[Auto Parallel]Generate default cluster (#44150)

* generate default cluster

* add unittest

python/paddle/distributed/auto_parallel/cluster.py

@@ -16,6 +16,7 @@ import os
 import json
 from enum import IntEnum
 from enum import unique
+import paddle
 
 
 @unique
@@ -138,7 +139,7 @@ class Device:
 class Link:
 
     default_hop = 1
-    default_nic_bandwith = 24
+    default_nic_bandwidth = 24
 
     def __init__(self, source, target):
         self._src = source
@@ -411,6 +412,174 @@ class Cluster:
         self._alpha_latency = None
         self._rank_to_device_id = {}
         self._device_id_to_rank = {}
+        # This property only be valid when the cluster consists of machines,
+        # which have the same number accelerators.
+        self._num_devices_per_machine = None
+
+    def gen_default_config_cluster(self,
+                                   gpu_model="V100",
+                                   cpu_model="6271C",
+                                   node_count=1,
+                                   device_count=1,
+                                   gpu_memory=32,
+                                   cpu_memory=503,
+                                   inter_bandwidth=24,
+                                   intra_bandwidth=235,
+                                   gpu_dp_gflops=7800,
+                                   gpu_sp_gflops=15700,
+                                   cpu_dp_gflops=75,
+                                   cpu_sp_gflops=150):
+        """Generate cluster by default config."""
+        gpu_models = ["V100", "A100", "H100", "A2", "A10", "A16", "A30", "A40"]
+        xpu_models = ["XPU"]
+        npu_models = ["NPU"]
+        dcu_models = ["DCU"]
+        all_gpu_models = gpu_models + xpu_models + npu_models + dcu_models
+        assert gpu_model in all_gpu_models
+        self._num_devices_per_machine = device_count
+
+        def _convert_to_type(gpu_model):
+            type = None
+            if gpu_model in gpu_models:
+                type = "GPU"
+            elif gpu_model in xpu_models:
+                type = "XPU"
+            elif gpu_model in npu_models:
+                type = "NPU"
+            elif gpu_model in dcu_models:
+                type = "DCU"
+            assert type is not None
+
+            return type
+
+        def _convert_to_model(gpu_model, gpu_memory):
+            model = None
+            if gpu_model == "V100":
+                model = "Tesla V100-SXM2-" + str(gpu_memory) + "GB"
+            assert model is not None
+
+            return model
+
+        def _convert_to_cpu_info(cpu_model):
+            arch, vendor, model = None, None, None
+            if cpu_model == "6271C":
+                arch = "x86_64"
+                vendor = "GenuineIntel"
+                model = "Intel(R) Xeon(R) Gold 6271C CPU @ 2.60G"
+            elif cpu_model == "6148":
+                arch = "x86_64"
+                vendor = "GenuineIntel"
+                model = "Intel(R) Xeon(R) Gold 6148 CPU @ 2.40G"
+            assert arch is not None
+            assert vendor is not None
+            assert model is not None
+
+            return arch, vendor, model
+
+        cluster_info = {}
+        cluster_info["machines"] = []
+        global_id = 0
+        global_id_to_device_type = {}
+        global_id_to_node = {}
+        # NOTE: It will support NPU, XPU, DCU models in the future, it is just a fake value now
+        for i in range(node_count):
+            machine = {}
+            # NOTE: The hostname is host_0, host_1, ...
+            machine["hostname"] = "host_" + str(i)
+            # NOTE: The addr is localhost, if need actual addr, it should be reset manually
+            machine["addr"] = "127.0.0.1"
+            # NOTE: The port is a default value
+            machine["port"] = 60009
+            machine["links"] = []
+
+            devices = []
+            local_id = 0
+
+            for j in range(device_count):
+                device = {}
+                global_id = global_id if i == 0 and j == 0 else global_id + 1
+
+                local_id += 1
+                type = _convert_to_type(gpu_model)
+                model = _convert_to_model(gpu_model, gpu_memory)
+                dp_gflops = gpu_dp_gflops
+                sp_gflops = gpu_dp_gflops
+                memory = gpu_memory
+
+                device["global_id"] = global_id
+                device["local_id"] = local_id
+                device["type"] = type
+                device["model"] = model
+                device["memory"] = memory
+                device["sp_gflops"] = sp_gflops
+                device["dp_gflops"] = dp_gflops
+                global_id_to_device_type[global_id] = type
+                global_id_to_node[global_id] = i
+                devices.append(device)
+
+            # add cpu device and nic device, just one cpu
+            cpu_device = {}
+            arch, vendor, model = _convert_to_cpu_info(cpu_model)
+            sp_gflops = cpu_sp_gflops
+            dp_gflops = cpu_dp_gflops
+            global_id += 1
+            local_id = 0
+            memory = cpu_memory
+            type = "CPU"
+            cpu_device["arch"] = arch
+            cpu_device["vendor"] = vendor
+            cpu_device["model"] = model
+            cpu_device["sp_gflops"] = sp_gflops
+            cpu_device["dp_gflops"] = dp_gflops
+            cpu_device["global_id"] = global_id
+            cpu_device["local_id"] = local_id
+            cpu_device["memory"] = memory
+            cpu_device["type"] = type
+            global_id_to_node[global_id] = i
+            global_id_to_device_type[global_id] = type
+            devices.append(cpu_device)
+
+            nic_device = {}
+            global_id += 1
+
+            # add NIC
+            type = "NIC"
+            width = 12.5
+            ip = "127.0.0.1"
+            local_id = 0
+            nic_device["type"] = type
+            nic_device["local_id"] = type
+            nic_device["global_id"] = global_id
+            global_id_to_device_type[global_id] = type
+            global_id_to_node[global_id] = i
+            devices.append(nic_device)
+            machine["devices"] = devices
+            cluster_info["machines"].append(machine)
+
+        # build link
+        for i in range(0, global_id + 1):
+            for j in range(0, global_id + 1):
+                if i == j:
+                    continue
+                node_id_i = global_id_to_node[i]
+                node_id_j = global_id_to_node[j]
+                device_type_i = global_id_to_device_type[i]
+                device_type_j = global_id_to_device_type[j]
+                link = {}
+                source_global_id = i
+                target_global_id = j
+                link["source_global_id"] = source_global_id
+                link["target_global_id"] = target_global_id
+                # the same node and device_type, set intra_bandwidth, NVL
+                if node_id_i == node_id_j and device_type_i == device_type_j:
+                    link["type"] = "NVL"
+                    link["bandwidth"] = intra_bandwidth
+                else:
+                    link["type"] = "PHB"
+                    link["bandwidth"] = inter_bandwidth
+                cluster_info["machines"][node_id_i]["links"].append(link)
+
+        self._build_from_dict(cluster_info)
 
