Technical blog about Infrastructure, Kubernetes, AI, and more.https://blog.otama-playground.com/en-ushttps://blog.otama-playground.com/en/posts/20260523/202605231800/https://blog.otama-playground.com/en/posts/20260523/202605231800/Running llama.cpp on my k3s + AMD GPU cluster kept hitting memory access faults. The culprit: a bug in MES firmware 0x83 shipped with amdgpu-dkms-firmware.Sat, 23 May 2026 00:00:00 GMTKubernetesHomelabAMDROCmGPULLMlemonadefirmwarehttps://blog.otama-playground.com/en/posts/20260523/202605231900/https://blog.otama-playground.com/en/posts/20260523/202605231900/I set up Strix Halo as a k3s worker via Incus VM + VFIO, then hit a wall: once the GPU enters a dirty state, recovery is impossible without bare metal.Sat, 23 May 2026 00:00:00 GMTKubernetesHomelabAMDGPUIncusVFIOROCmk3shttps://blog.otama-playground.com/en/posts/20260523/202605232000/https://blog.otama-playground.com/en/posts/20260523/202605232000/device-plugin gives the GPU to one Pod at a time. Here's why I switched to DRA on k3s, and three Strix Halo-specific issues I had to patch around.Sat, 23 May 2026 00:00:00 GMTKubernetesAMDGPUDRAROCmk3sHomelabhttps://blog.otama-playground.com/en/posts/20260510/202605101200/https://blog.otama-playground.com/en/posts/20260510/202605101200/How I joined GMKtec EVO-X2 (Ryzen AI MAX+ 395) to my k3s cluster as a GPU node via Incus VFIO, covering APU-specific passthrough gotchas.Sun, 10 May 2026 00:00:00 GMTKubernetesHomelabAMDROCmIncusGPUVFIOComfyUIhttps://blog.otama-playground.com/en/posts/20260505/202605050020/https://blog.otama-playground.com/en/posts/20260505/202605050020/Migrating from MicroK8s to K3s. Real-world insights on infrastructure rebuilding, from an Ubuntu 26.04 twist to Kubeconfig traps and safe TLS switching.Tue, 05 May 2026 00:00:00 GMTKubernetesK3sMicroK8sHomelabGitOpsArgo CDhttps://blog.otama-playground.com/en/posts/20260505/202605051846/https://blog.otama-playground.com/en/posts/20260505/202605051846/How I built a Discord BOT in Go to securely interact with my private homelab server without exposing it to the internet.Tue, 05 May 2026 00:00:00 GMTDiscordGoKubernetesHomelabhttps://blog.otama-playground.com/en/posts/20260503/202605031900/https://blog.otama-playground.com/en/posts/20260503/202605031900/How I built a self-healing, automated refactoring pipeline using Codex's subscription capacity and Temporal on a home Kubernetes cluster.Sun, 03 May 2026 00:00:00 GMTCodexTemporalKubernetesAutomationRefactoringLLMhttps://blog.otama-playground.com/en/posts/20260430/202604300018/https://blog.otama-playground.com/en/posts/20260430/202604300018/Implement popular post rankings on Astro static sites using GA4 data. Covers build-time fetching, content integrity checks, and CI fallback strategies.Thu, 30 Apr 2026 00:00:00 GMTAstroGA4SSGAutomationhttps://blog.otama-playground.com/en/posts/20260422/202604220034/https://blog.otama-playground.com/en/posts/20260422/202604220034/Breaking free from 'just add more resources.' From Amdahl's Law, USL, and queuing theory equations to practical capacity planning based on empirical analysis.Wed, 22 Apr 2026 00:00:00 GMTPerformanceBook ReviewModelingSystems Engineeringhttps://blog.otama-playground.com/en/posts/20260421/202604210102/https://blog.otama-playground.com/en/posts/20260421/202604210102/Stop tuning by guesswork. A cheat sheet on the three legendary Linux observability tools (perf, Ftrace, BPF) for safe and surgical performance analysis.Tue, 21 Apr 2026 00:00:00 GMTPerformanceBook ReviewObservabilitySystems