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Add logic to stream weights in EmbeddingKVDB #2930

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Add logic to stream weights in EmbeddingKVDB #2930

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1eb6234
Add enable_raw_embedding_streaming from TBE config to EmbeddingKVDB (…
chouxi Apr 30, 2025
a9fb67f
Add logic to stream weights in EmbeddingKVDB
chouxi Apr 30, 2025
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11 changes: 11 additions & 0 deletions torchrec/distributed/batched_embedding_kernel.py
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Original file line number Diff line number Diff line change
Expand Up @@ -166,6 +166,17 @@ def _populate_ssd_tbe_params(config: GroupedEmbeddingConfig) -> Dict[str, Any]:
)
ssd_tbe_params["cache_sets"] = int(max_cache_sets)

ssd_tbe_params["table_names"] = [table.name for table in config.embedding_tables]
ssd_tbe_params["table_offsets"] = []
for emb_tbl in config.embedding_tables:
local_metadata = emb_tbl.local_metadata
if (
local_metadata is not None
and local_metadata.shard_offsets is not None
and len(local_metadata.shard_offsets) >= 1
):
ssd_tbe_params["table_offsets"].append(local_metadata.shard_offsets[0])

return ssd_tbe_params


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5 changes: 5 additions & 0 deletions torchrec/distributed/types.py
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Expand Up @@ -639,6 +639,7 @@ class KeyValueParams:
enable_async_update: Optional[bool]: whether to enable async update for l2 cache
bulk_init_chunk_size: int: number of rows to insert into rocksdb in each chunk
lazy_bulk_init_enabled: bool: whether to enable lazy(async) bulk init for SSD TBE
enable_raw_embedding_streaming: Optional[bool]: enable raw embedding streaming for SSD TBE

# Parameter Server (PS) Attributes
ps_hosts (Optional[Tuple[Tuple[str, int]]]): List of PS host ip addresses
Expand All @@ -660,6 +661,9 @@ class KeyValueParams:
enable_async_update: Optional[bool] = None # enable L2 cache async update
bulk_init_chunk_size: Optional[int] = None # number of rows
lazy_bulk_init_enabled: Optional[bool] = None # enable lazy bulk init
enable_raw_embedding_streaming: Optional[bool] = (
None # enable raw embedding streaming for SSD TBE
)

# Parameter Server (PS) Attributes
ps_hosts: Optional[Tuple[Tuple[str, int], ...]] = None
Expand All @@ -686,6 +690,7 @@ def __hash__(self) -> int:
self.enable_async_update,
self.bulk_init_chunk_size,
self.lazy_bulk_init_enabled,
self.enable_raw_embedding_streaming,
)
)

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