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[CI] Shard hybrid SSM disaggregated accuracy tests #52354

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[CI] Shard hybrid SSM disaggregated accuracy tests #52354

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d7847f4
[CI] Shard Hybrid SSM NixlConnector PD accuracy tests into 3 config g…
khluu Aug 14, 2026
c8bc2ee
[CI] Rebalance hybrid SSM PD shards to 4-way for structural margin
khluu Aug 14, 2026
144aff9
[CI] Use count-based sharding for hybrid SSM sweep
NickLucche Sep 2, 2026
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6 changes: 4 additions & 2 deletions .buildkite/test_areas/disaggregated.yaml
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Original file line number Diff line number Diff line change
Expand Up @@ -115,21 +115,23 @@ steps:

- label: ":nvidia: (L4) Hybrid SSM NixlConnector PD accuracy"
key: hybrid-ssm-nixlconnector-pd-accuracy-tests-4-gpus
timeout_in_minutes: 60
timeout_in_minutes: 30
working_dir: "/vllm-workspace/tests"
device: l4
num_devices: 4
parallelism: 4
source_file_dependencies:
- vllm/distributed/kv_transfer/kv_connector/v1/nixl/
- tests/v1/kv_connector/nixl_integration/
commands:
- bash /vllm-workspace/.buildkite/scripts/install-kv-connectors.sh
- HYBRID_SSM=1 bash v1/kv_connector/nixl_integration/config_sweep_accuracy_test.sh
- HYBRID_SSM=1 CONFIG_SHARD_ID=$$BUILDKITE_PARALLEL_JOB CONFIG_NUM_SHARDS=$$BUILDKITE_PARALLEL_JOB_COUNT bash v1/kv_connector/nixl_integration/config_sweep_accuracy_test.sh
mirror:
amd:
label: ":amd: (MI300) Hybrid SSM NixlConnector PD accuracy"
dind: false
device: mi300_4
parallelism: 1
timeout_in_minutes: 55
depends_on:
- image-build-amd
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26 changes: 26 additions & 0 deletions tests/v1/kv_connector/nixl_integration/config_sweep_accuracy_test.sh
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Expand Up @@ -55,6 +55,32 @@ else
configs=("${tp_configs[@]}")
fi

# Opt-in CI sharding; unset means run every config for existing callers.
if [[ -n "${CONFIG_SHARD_ID:-}" || -n "${CONFIG_NUM_SHARDS:-}" ]]; then
if [[ ! "${CONFIG_SHARD_ID:-}" =~ ^(0|[1-9][0-9]*)$ ]] ||
[[ ! "${CONFIG_NUM_SHARDS:-}" =~ ^[1-9][0-9]*$ ]]; then
echo "CONFIG_SHARD_ID and CONFIG_NUM_SHARDS must be non-negative and positive integers, respectively."
exit 1
fi
if (( CONFIG_SHARD_ID >= CONFIG_NUM_SHARDS )); then
echo "CONFIG_SHARD_ID=${CONFIG_SHARD_ID} must be less than CONFIG_NUM_SHARDS=${CONFIG_NUM_SHARDS}."
exit 1
fi

shard_configs=()
for idx in "${!configs[@]}"; do
if (( idx % CONFIG_NUM_SHARDS == CONFIG_SHARD_ID )); then
shard_configs+=("${configs[$idx]}")
fi
done
if (( ${#shard_configs[@]} == 0 )); then
echo "Shard ${CONFIG_SHARD_ID}/${CONFIG_NUM_SHARDS} selected no configs."
exit 1
fi
configs=("${shard_configs[@]}")
echo "Shard ${CONFIG_SHARD_ID}/${CONFIG_NUM_SHARDS}: running ${#configs[@]} configs"
fi

run_tests() {
local label=$1
local extra_args=$2
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