EngineeringBPFhttps://blog.otama-playground.com/en/posts/20260420/202604200056/https://blog.otama-playground.com/en/posts/20260420/202604200056/Moving away from guesswork tuning. From crisis tool prep to /proc secrets, kprobes/uprobes, and PMCs—here's how performance tools really work.Mon, 20 Apr 2026 00:00:00 GMTPerformanceBook ReviewObservabilitySystems Engineeringhttps://blog.otama-playground.com/en/posts/20260419/202604190046/https://blog.otama-playground.com/en/posts/20260419/202604190046/Don't be fooled by IOPS or average latency! A guide to virtual disk traps, bimodal distributions, and hunting mysterious I/O with biostacks.Sun, 19 Apr 2026 00:00:00 GMTPerformanceBook ReviewDiskSystems Engineeringhttps://blog.otama-playground.com/en/posts/20260418/202604180039/https://blog.otama-playground.com/en/posts/20260418/202604180039/Is the disk actually slow? A cheat sheet on logical vs physical I/O gap, cache traps, VFS latency, and benchmark pitfalls.Sat, 18 Apr 2026 00:00:00 GMTPerformanceBook ReviewFile SystemSystems Engineeringhttps://blog.otama-playground.com/en/posts/20260418/202604180115/https://blog.otama-playground.com/en/posts/20260418/202604180115/A review and takeaways from 'Team Geek'. From HRT principles to dealing with poisonous people, here is the mindset needed to build great engineering teams.Sat, 18 Apr 2026 00:00:00 GMTBook ReviewTeam ManagementEngineering Culturehttps://blog.otama-playground.com/en/posts/20260417/202604170010/https://blog.otama-playground.com/en/posts/20260417/202604170010/Graduating from 'just run tcpdump'. A cheat sheet covering TTFB traps, TCP backlog drops, TIME_WAIT port exhaustion, and tracking down true network latency.Fri, 17 Apr 2026 00:00:00 GMTPerformanceBook ReviewNetworkSystems Engineeringhttps://blog.otama-playground.com/en/posts/20260416/202604160236/https://blog.otama-playground.com/en/posts/20260416/202604160236/Why allocated isn't consumed. A cheat sheet on demand paging, the horrors of swapping, allocators, and profiling real memory performance.Thu, 16 Apr 2026 00:00:00 GMTPerformanceBook ReviewMemorySystems Engineeringhttps://blog.otama-playground.com/en/posts/20260415/202604150222/https://blog.otama-playground.com/en/posts/20260415/202604150222/What happens behind 100% CPU usage? A skim-friendly cheat sheet covering run queues, context switching, IPC, and profiling tricks.Wed, 15 Apr 2026 00:00:00 GMTPerformanceBook ReviewCPUSystems Engineeringhttps://blog.otama-playground.com/en/posts/20260415/202604152347/https://blog.otama-playground.com/en/posts/20260415/202604152347/Insights from 'The Software Developer's Career Handbook' on shifting to management, mastering meetings, and surviving company crises as an engineer.Wed, 15 Apr 2026 00:00:00 GMTCareerManagementReviewhttps://blog.otama-playground.com/en/posts/20260414/202604140205/https://blog.otama-playground.com/en/posts/20260414/202604140205/Why are system calls slow? What is %si? A skim-friendly cheat sheet for essential OS and kernel internals to survive performance analysis.Tue, 14 Apr 2026 00:00:00 GMTPerformanceBook ReviewLinuxSystems Engineeringhttps://blog.otama-playground.com/en/posts/20260413/202604130042/https://blog.otama-playground.com/en/posts/20260413/202604130042/Diagnose elusive cloud performance traps, Noisy Neighbor effects, and container CPU throttling with this Chapter 11 skim-friendly cheat sheet.Mon, 13 Apr 2026 00:00:00 GMTPerformanceBook ReviewCloud ComputingSystems Engineeringhttps://blog.otama-playground.com/en/posts/20260412/202604121925/https://blog.otama-playground.com/en/posts/20260412/202604121925/A