[UX] Reduce DeepGEMM warmup log output to single progress bar (#30903)

Signed-off-by: Matthew Bonanni <mbonanni@redhat.com>

vllm/model_executor/warmup/deep_gemm_warmup.py

@@ -10,7 +10,7 @@ import torch
 from tqdm import tqdm
 
 import vllm.envs as envs
-from vllm.distributed.parallel_state import get_dp_group
+from vllm.distributed.parallel_state import get_dp_group, is_global_first_rank
 from vllm.model_executor.layers.fused_moe.deep_gemm_moe import DeepGemmExperts
 from vllm.model_executor.layers.fused_moe.deep_gemm_utils import compute_aligned_M
 from vllm.model_executor.layers.fused_moe.layer import FusedMoE, FusedMoEModularMethod
@@ -175,7 +175,30 @@ def _fused_moe_grouped_gemm_may_use_deep_gemm(module: torch.nn.Module) -> bool:
 FP8_GEMM_NT_WARMUP_CACHE: set[torch.Size] = set()
 
 
-def _deepgemm_fp8_gemm_nt_warmup(w: torch.Tensor, ws: torch.Tensor, max_tokens: int):
+def _get_fp8_gemm_nt_m_values(w: torch.Tensor, max_tokens: int) -> list[int]:
+    """Get the M values to warmup for a given weight tensor."""
+    n, _ = w.size()
+    device = w.device
+
+    # Use optimal M values only if VLLM_DEEP_GEMM_WARMUP is set to "relax".
+    # Otherwise warmup all token sizes to avoid JIT compilation in hotpath
+    if envs.VLLM_DEEP_GEMM_WARMUP == "relax":
+        return _generate_optimal_warmup_m_values(max_tokens, n, device)
+    else:
+        assert envs.VLLM_DEEP_GEMM_WARMUP == "full", (
+            "Expected "
+            'VLLM_DEEP_GEMM_WARMUP env to be set to "full" but got '
+            f"{envs.VLLM_DEEP_GEMM_WARMUP}"
+        )
+        return list(range(1, max_tokens + 1))
+
+
+def _deepgemm_fp8_gemm_nt_warmup(
+    w: torch.Tensor,
+    ws: torch.Tensor,
+    max_tokens: int,
+    pbar: tqdm | None = None,
+):
     if w.size() in FP8_GEMM_NT_WARMUP_CACHE:
         return
 
@@ -189,27 +212,14 @@ def _deepgemm_fp8_gemm_nt_warmup(w: torch.Tensor, ws: torch.Tensor, max_tokens:
     )
     out = torch.empty((max_tokens, n), device=device, dtype=torch.bfloat16)
 
-    # Use optimal M values only if VLLM_DEEP_GEMM_WARMUP is set to "relax".
-    # Otherwise warmup all token sizes to avoid JIT compilation in hotpath
-    if envs.VLLM_DEEP_GEMM_WARMUP == "relax":
-        m_values = _generate_optimal_warmup_m_values(max_tokens, n, device)
-        desc = f"DeepGemm(fp8_gemm_nt) warmup (W={w.size()}) [relaxed]"
-    else:
-        assert envs.VLLM_DEEP_GEMM_WARMUP == "full", (
-            "Expected "
-            'VLLM_DEEP_GEMM_WARMUP env to be set to "full" but got '
-            f"{envs.VLLM_DEEP_GEMM_WARMUP}"
-        )
-        m_values = list(range(1, max_tokens + 1))
-        desc = f"DeepGemm(fp8_gemm_nt) warmup (W={w.size()}) [all tokens]"
-
-    pbar = tqdm(total=len(m_values), desc=desc)
+    m_values = _get_fp8_gemm_nt_m_values(w, max_tokens)
 
     for num_tokens in m_values:
         fp8_gemm_nt(
             (a1q[:num_tokens], a1q_scales[:num_tokens]), (w, ws), out[:num_tokens]
         )
-        pbar.update(1)
+        if pbar is not None:
+            pbar.update(1)
 
