docs: clarify SMT and OMP acronyms in CpuPlatform (#39085)

d521dcdb · Md. Mekayel Anik · GitHub · 5daf6227 · d521dcdb
Unverified Commit d521dcdb authored Apr 08, 2026 by Md. Mekayel Anik Committed by GitHub Apr 07, 2026
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vllm/platforms/cpu.py vllm/platforms/cpu.py +3 -1

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--- a/vllm/platforms/cpu.py
+++ b/vllm/platforms/cpu.py
@@ -76,7 +76,9 @@ class CpuPlatform(Platform):
    dist_backend: str = "gloo"
    device_control_env_var = "CPU_VISIBLE_MEMORY_NODES"
    omp_process_manager = None
-    smt = 1  # SMT level for OMP - 4 threads on PowerPC, 1 on others
+    # Simultaneous Multithreading (SMT) level for OpenMP:
+    # 4 on PowerPC, 1 on non-PowerPC architectures
+    smt = 1
    global_cpu_mask = None
    simulate_numa = int(os.environ.get("_SIM_MULTI_NUMA", 0))