guide to building a disposable remote dev environment on homelab Kubernetes with Coder to keep your PC clean, and its relevance in the AI agent era.Sun, 12 Apr 2026 00:00:00 GMTKubernetesCoderHomelabAIhttps://blog.otama-playground.com/en/posts/20260412/202604122006/https://blog.otama-playground.com/en/posts/20260412/202604122006/Pragmatic homelab backups using TrueNAS and Google Drive. A 3-tier storage architecture using Cloud Sync PUSH, prioritizing cost over strict 3-2-1 rules.Sun, 12 Apr 2026 00:00:00 GMTTrueNASBackupGoogle DriveHomelabhttps://blog.otama-playground.com/en/posts/20260412/202604122305/https://blog.otama-playground.com/en/posts/20260412/202604122305/Benchmarking results are famously misleading. Here are the critical traps you must avoid when evaluating system changes.Sun, 12 Apr 2026 00:00:00 GMTPerformanceBook ReviewSystems Engineeringhttps://blog.otama-playground.com/en/posts/20260411/202604112052/https://blog.otama-playground.com/en/posts/20260411/202604112052/Application analysis yields massive gains. Here are practical techniques and profiling pitfalls from Chapter 5, organized into a cheat sheet.Sat, 11 Apr 2026 00:00:00 GMTPerformanceBook ReviewSystems Engineeringhttps://blog.otama-playground.com/en/posts/20260410/202604101821/https://blog.otama-playground.com/en/posts/20260410/202604101821/A skim-friendly summary of the key concepts and pitfalls from Chapter 2 (Methodology) of 'Systems Performance, 2nd Edition'.Fri, 10 Apr 2026 00:00:00 GMTPerformanceBook ReviewSystems Engineeringhttps://blog.otama-playground.com/en/posts/20260328/202603281739/https://blog.otama-playground.com/en/posts/20260328/202603281739/A remote worker's review of VR fitness with Quest 3.Sat, 28 Mar 2026 00:00:00 GMTVR FitnessMeta Quest 3ReviewRemote Workhttps://blog.otama-playground.com/en/posts/20260321/202603210153/https://blog.otama-playground.com/en/posts/20260321/202603210153/Ditch iPad's battery and OS limits. Build a long-term study setup using Wacom One 14 and ThunderboltEX 4. Here is my hardware and dual-monitor workflow guide.Sat, 21 Mar 2026 00:00:00 GMTReviewWacomThunderboltStudyhttps://blog.otama-playground.com/en/posts/20260301/202603011832/https://blog.otama-playground.com/en/posts/20260301/202603011832/Migrating homelab from VMs to Incus (LXC) + K3s. Solve MicroK8s challenges and set up optimized container orchestration with our step-by-step Incus guide.Sun, 01 Mar 2026 00:00:00 GMTKubernetesContainerHomelabMigrationInfrastructurehttps://blog.otama-playground.com/en/posts/20260211/202602111210/https://blog.otama-playground.com/en/posts/20260211/202602111210/Useful life-or-death negotiation tactics from the Bubble era. A review of '90% of Persuasion is Rephrasing' from a socially awkward perspective.Wed, 11 Feb 2026 00:00:00 GMTBooksCommunicationCareer & Lifehttps://blog.otama-playground.com/en/posts/20260210/202602100130/https://blog.otama-playground.com/en/posts/20260210/202602100130/A review of 'The Power of Listening' by Mihiro Matsuda. Practical advice for those who struggle with conversation and social anxiety.Tue, 10 Feb 2026 00:00:00 GMTCareer & LifeBooksCommunicationhttps://blog.otama-playground.com/en/posts/20260204/202602040045/https://blog.otama-playground.com/en/posts/20260204/202602040045/Exploring 'The Wall of Fools' where the brain rejects what it can't understand. We analyze how this connects to modern echo chambers.Wed, 04 Feb 2026 00:00:00 GMTBooksCareer & Lifehttps://blog.otama-playground.com/en/posts/20260202/202602022325/https://blog.otama-playground.com/en/posts/20260202/202602022325/A