     FP8_GEMM_NT_WARMUP_CACHE.add(w.size())
 
@@ -217,20 +227,12 @@ def _deepgemm_fp8_gemm_nt_warmup(w: torch.Tensor, ws: torch.Tensor, max_tokens:
 GROUPED_FP8_GEMM_NT_CONTIGUOUS_WARMUP_CACHE: set[torch.Size] = set()
 
 
-def _deepgemm_grouped_fp8_gemm_nt_contiguous_warmup(
+def _get_grouped_gemm_params(
     w1: torch.Tensor,
     w2: torch.Tensor,
-    w1_scale: torch.Tensor,
-    w2_scale: torch.Tensor,
     num_topk: int,
     max_tokens: int,
-):
-    if (
-        w1.size() in GROUPED_FP8_GEMM_NT_CONTIGUOUS_WARMUP_CACHE
-        and w2.size() in GROUPED_FP8_GEMM_NT_CONTIGUOUS_WARMUP_CACHE
-    ):
-        return
-
+) -> tuple[int, int, torch.Tensor]:
     assert w1.size(0) == w2.size(0), "w1 and w2 must have the same number of experts"
 
     block_m = get_mk_alignment_for_contiguous_layout()[0]
@@ -253,6 +255,27 @@ def _deepgemm_grouped_fp8_gemm_nt_contiguous_warmup(
     )
     expert_ids = torch.repeat_interleave(expert_ids_block, block_m, dim=0)
 
+    return MAX_M, block_m, expert_ids
+
+
+def _deepgemm_grouped_fp8_gemm_nt_contiguous_warmup(
+    w1: torch.Tensor,
+    w2: torch.Tensor,
+    w1_scale: torch.Tensor,
+    w2_scale: torch.Tensor,
+    num_topk: int,
+    max_tokens: int,
+    pbar: tqdm | None = None,
+):
+    if (
+        w1.size() in GROUPED_FP8_GEMM_NT_CONTIGUOUS_WARMUP_CACHE
+        and w2.size() in GROUPED_FP8_GEMM_NT_CONTIGUOUS_WARMUP_CACHE
+    ):
+        return
+
+    MAX_M, block_m, expert_ids = _get_grouped_gemm_params(w1, w2, num_topk, max_tokens)
+    device = w1.device
+
     def _warmup(w: torch.Tensor, w_scale: torch.Tensor):
         _, n, k = w.size()
         a1q = torch.empty((MAX_M, k), device=device, dtype=torch.float8_e4m3fn)
@@ -261,15 +284,8 @@ def _deepgemm_grouped_fp8_gemm_nt_contiguous_warmup(
         )
         out = torch.empty((MAX_M, n), device=device, dtype=torch.bfloat16)
 
-        # Generate M values in block_m increments (already optimized for MoE)
         m_values = list(range(block_m, MAX_M + 1, block_m))
 
-        pbar = tqdm(
-            total=len(m_values),
-            desc=f"DeepGemm(m_grouped_fp8_gemm_nt_contiguous) warmup (W={w.size()}) "
-            f"[{len(m_values)} values, block_m={block_m}]",
-        )
-
         for num_tokens in m_values:
             m_grouped_fp8_gemm_nt_contiguous(
                 (a1q[:num_tokens], a1q_scales[:num_tokens]),
@@ -277,7 +293,8 @@ def _deepgemm_grouped_fp8_gemm_nt_contiguous_warmup(
                 out[:num_tokens],
                 expert_ids[:num_tokens],
             )
-            pbar.update(1)
+            if pbar is not None:
+                pbar.update(1)
 
     for w, ws in [(w1, w1_scale), (w2, w2_scale)]:
         if w.size() not in GROUPED_FP8_GEMM_NT_CONTIGUOUS_WARMUP_CACHE:
@@ -285,16 +302,18 @@ def _deepgemm_grouped_fp8_gemm_nt_contiguous_warmup(
             GROUPED_FP8_GEMM_NT_CONTIGUOUS_WARMUP_CACHE.add(w.size())
 
