add deepep precision test (#6984)

Author: zhoutianzi666

tests/distributed/test_hopper_ll_precision.py

@@ -0,0 +1,124 @@
+import unittest
+
+import paddle
+import paddle.distributed as dist
+import paddle.distributed.communication.deep_ep as deep_ep
+from paddle.distributed import fleet
+
+
+class TestFusedMoE(unittest.TestCase):
+    def setUp(self) -> None:
+        pass
+
+    def test_fused_moe(self):
+        num_ranks = dist.get_world_size()
+        if num_ranks <= 1:
+            return
+        rank_id = dist.get_rank()
+        paddle.seed(rank_id + 100)
+
+        strategy = fleet.DistributedStrategy()
+        strategy.hybrid_configs = {"dp_degree": 1, "mp_degree": num_ranks, "pp_degree": 1}
+        fleet.init(is_collective=True, strategy=strategy)
+
+        num_tokens, hidden, num_topk, num_experts = 64, 7168, 4, 64
+        num_rdma_bytes = deep_ep.Buffer.get_low_latency_rdma_size_hint(num_tokens, hidden, num_ranks, num_experts)
+
+        ep_group = fleet.get_hybrid_communicate_group().get_model_parallel_group()
+        buffer = deep_ep.Buffer(
+            ep_group,
+            num_nvl_bytes=0,
+            num_rdma_bytes=num_rdma_bytes,
+            low_latency_mode=True,
+            num_qps_per_rank=num_experts // num_ranks,
+        )
+
+        x = paddle.randn(shape=[num_tokens, hidden], dtype="bfloat16")
+        scores = paddle.randn([num_tokens, num_experts], dtype="float32").abs() + 1
+        topk_info = paddle.topk(scores, num_topk, axis=-1, largest=True, sorted=False)
+        topk_weight = topk_info[0]
+        topk_idx = topk_info[1]
+
+        gather_x = []
+        dist.all_gather(gather_x, x, ep_group)
+        gather_x = paddle.stack(gather_x, axis=0)
+
+        gather_topk_idx = []
+        dist.all_gather(gather_topk_idx, topk_idx, ep_group)
+        gather_topk_idx = paddle.concat(gather_topk_idx, axis=0)
+
+        handle = None
+
+        num_tests = 10
+
+        for _ in range(num_tests):
+
+            dispatch_use_fp8 = False
+            packed_recv_x, packed_recv_count, handle, event, hook = buffer.low_latency_dispatch(
+                x,
+                topk_idx,
+                None,  # expertwise_scale， used in w4a8.
+                num_tokens,
+                num_experts,
+                use_fp8=dispatch_use_fp8,
+                async_finish=False,
+                return_recv_hook=True,
+            )
+
+            if hook is not None:
+                hook()
+            if dispatch_use_fp8:
+                fp8, scale = packed_recv_x[0], packed_recv_x[1]
+                fp32 = fp8.cast("float32").reshape([0, 0, hidden // 128, 128])
+                scale = scale.transpose([0, 2, 1]).reshape([0, 0, hidden // 128, 1])
+                fp32 = fp32 * scale
+                fp32 = fp32.reshape([0, 0, -1])
+
+            combined_hidden_states, _, _ = buffer.low_latency_combine(
+                packed_recv_x,
+                topk_idx,
+                topk_weight,
+                handle,
+                zero_copy=False,
+                async_finish=False,
+                return_recv_hook=False,
+            )
+
+        num_local_experts = num_experts // num_ranks
+        start_ep_id = rank_id * num_local_experts
+        end_ep_id = start_ep_id + num_local_experts
+
+        num_tokens_send_by_rdma = 0
+        for token_id in range(topk_idx.shape[0]):
+            for dst_expert_id in topk_idx[token_id].numpy().tolist():
+                if dst_expert_id not in range(start_ep_id, end_ep_id):
+                    num_tokens_send_by_rdma += 1
+        print("num_tokens_send_by_rdma:", num_tokens_send_by_rdma)
+
+        (recv_src_info, recv_layout_range, _, _) = handle
+
+        for ep_id in range(start_ep_id, end_ep_id):
+            local_ep_id = ep_id - start_ep_id
+            token_num_this_ep = packed_recv_count[local_ep_id].item()
+            token_nums_per_rank = []
+            begin_idx_per_rank = []
+            for rank_id in range(num_ranks):
+                tmp = recv_layout_range[local_ep_id, rank_id].item()
+                begin_idx_per_rank.append(tmp >> 32)
+                token_nums_per_rank.append(tmp & ((1 << 32) - 1))
+            assert token_num_this_ep == sum(token_nums_per_rank)
+
+            for rank_id in range(num_ranks):
+                begin_idx = begin_idx_per_rank[rank_id]
+                end_idx = begin_idx + token_nums_per_rank[rank_id]
+                for token_id in range(begin_idx, end_idx):
+                    token = packed_recv_x[local_ep_id, token_id, :]
+                    # 这个token来自rank_id，并且是他的第多少个token呢？
+                    src_token_id = recv_src_info[local_ep_id, token_id].item()
+                    src_token = gather_x[rank_id, src_token_id, :]
+                    # print(token - src_token)
+                    assert (src_token - token).abs().max().item() == 0
+
+
+if __name__ == "__main__":
+    unittest.main()

tests/distributed/test_hopper_ll_precision_entry.py

@@ -0,0 +1,65 @@
+# Copyright (c) 2025 PaddlePaddle Authors. All Rights Reserved.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+import os
+import subprocess
+import sys
+
+
+def test_launch():
+    """
+    test_fused_moe
+    """
+    current_dir = os.path.dirname(os.path.abspath(__file__))
+    py_script = os.path.join(current_dir, "./test_hopper_ll_precision.py")
+
+    # 为了方便在PDC的环境下直接python运行这个脚本
+    os.environ.pop("PADDLE_ELASTIC_JOB_ID", None)
+    os.environ.pop("PADDLE_TRAINER_ENDPOINTS", None)
+    os.environ.pop("DISTRIBUTED_TRAINER_ENDPOINTS", None)
+    os.environ.pop("FLAGS_START_PORT", None)
+    os.environ.pop("PADDLE_ELASTIC_TIMEOUT", None)
+
+    os.environ["CUDA_VISIBLE_DEVICES"] = "0,1"
+
+    FD_API_PORT = int(os.getenv("FD_API_PORT", 8188))
+    command = [
+        sys.executable,
+        "-m",
+        "paddle.distributed.launch",
+        "--gpus",
+        "0,1",
+        "--master",
+        f"127.0.0.1:{FD_API_PORT}",
+        "--nnodes",
+        "1",
+        "--rank",
+        "0",
+        py_script,
+    ]
+
+    process = subprocess.Popen(command, stdout=subprocess.PIPE, stderr=subprocess.PIPE, text=True)
+
+    try:
+        stdout, stderr = process.communicate(timeout=400)
+        return_code = process.returncode
+    except subprocess.TimeoutExpired:
+        process.kill()
+        stdout, stderr = process.communicate()
+        return_code = -1
+    print(f"std_out: {stdout}")
+    assert return_code in (0, 250, 255), f"Process exited with code {return_code}, stdout: {stdout}, stderr: {stderr}"
+
+
+test_launch()