                 config.enable_mkldnn_bfloat16()
         self.predictor = paddle_infer.create_predictor(config)
 

python/pipeline/local_service_handler.py

@@ -44,7 +44,8 @@ class LocalServiceHandler(object):
                  mem_optim=True,
                  ir_optim=False,
                  available_port_generator=None,
-                 use_profile=False):
+                 use_profile=False,
+                 precision="fp32"):
         """
         Initialization of localservicehandler
 
@@ -62,6 +63,7 @@ class LocalServiceHandler(object):
            ir_optim: use calculation chart optimization, False default.
            available_port_generator: generate available ports
            use_profile: use profiling, False default.
+           precision: inference precesion, e.g. "fp32", "fp16", "int8"
 
         Returns:
            None
@@ -137,16 +139,17 @@ class LocalServiceHandler(object):
         self._server_pros = []
         self._use_profile = use_profile
         self._fetch_names = fetch_names
+        self._precision = precision
 
         _LOGGER.info(
             "Models({}) will be launched by device {}. use_gpu:{}, "
             "use_trt:{}, use_lite:{}, use_xpu:{}, device_type:{}, devices:{}, "
             "mem_optim:{}, ir_optim:{}, use_profile:{}, thread_num:{}, "
-            "client_type:{}, fetch_names:{}".format(
+            "client_type:{}, fetch_names:{} precision:{}".format(
                 model_config, self._device_name, self._use_gpu, self._use_trt,
-                self._use_lite, self._use_xpu, device_type, self._devices,
-                self._mem_optim, self._ir_optim, self._use_profile,
-                self._thread_num, self._client_type, self._fetch_names))
+                self._use_lite, self._use_xpu, device_type, self._devices, self.
+                _mem_optim, self._ir_optim, self._use_profile, self._thread_num,
+                self._client_type, self._fetch_names, self._precision))
 
     def get_fetch_list(self):
         return self._fetch_names
@@ -197,14 +200,15 @@ class LocalServiceHandler(object):
                 ir_optim=self._ir_optim,
                 use_trt=self._use_trt,
                 use_lite=self._use_lite,
-                use_xpu=self._use_xpu)
+                use_xpu=self._use_xpu,
+                precision=self._precision)
         return self._local_predictor_client
 
     def get_client_config(self):
         return os.path.join(self._model_config, "serving_server_conf.prototxt")
 
     def _prepare_one_server(self, workdir, port, gpuid, thread_num, mem_optim,
-                            ir_optim):
+                            ir_optim, precision):
         """
         According to self._device_name, generating one Cpu/Gpu/Arm Server, and
         setting the model config amd startup params.
@@ -216,6 +220,7 @@ class LocalServiceHandler(object):
             thread_num: thread num
             mem_optim: use memory/graphics memory optimization
             ir_optim: use calculation chart optimization
+            precision: inference precison, e.g."fp32", "fp16", "int8"
 
         Returns:
             server: CpuServer/GpuServer
@@ -256,6 +261,7 @@ class LocalServiceHandler(object):
         server.set_num_threads(thread_num)
         server.set_memory_optimize(mem_optim)
         server.set_ir_optimize(ir_optim)
+        server.set_precision(precision)
 
         server.load_model_config(self._model_config)
         server.prepare_server(
@@ -292,7 +298,8 @@ class LocalServiceHandler(object):
                     device_id,
                     thread_num=self._thread_num,
                     mem_optim=self._mem_optim,
-                    ir_optim=self._ir_optim))
+                    ir_optim=self._ir_optim,
+                    precision=self._precision))
 
     def start_server(self):
         """

python/pipeline/operator.py

@@ -138,6 +138,7 @@ class Op(object):
         self.devices = ""
         self.mem_optim = False
         self.ir_optim = False
+        self.precision = "fp32"
         if self._server_endpoints is None:
             server_endpoints = conf.get("server_endpoints", [])
             if len(server_endpoints) != 0:
@@ -159,6 +160,7 @@ class Op(object):
                     self.mem_optim = local_service_conf.get("mem_optim")
                     self.ir_optim = local_service_conf.get("ir_optim")
                     self._fetch_names = local_service_conf.get("fetch_list")
+                    self.precision = local_service_conf.get("precision")
                     if self.model_config is None:
                         self.with_serving = False
                     else:
@@ -173,7 +175,8 @@ class Op(object):
                                 device_type=self.device_type,
                                 devices=self.devices,
                                 mem_optim=self.mem_optim,
-                                ir_optim=self.ir_optim)
+                                ir_optim=self.ir_optim,
+                                precision=self.precision)
                             service_handler.prepare_server()  # get fetch_list
                             serivce_ports = service_handler.get_port_list()
                             self._server_endpoints = [
@@ -195,7 +198,8 @@ class Op(object):
                                 devices=self.devices,
                                 fetch_names=self._fetch_names,
                                 mem_optim=self.mem_optim,
-                                ir_optim=self.ir_optim)
+                                ir_optim=self.ir_optim,
+                                precision=self.precision)
                             if self._client_config is None:
                                 self._client_config = service_handler.get_client_config(
                                 )
@@ -560,7 +564,7 @@ class Op(object):
                       self._get_output_channels(), False, trace_buffer,
                       self.model_config, self.workdir, self.thread_num,
                       self.device_type, self.devices, self.mem_optim,
-                      self.ir_optim))
+                      self.ir_optim, self.precision))
             p.daemon = True
             p.start()
             process.append(p)
@@ -594,7 +598,7 @@ class Op(object):
                       self._get_output_channels(), True, trace_buffer,
                       self.model_config, self.workdir, self.thread_num,
                       self.device_type, self.devices, self.mem_optim,
-                      self.ir_optim))
+                      self.ir_optim, self.precision))
             # When a process exits, it attempts to terminate
             # all of its daemonic child processes.
             t.daemon = True
@@ -1064,7 +1068,7 @@ class Op(object):
 
     def _run(self, concurrency_idx, input_channel, output_channels,
              is_thread_op, trace_buffer, model_config, workdir, thread_num,
-             device_type, devices, mem_optim, ir_optim):
+             device_type, devices, mem_optim, ir_optim, precision):
         """
         _run() is the entry function of OP process / thread model.When client 
         type is local_predictor in process mode, the CUDA environment needs to 
@@ -1086,6 +1090,7 @@ class Op(object):
             devices: gpu id list[gpu], "" default[cpu]
             mem_optim: use memory/graphics memory optimization, True default.
             ir_optim: use calculation chart optimization, False default.
+            precision: inference precision, e.g. "fp32", "fp16", "int8" 
 
         Returns:
             None
@@ -1104,7 +1109,8 @@ class Op(object):
                     device_type=device_type,
                     devices=devices,
                     mem_optim=mem_optim,
-                    ir_optim=ir_optim)
+                    ir_optim=ir_optim,
+                    precision=precision)
 
                 _LOGGER.info("Init cuda env in process {}".format(
                     concurrency_idx))