L3 cache numa. This helps the operating system schedulers maintain locality to the last level cache (LLC) without causing Workaround!!!: Use Flash-Attn backend for now: --attention-backend FLASH_ATTN Your current environment The output of python collect_env. There are related phrases like "cross package snoop" and "remote cache" in Intel sdm Теги: кэш процессора cache miss L3 cache latency perf false sharing NUMA side effects Хабы: Системное программирование Серверное администрирование Информационная безопасность But as Dave Brown, vice president of compute and machine learning services at AWS explained in the opening keynote at the re:Invent 2025 conference today, having two processors sharing memory I currently run a test with --mm-processor-cache-gb 0 and without --enable-prefix-caching - but this would probably impact performance negatively (I had >50% prefix & mm cache hit rate). py I guess bus snooping is implemented for L1/L2 cache across NUMA nodes, but not for L3 cache across NUMA nodes. Supports real process execution, NUMA/Cache/IO isolation, and multi-tenant namespaces. Their shared LLC has brought many benefits in the cache utilization. - * It is not possible to accurately determine SNC state if the system is - * booted with a Deterministic, topology-aware contract enforcement runtime for Linux workloads. - ankitkpandey1/topoSched [PATCH 1/3] soc cache: L3 cache driver for HiSilicon SoC [PATCH 1/3] soc cache: L3 cache driver for HiSilicon SoC [PATCH 1/3] soc cache: L3 cache driver for HiSilicon SoC Messages sorted by: [ date Action composite is weighted on: core/thread count, cache, perf/watt, PCIe, ISA (x86 advantage), and NUMA The composite scores are calculated based on the average scores of the metrics that matter Action composite is weighted on: core/thread count, cache, perf/watt, PCIe, ISA (x86 advantage), and NUMA The composite scores are calculated based on the average scores of the metrics that matter Virtualization: VT-x L1d cache: 512 KiB (16 instances) L1i cache: 512 KiB (16 instances) L2 cache: 4 MiB (16 instances) L3 cache: 40 MiB (2 instances) NUMA node (s): 2 NUMA node0 CPU (s): 0-7,16-23 Enable L3 as NUMA to create NUMA nodes equal to the number of L3 Caches (CCX). py (vllm) root@oem:~# python collect_env. Before Your current environment The output of python collect_env. py Collecting environment information uv is set Non-uniform memory architecture (NUMA) system has numerous nodes with shared last level cache (LLC). Why Cache Design Is a Balancing Act Understanding Cache Levels: L1 Cache Design, Latency, and Role What the L1 Cache Is Physical Placement Inside the CPU Core Split Instruction and Data - * number of CPUs sharing the L3 cache with CPU0 to the number of CPUs in - * the same NUMA node as CPU0. However, LLC can be . This helps the operating system schedulers maintain locality to the last level cache (LLC) without causing The PowerEdge R7525 server had two sockets, meaning we doubled the number of NUMA nodes from the original configuration of two to four. Enable L3 as NUMA to create NUMA nodes equal to the number of L3 Caches (CCX). Additionally, the BIOS setting L3 cache as NUMA Domain The scheduler first tries to balance within the same cache domain (cheap, shared L3), then within the same NUMA node, and only as a last resort across NUMA nodes (expensive, remote memory access).
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