ENH: Make memory allocation more aggressive on local (#514)

Co-authored-by: mergify[bot] <37929162+mergify[bot]@users.noreply.github.com>

Author: aresnow1

python/xorbits/_mars/deploy/oscar/local.py

@@ -217,6 +217,11 @@ def __init__(
             oscar_extra_conf=oscar_extra_conf,
         )
 
+        # make memory allocation policy more aggressive on local by
+        # assuming all the memory is available.
+        if self._config.get("scheduling", {}).get("mem_hard_limit", None) is None:
+            self._config["scheduling"]["mem_hard_limit"] = None
+
         self._bands_to_resource = execution_config.get_deploy_band_resources()
         self._supervisor_pool = None
         self._worker_pools = []

python/xorbits/_mars/services/scheduling/worker/quota.py

@@ -415,14 +415,22 @@ async def __post_create__(self):
         for band in band_to_resource.keys():
             band_config = self._band_configs.get(band[1], self._default_config)
             hard_limit = band_config.get("hard_limit")
-            actor_cls = MemQuotaActor if hard_limit else QuotaActor
-            self._band_quota_refs[band] = await mo.create_actor(
-                actor_cls,
-                band,
-                **band_config,
-                uid=MemQuotaActor.gen_uid(band[1]),
-                address=self.address,
-            )
+            if hard_limit:
+                self._band_quota_refs[band] = await mo.create_actor(
+                    MemQuotaActor,
+                    band,
+                    **band_config,
+                    uid=MemQuotaActor.gen_uid(band[1]),
+                    address=self.address,
+                )
+            else:
+                self._band_quota_refs[band] = await mo.create_actor(
+                    QuotaActor,
+                    band,
+                    quota_size=band_config["quota_size"],
+                    uid=QuotaActor.gen_uid(band[1]),
+                    address=self.address,
+                )
 
     async def __pre_destroy__(self):
         await asyncio.gather(