 
-def deepgemm_fp8_gemm_nt_warmup(model: torch.nn.Module, max_tokens: int):
+def deepgemm_fp8_gemm_nt_warmup(
+    model: torch.nn.Module, max_tokens: int, pbar: tqdm | None = None
+):
     dg_modules = [m for m in model.modules() if _fp8_linear_may_use_deep_gemm(m)]
 
     for dgm in dg_modules:
         w, ws, _ = _extract_data_from_linear_base_module(dgm)
-        _deepgemm_fp8_gemm_nt_warmup(w=w, ws=ws, max_tokens=max_tokens)
+        _deepgemm_fp8_gemm_nt_warmup(w=w, ws=ws, max_tokens=max_tokens, pbar=pbar)
 
 
 def deepgemm_grouped_fp8_gemm_nt_contiguous_warmup(
-    model: torch.nn.Module, max_tokens: int
+    model: torch.nn.Module, max_tokens: int, pbar: tqdm | None = None
 ):
     dg_modules = [
         m for m in model.modules() if _fused_moe_grouped_gemm_may_use_deep_gemm(m)
@@ -305,10 +324,48 @@ def deepgemm_grouped_fp8_gemm_nt_contiguous_warmup(
             dgm
         )
         _deepgemm_grouped_fp8_gemm_nt_contiguous_warmup(
-            w13, w2, w13_scale, w2_scale, num_topk, max_tokens
+            w13, w2, w13_scale, w2_scale, num_topk, max_tokens, pbar=pbar
         )
 
 
+def _count_warmup_iterations(model: torch.nn.Module, max_tokens: int) -> int:
+    seen_fp8_sizes: set[torch.Size] = set(FP8_GEMM_NT_WARMUP_CACHE)
+    seen_grouped_sizes: set[torch.Size] = set(
+        GROUPED_FP8_GEMM_NT_CONTIGUOUS_WARMUP_CACHE
+    )
+
+    total = 0
+    for m in model.modules():
+        if _fp8_linear_may_use_deep_gemm(m):
+            w, _, _ = _extract_data_from_linear_base_module(m)
+            if w.size() not in seen_fp8_sizes:
+                total += len(_get_fp8_gemm_nt_m_values(w, max_tokens))
+                seen_fp8_sizes.add(w.size())
+        elif _fused_moe_grouped_gemm_may_use_deep_gemm(m):
+            w13, _, w2, _, num_topk = _extract_data_from_fused_moe_module(m)
+            if w13.size() in seen_grouped_sizes and w2.size() in seen_grouped_sizes:
+                continue
+            MAX_M, block_m, _ = _get_grouped_gemm_params(w13, w2, num_topk, max_tokens)
+            n_values = (MAX_M - block_m) // block_m + 1
+            if w13.size() not in seen_grouped_sizes:
+                total += n_values
+                seen_grouped_sizes.add(w13.size())
+            if w2.size() not in seen_grouped_sizes:
+                total += n_values
+                seen_grouped_sizes.add(w2.size())
+    return total
+
+
 def deep_gemm_warmup(model: torch.nn.Module, max_tokens: int):
-    deepgemm_fp8_gemm_nt_warmup(model, max_tokens)
-    deepgemm_grouped_fp8_gemm_nt_contiguous_warmup(model, max_tokens)
+    total = _count_warmup_iterations(model, max_tokens)
+    if total == 0:
+        return
+
+    # Only show progress bar on rank 0 to avoid cluttered output
+    if is_global_first_rank():
+        with tqdm(total=total, desc="DeepGEMM warmup") as pbar:
+            deepgemm_fp8_gemm_nt_warmup(model, max_tokens, pbar)
+            deepgemm_grouped_fp8_gemm_nt_contiguous_warmup(model, max_tokens, pbar)
+    else:
+        deepgemm_fp8_gemm_nt_warmup(model, max_tokens, None)
+        deepgemm_grouped_fp8_gemm_nt_contiguous_warmup(model, max_tokens, None)