Skip to content

Draft: [TRTLLM][feat] Set NIXL backend to default #7535

New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

Sign up for GitHub

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

Closed
BatshevaBlack wants to merge 1 commit into from
Closed

Draft: [TRTLLM][feat] Set NIXL backend to default #7535

Show file tree
Hide file tree
Changes from all commits
Commits
Show all changes
1 commit
Select commit
File filter

Filter by extension

Filter by extension
Conversations
Failed to load comments.
Loading
Jump to
Jump to file
Failed to load files.
Loading
Diff view
Diff view
2 changes: 1 addition & 1 deletion cpp/tensorrt_llm/batch_manager/cacheTransceiver.cpp
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -88,7 +88,7 @@ std::unique_ptr<BaseCacheTransceiver> CacheTransceiverFactory::createCacheTransc
}
else
{
backendType = executor::CacheTransceiverConfig::BackendType::UCX;
backendType = executor::CacheTransceiverConfig::BackendType::NIXL;
}
}
cacheTransceiverConfig.value().setBackendType(backendType);
Expand Down
2 changes: 1 addition & 1 deletion examples/disaggregated/README.md
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -12,7 +12,7 @@ The `trtllm-serve` command supports the `extra-llm-config.yaml` parameter. In th

```yaml
cache_transceiver_config:
# KV cache transmission backend. Valid options include `DEFAULT` (i.e., UCX), `UCX`, `NIXL`.
# KV cache transmission backend. Valid options include `DEFAULT` (i.e., NIXL), `UCX`, `NIXL`.
backend: <str>
# KV cache buffer size. Set it ≥ the maximum ISL (Input Sequence Length) for best performance.
max_tokens_in_buffer: <int>
Expand Down
8 changes: 4 additions & 4 deletions tensorrt_llm/_torch/pyexecutor/kv_cache_transceiver.py
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -37,10 +37,10 @@ def create_kv_cache_transceiver(

if cache_transceiver_config.backend == BackendTypeCpp.DEFAULT:
# When cache_transceiver_config.backend is not set, fallback to env_vars settings
# UCX is the default backend
cache_transceiver_config.backend = BackendTypeCpp.UCX
# NIXL is the default backend
cache_transceiver_config.backend = BackendTypeCpp.NIXL
# Ordered by priority
env_vars = [("TRTLLM_USE_NIXL_KVCACHE", BackendTypeCpp.NIXL),
env_vars = [("TRTLLM_USE_UCX_KVCACHE", BackendTypeCpp.UCX),
("TRTLLM_USE_MPI_KVCACHE", BackendTypeCpp.MPI)]
for env_var, be_type in env_vars:
if getenv(env_var) == "1":
Expand All @@ -52,7 +52,7 @@ def create_kv_cache_transceiver(

if cache_transceiver_config.backend == BackendTypeCpp.MPI:
logger.warning(
"MPI CacheTransceiver is deprecated, UCX or NIXL is recommended")
"MPI CacheTransceiver is deprecated, NIXL or UCX is recommended")
elif cache_transceiver_config.backend == BackendTypeCpp.UCX:
logger.info(
f"Using UCX kv-cache transceiver. If your devices are not in the same domain, please consider setting "
Expand Down