debugging story of Beszel and Pocket ID integration. Uncovering the trap of 'silent' standardized output and the true culprit: unverified email addresses.Mon, 02 Feb 2026 00:00:00 GMTBeszelSecurityTroubleshootinghttps://blog.otama-playground.com/en/posts/20260201/202602010012/https://blog.otama-playground.com/en/posts/20260201/202602010012/Migrated from Authentik to lightweight PocketID. Exploring passwordless Passkeys and OIDC integration patterns on Kubernetes.Sun, 01 Feb 2026 00:00:00 GMTHomelabKubernetesSecurityhttps://blog.otama-playground.com/en/posts/20260201/202602011220/https://blog.otama-playground.com/en/posts/20260201/202602011220/Migration from Ingress Nginx to Traefik v3 and Gateway API. Covers Helm setup, the shift to HTTPRoute, and why Gateway API is preferred over IngressRoute.Sun, 01 Feb 2026 00:00:00 GMTKubernetesTraefikGateway APIHomelabhttps://blog.otama-playground.com/en/posts/20260201/202602011824/https://blog.otama-playground.com/en/posts/20260201/202602011824/Setting up lightweight Proxy Authentication on Kubernetes with Tinyauth and Pocket ID. Covers OIDC configuration and Middleware placement strategies.Sun, 01 Feb 2026 00:00:00 GMTSecurityKuberneteshttps://blog.otama-playground.com/en/posts/20260126/202601260210/https://blog.otama-playground.com/en/posts/20260126/202601260210/Boost your career with practical evaluation hacking. Learn strategic goal-setting, salary negotiation tactics, and the dark side of corporate politics.Mon, 26 Jan 2026 00:00:00 GMTBooksCareer & Lifehttps://blog.otama-playground.com/en/posts/20260125/202601252027/https://blog.otama-playground.com/en/posts/20260125/202601252027/Convert EPUBs to Markdown or PDF securely with 'epub2everything'. 100% client-side, browser-based processing optimized for privacy and LLM inputs.Sun, 25 Jan 2026 00:00:00 GMTEPUBOSSPrivacyMarkdownNotebookLMProductivityhttps://blog.otama-playground.com/en/posts/20260118/202601181500/https://blog.otama-playground.com/en/posts/20260118/202601181500/Exploring Nudge, Sludge, and the self-helping 'Snudge'. Key insights for smart decision-making from the behavioral economics classic.Sun, 18 Jan 2026 00:00:00 GMTCareer & Lifehttps://blog.otama-playground.com/en/posts/20260117/202601172047/https://blog.otama-playground.com/en/posts/20260117/202601172047/Should you fix messy code immediately? Insights from 'Tidy First?' on applying economic rationality to the dilemma of refactoring vs. delivery.Sat, 17 Jan 2026 00:00:00 GMTBooksArchitectureRefactoringhttps://blog.otama-playground.com/en/posts/20260117/202601172140/https://blog.otama-playground.com/en/posts/20260117/202601172140/Reading notes on 'How Google Works'. Organizing principles for creating environments where smart creatives can thrive and practice starting tomorrow.Sat, 17 Jan 2026 00:00:00 GMTManagementCulturehttps://blog.otama-playground.com/en/posts/20260117/202601172355/https://blog.otama-playground.com/en/posts/20260117/202601172355/Reading notes on 'The Crowd: A Study of the Popular Mind'. How a century-old classic brilliantly predicts modern social media and echo chambers.Sat, 17 Jan 2026 00:00:00 GMTBooksCareer & LifeSNShttps://blog.otama-playground.com/en/posts/20260115/202601152230/https://blog.otama-playground.com/en/posts/20260115/202601152230/A manifesto of a home server packed with my 'favorites'. Introducing a suite of applications to hack life with code.Thu, 15 Jan 2026 00:00:00 GMTHomelabKuberneteshttps://blog.otama-playground.com/en/posts/20260111/202601111500/https://blog.otama-playground.com/en/posts/20260111/202601111500/A