performance-tuning

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#performance-tuning

Best settings for harness work with llama.cpp + qwen 3.8

Reddit r/LocalLLaMA · 2d ago

The article provides optimized settings for using the Qwen 3.8 model with llama.cpp, highlighting performance gains in token generation speed and context window management on an RTX 3090 GPU.

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#performance-tuning

Qwen3.8-Flash on RTX3090 + 64GB RAM (but you only need 12GB VRAM)

Reddit r/LocalLLaMA · 4d ago

This article provides a detailed guide on running the Qwen3.8-Flash AI model on an RTX 3090 with 64GB RAM, discussing performance metrics, quantization settings, and deployment steps using tools like llamacpp.

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#performance-tuning

Debugging my new network, when 10 Gigabit Ethernet Runs at 300 Megabits

Lobsters Hottest · 4d ago Cached

Scott Hanselman debugs slow 10 Gigabit Ethernet performance by adjusting Intel NIC receive buffers and disabling Large Send Offload, identifying a Windows-specific issue.

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#performance-tuning

I reverse-engineered an NPU vendor's engine format (int8 weights stored as two nibble planes) to run GGUFs with no model conversion — now 1.5× faster than the vendor's own runtime

Reddit r/LocalLLaMA · 4d ago

Reverse-engineered the Axera AX8850 NPU's int8 weight format to enable direct GGUF inference in llama.cpp, achieving up to 24.5 t/s decode and 716 t/s prefill on a Raspberry Pi 5, outperforming the vendor's runtime by 1.5×.

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#performance-tuning

@ivanfioravanti: My quest for 50 tps with DeepSeek-V4-Flash on M3 Ultra using DwarfStar is continuing! - 45.7 → 51.5 tok/s (+12.6%) gree…

X AI KOLs Following · 5d ago Cached

The article details progress in achieving over 50 tokens per second inference speed for DeepSeek-V4-Flash on M3 Ultra using the DwarfStar inference engine, with improvements in performance and quality metrics.

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#performance-tuning

2x Strix Halo speed-up with an R9700

Reddit r/LocalLLaMA · 5d ago

A user shares how they achieved a 2x performance boost in AI inference by splitting a large MoE model between a Strix Halo APU and an R9700 GPU, detailing configurations and code modifications.

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#performance-tuning

Adding CPU affinity in a 24-core build machine made builds take longer

Lobsters Hottest · 2026-08-25

An article reports that enabling CPU affinity on a 24-core build machine unexpectedly slowed down builds, highlighting complexities in optimizing multi-core processing.

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#performance-tuning

I forked Ninfer 3090 and converted it to run on the CMP170HX - doubled my Qwen3.6-35B from llama.cpp

Reddit r/LocalLLaMA · 2026-08-22

A user forked the Ninfer inference engine to run on CMP170HX GPUs, doubling performance for the Qwen3.6-35B model with llama.cpp and sharing the configuration details.

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#performance-tuning

I feel like I finally graduated.

Reddit r/LocalLLaMA · 2026-08-21

The user switched from LM Studio to vLLM for serving Qwen 3.8 models, achieving 143 tokens per second and reduced GPU temperatures, referencing a helpful GitHub repository.

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#performance-tuning

Dual 3090 setup: 400 pp t/s to 1600 pp t/s on Qwen 3.6 27B... with slightly lower tps.

Reddit r/LocalLLaMA · 2026-08-06

A user on a dual RTX 3090 setup discovers that llama.cpp's --split-mode tensor runs prompt processing on CPU (~400 t/s), while switching to --split-mode layer unlocks GPU prompt processing over 1600 t/s, with only a modest drop in token generation speed.

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#performance-tuning

NVIDIA Exemplar Cloud: Lessons for Unlocking Full Performance on AI Infrastructure (12 minute read)

TLDR AI · 2026-07-31 Cached

NVIDIA shares debugging lessons from its Exemplar Cloud program, detailing how configuration issues in SMMU power management, NUMA placement, NCCL queue-pair concurrency, and hardware defects cause 8-12% training throughput gaps on AI clusters, and how to diagnose and fix them.

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#performance-tuning

Getting the most out of MTP

Reddit r/LocalLLaMA · 2026-07-24

A guide on optimizing MTP (Multi-Token Prediction) performance by tuning n_max parameter, with benchmark results for various models like Gemma-31b and Qwen on P100 and V100 GPUs.

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#performance-tuning

My learnings from optimizing training pipeline to go from 36 steps/minute to 47 steps/minute

Reddit r/LocalLLaMA · 2026-07-21

The author shares techniques that improved training pipeline performance from 36 to 47 steps per minute.

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#performance-tuning

We scaled PgBouncer to 4x throughput

Hacker News Top · 2026-07-11 Cached

ClickHouse Managed Postgres scales PgBouncer to 4x throughput by running a fleet of processes with SO_REUSEPORT, enabling multi-core utilization and solving cancellation forwarding via peering.

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#performance-tuning

Tune Code Before Your Garbage Collector

Hacker News Top · 2026-07-08 Cached

Benchmarking shows that optimizing Java code (e.g., reducing SLF4J logging) has a far greater impact on latency than choosing a garbage collector, especially at high percentiles.

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#performance-tuning

@SaitoWu: https://x.com/SaitoWu/status/2069076084495438186

X AI KOLs Timeline · 2026-06-22 Cached

This article describes using the Codex AI agent to automatically migrate terminal shell configuration from Oh My Zsh to Zinit + Starship + Rust toolchain, demonstrating the AI's ability to perform engineering steps such as backup, key isolation, and performance analysis, ultimately achieving an order-of-magnitude improvement in startup speed.

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#performance-tuning

@charles_irl: Tried to squeeze the most important bits about the entire stack for cloud deployment of transformer inference, from app…

X AI KOLs Following · 2026-06-10 Cached

This article provides a comprehensive overview of the complete technology stack for cloud deployment of Transformer inference, covering application scenarios, workload definition, models, inference engines, hardware, observability, and performance optimization, along with future trends.

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#performance-tuning

Qwen 3.6-35B-A3B with 977 tk/s prompt processing and 262k context window on Intel Arc B70 Pro

Reddit r/LocalLLaMA · 2026-06-02 Cached

This article describes how to use the SYCL backend with llama.cpp to achieve over 60 tokens per second on the Qwen 3.6-35B-A3B model using an Intel Arc Pro B70 GPU, with the entire model and KV cache in VRAM.

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