[TRTLLM-8813][infra] Reduce GB200 multi-node test stages for release (#8860)

Signed-off-by: qqiao <[email protected]>

Author: EmmaQiaoCh

jenkins/L0_Test.groovy

@@ -2162,8 +2162,8 @@ def launchTestJobs(pipeline, testFilter)
         // "GB200-8_GPUs-2_Nodes-PyTorch-5": ["gb200-multi-node", "l0_gb200_multi_nodes", 5, 5, 8, 2],
     // ]
     multiNodesSBSAConfigs = [:]
-    multiNodesSBSAConfigs += (1..7).collectEntries { i ->
-        ["GB200-8_GPUs-2_Nodes-PyTorch-Post-Merge-${i}".toString(), ["gb200-multi-node", "l0_gb200_multi_nodes", i, 7, 8, 2]]
+    multiNodesSBSAConfigs += (1..3).collectEntries { i ->
+        ["GB200-8_GPUs-2_Nodes-PyTorch-Post-Merge-${i}".toString(), ["gb200-multi-node", "l0_gb200_multi_nodes", i, 3, 8, 2]]
     }
     fullSet += multiNodesSBSAConfigs.keySet()
 

jenkins/scripts/slurm_run.sh

@@ -53,6 +53,7 @@ testCmdLines=(
     "pytest"
     "-v"
     "--timeout-method=thread"
+    "--splitting-algorithm least_duration"
     "--timeout=$pytestTestTimeout"
     "--test-list=$testListPathNode"
     "--waives-file=$waivesListPathNode"