summary of the migration process from Sakura Rental Server + WordPress to Astro + Cloudflare Pages, including pitfalls and final thoughts.Sun, 11 Jan 2026 00:00:00 GMTAstroCloudflareWordPressGitHubMigrationhttps://blog.otama-playground.com/en/posts/20260111/202601111700/https://blog.otama-playground.com/en/posts/20260111/202601111700/A personal story of a cough misdiagnosed as a cold, later found to be an allergy. Learn about the importance of second opinions and "debugging" your own health.Sun, 11 Jan 2026 00:00:00 GMTCareer & Lifehttps://blog.otama-playground.com/en/posts/20260111/202601111600/https://blog.otama-playground.com/en/posts/20260111/202601111600/Managing Astro content and system in separate repos linked via Git Submodule. Exploring DDD benefits, disadvantages, and Cloudflare Pages setup.Sun, 11 Jan 2026 00:00:00 GMTGitAstroCloudflarehttps://blog.otama-playground.com/en/posts/20260111/202601112100/https://blog.otama-playground.com/en/posts/20260111/202601112100/A deep dive into my "overkill" home network and K8s setup. Featuring YAMAHA RTX830, Incus, MicroK8s, and automated DNS/SSL workflows.Sun, 11 Jan 2026 00:00:00 GMTNetworkHomelabKubernetesContainerhttps://blog.otama-playground.com/en/posts/20250609/202506090216/https://blog.otama-playground.com/en/posts/20250609/202506090216/Learn how to connect Incus instances directly to the host network. Essential for cluster nodes needing external network accessibility.Mon, 09 Jun 2025 00:00:00 GMTContainerhttps://blog.otama-playground.com/en/posts/20250608/202506081645/https://blog.otama-playground.com/en/posts/20250608/202506081645/Create instances on Incus (LXD successor) with a Bridge network using the GUI. A step-by-step guide from network creation to instance initialization.Sun, 08 Jun 2025 00:00:00 GMTBridge NetworkContainerHomelabInfrastructureUbuntuProxmoxhttps://blog.otama-playground.com/en/posts/20250527/202505270111/https://blog.otama-playground.com/en/posts/20250527/202505270111/Master Incus cluster configuration in this step-by-step guide. Learn how to add nodes, manage database roles, and verify cluster status via the GUI.Tue, 27 May 2025 00:00:00 GMTKubernetesContainerHigh AvailabilityHomelabInfrastructureProxmoxhttps://blog.otama-playground.com/en/posts/20250526/202505260047/https://blog.otama-playground.com/en/posts/20250526/202505260047/Learn to install and initialize 'Incus' (LXD fork) on Ubuntu 24.04 LTS. This guide covers Zabbly repo setup, initial configuration, and GUI installation.Mon, 26 May 2025 00:00:00 GMTContainerUbuntuInfrastructureProxmoxhttps://blog.otama-playground.com/en/posts/20250512/202505120101/https://blog.otama-playground.com/en/posts/20250512/202505120101/Had some stumbling points when trying to connect ArgoCD and GitHub via SSH... Loosely summarized the memo from that time.Mon, 12 May 2025 00:00:00 GMTKubernetesGitHubhttps://blog.otama-playground.com/en/posts/20250511/202505111623/https://blog.otama-playground.com/en/posts/20250511/202505111623/Automate Kubernetes deployment with Proxmox and cloud-init. This guide provides a reusable template to build highly reproducible environments in minutes.Sun, 11 May 2025 00:00:00 GMTAutomationCloud-initHomelabInfrastructureInfrastructure as CodeKubernetesProxmoxhttps://blog.otama-playground.com/en/posts/20250511/202505112005/https://blog.otama-playground.com/en/posts/20250511/202505112005/A beginner's guide to deploying ArgoCD via CLI and Helm and accessing the GUI from a local environment in Kubernetes.Sun, 11 May 2025 00:00:00 