feat: Set warmup salt to true as default

src/inference_endpoint/config/schema.py

@@ -513,7 +513,7 @@ class WarmupConfig(BaseModel):
             help="Prepend a unique random hex salt to each warmup prompt",
         ),
     ] = Field(
-        False, description="Prepend a unique random hex salt to each warmup prompt"
+        True, description="Prepend a unique random hex salt to each warmup prompt"
     )
     drain: Annotated[
         bool,

src/inference_endpoint/config/templates/concurrency_template_full.yaml

@@ -84,7 +84,7 @@ settings:
   warmup:
     enabled: false  # Enable warmup phase before performance run
     n_requests: null  # Warmup request count (None = full dataset once)
-    salt: false  # Prepend a unique random hex salt to each warmup prompt
+    salt: true  # Prepend a unique random hex salt to each warmup prompt
     drain: false
     warmup_random_seed: 42  # RNG seed for warmup scheduling and sample ordering
 endpoint_config:

src/inference_endpoint/config/templates/offline_template_full.yaml

@@ -84,7 +84,7 @@ settings:
   warmup:
     enabled: false  # Enable warmup phase before performance run
     n_requests: null  # Warmup request count (None = full dataset once)
-    salt: false  # Prepend a unique random hex salt to each warmup prompt
+    salt: true  # Prepend a unique random hex salt to each warmup prompt
     drain: false
     warmup_random_seed: 42  # RNG seed for warmup scheduling and sample ordering
 endpoint_config:

src/inference_endpoint/config/templates/online_template_full.yaml

@@ -84,7 +84,7 @@ settings:
   warmup:
     enabled: false  # Enable warmup phase before performance run
     n_requests: null  # Warmup request count (None = full dataset once)
-    salt: false  # Prepend a unique random hex salt to each warmup prompt
+    salt: true  # Prepend a unique random hex salt to each warmup prompt
     drain: false
     warmup_random_seed: 42  # RNG seed for warmup scheduling and sample ordering
 endpoint_config:

tests/unit/commands/test_benchmark.py

@@ -412,7 +412,7 @@ def test_defaults(self):
         cfg = WarmupConfig()
         assert cfg.enabled is False
         assert cfg.n_requests is None
-        assert cfg.salt is False
+        assert cfg.salt is True
         assert cfg.drain is False
 
     @pytest.mark.unit
@@ -837,6 +837,17 @@ def test_warmup_n_requests_none_when_unset(self, base_rt_settings, simple_datase
 
         assert phases[0].runtime_settings.n_samples_to_issue is None
 
+    @pytest.mark.unit
+    def test_warmup_defaults_uses_salt(self, base_rt_settings, simple_dataset):
+        config = OfflineConfig(
+            **_OFFLINE_KWARGS,
+            settings=OfflineSettings(warmup=WarmupConfig(enabled=True)),
+        )
+        ctx = self._make_ctx(config, base_rt_settings, simple_dataset)
+        phases = _build_phases(ctx)
+
+        assert phases[0].dataset._salt_rng is not None
+
     @pytest.mark.unit
     def test_warmup_without_salt_uses_raw_dataloader(
         self, base_rt_settings, simple_dataset