     @property
     def rank_to_device_id(self):
@@ -473,9 +642,7 @@ class Cluster:
                 device = machine.devices[device_global_id]
         return device
 
-    def build_from_file(self, json_file_path):
-        with open(json_file_path) as json_file:
-            cluster_info = json.load(json_file)
+    def _build_from_dict(self, cluster_info):
         machines_info = cluster_info["machines"]
         for machine_info in machines_info:
             machine_id = self._generate_machine_id()
@@ -533,6 +700,11 @@ class Cluster:
         else:
             self._alpha_latecy = None
 
+    def build_from_file(self, json_file_path):
+        with open(json_file_path) as json_file:
+            cluster_info = json.load(json_file)
+        self._build_from_dict(cluster_info)
+
     def _generate_machine_id(self):
         cur_machine_id = self._num_machines
         self._num_machines += 1
@@ -556,7 +728,7 @@ class Cluster:
         bandwidth = None
         # None means the source and target are not connected directly, set NIC in default
         if link is None:
-            bandwidth = Link.default_nic_bandwith
+            bandwidth = Link.default_nic_bandwidth
         else:
             bandwidth = link.bandwidth
 
@@ -608,6 +780,15 @@ class Cluster:
         assert count > 0
         return count
 
+    def get_num_machines(self):
+        return len(self._machines)
+
+    def get_num_devices_per_machine(self):
+        # Only return the number of accelerators of each machine.
+        # All machines must has the same number of devices and same type of devices.
+        assert self._num_devices_per_machine
+        return self._num_devices_per_machine
+
     def __str__(self):
         str = ""
         for machine in self.machines.values():
@@ -616,3 +797,29 @@ class Cluster:
 
     def __repr__(self):
         return self.__str__()
+
+
+def get_default_cluster():
+    cluster = Cluster()
+    local_device_count = os.getenv("PADDLE_LOCAL_SIZE")
+    if local_device_count is None:
+        local_device_count = 1
+    else:
+        local_device_count = int(local_device_count)
+    global_device_count = os.getenv("PADDLE_GLOBAL_SIZE")
+    if global_device_count is None:
+        node_count = 1
+    else:
+        global_device_count = int(global_device_count)
+        assert global_device_count % local_device_count == 0
+        node_count = int(global_device_count) // local_device_count
+    print("Node Count: ",
+          node_count,
+          "Local Device Size: ",
+          local_device_count,
+          "World size: ",
+          paddle.distributed.get_world_size(),
+          flush=True)
+    cluster.gen_default_config_cluster(node_count=node_count,
+                                       device_count=local_device_count)
+    return cluster

python/paddle/fluid/tests/unittests/auto_parallel/test_cluster.py

@@ -19,6 +19,7 @@ import json
 
 import paddle
 from paddle.distributed.auto_parallel.cluster import Cluster
+from paddle.distributed.auto_parallel.cluster import get_default_cluster
 
 cluster_json = """
 { 
@@ -1997,6 +1998,10 @@ class TestCluster(unittest.TestCase):
         self.assertTrue(devices == [0, 1, 2, 3])
         self.assertTrue(involved_machine_count == 1)
 
+        # Remove unnecessary files
+        if os.path.exists(cluster_json_path):
+            os.remove(cluster_json_path)
+
     def test_multi_machine(self):
         # Build cluster
         cluster_json_path = os.path.join(self.temp_dir.name,
@@ -2022,6 +2027,17 @@ class TestCluster(unittest.TestCase):
         if os.path.exists(cluster_json_path):
             os.remove(cluster_json_path)
 
+    def test_default_config_cluster(self):
+        cluster = Cluster()
+        cluster.gen_default_config_cluster(device_count=8)
+        # check machines and devices
+        self.assertTrue(cluster.get_num_machines() == 1)
+        self.assertTrue(cluster.get_num_devices_per_machine() == 8)
+
+    def test_default_cluster(self):
+        cluster = get_default_cluster()
+        self.assertTrue(isinstance(cluster, Cluster))
+
 
 if __name__ == "__main__":
     unittest.main()