GMTKubernetesInfrastructurehttps://blog.otama-playground.com/en/posts/20250510/202505102216/https://blog.otama-playground.com/en/posts/20250510/202505102216/Steps to create cloud-init compatible template VMs using Ubuntu 24.04 LTS on Proxmox. Highlights GUI vs config and common stumbling points.Sat, 10 May 2025 00:00:00 GMTCloud-initProxmoxhttps://blog.otama-playground.com/en/posts/20250507/202505070018/https://blog.otama-playground.com/en/posts/20250507/202505070018/Guide to building a professional home Kubernetes cluster on Proxmox and Ubuntu using kubeadm, CRI-O, and Cilium (CNI) with kube-proxy replacement.Wed, 07 May 2025 00:00:00 GMTKubernetesContainerHomelabInfrastructureProxmoxhttps://blog.otama-playground.com/en/posts/20250507/202505070124/https://blog.otama-playground.com/en/posts/20250507/202505070124/Expand your Kubernetes cluster by adding worker nodes with kubeadm on Ubuntu. A step-by-step guide from join command generation to node role labeling.Wed, 07 May 2025 00:00:00 GMTKubernetesHomelabInfrastructurehttps://blog.otama-playground.com/en/posts/20250506/202505061420/https://blog.otama-playground.com/en/posts/20250506/202505061420/A beginner's guide to setting a static IP address on your home network. Learn how to fix IPs via router DHCP settings or device configuration for Ubuntu Server.Tue, 06 May 2025 00:00:00 GMTNetworkStatic IPDHCPUbuntuNetplanHomelabInfrastructureNetworking Basicshttps://blog.otama-playground.com/en/posts/20250505/202505052003/https://blog.otama-playground.com/en/posts/20250505/202505052003/Learn how to build a secure VPN using Yamaha RTX830 and Netvolante DNS without a static IP. Includes detailed connection settings for iPhone.Mon, 05 May 2025 00:00:00 GMTNetworkhttps://blog.otama-playground.com/en/posts/20250505/202505052300/https://blog.otama-playground.com/en/posts/20250505/202505052300/Guide to secure home server management using SSH and Public Key Authentication. Learn how to generate keys, disable password logins, and set up shortcuts.Mon, 05 May 2025 00:00:00 GMTHomelabInfrastructureNetworkPublic Key AuthenticationPublic Key InfrastructureRemote AccessSSHSecurityServer ManagementUbuntuhttps://blog.otama-playground.com/en/posts/20250430/202504300124/https://blog.otama-playground.com/en/posts/20250430/202504300124/Generate high-quality AI videos on low-spec PCs with FramePack. This guide covers the official demo setup, requirements, and generation results on 6GB VRAM.Wed, 30 Apr 2025 00:00:00 GMTAIGenerative AIFramePackLow VRAMMachine LearningStable DiffusionVideo Generationhttps://blog.otama-playground.com/en/posts/20250427/202504271712/https://blog.otama-playground.com/en/posts/20250427/202504271712/Improving home network performance and security with Yamaha equipment. Includes equipment lists and workflow details for similar home setups.Sun, 27 Apr 2025 00:00:00 GMTNetworkhttps://blog.otama-playground.com/en/posts/series-intro/comfyui-image-guide/https://blog.otama-playground.com/en/posts/series-intro/comfyui-image-guide/A curated link collection systematizing Stable Diffusion image generation techniques with ComfyUI, including LoRA, ControlNet, upscaling, and image editing.Sun, 27 Apr 2025 00:00:00 GMTComfyUIhttps://blog.otama-playground.com/en/posts/series-intro/comfyui-video-guide/https://blog.otama-playground.com/en/posts/series-intro/comfyui-video-guide/A curated link collection of Stable Diffusion video generation techniques using ComfyUI, covering AnimateDiff, SVD, RIFE, and vid2vid.Sun, 27 Apr 2025 00:00:00 GMTComfyUIhttps://blog.otama-playground.com/en/posts/series-intro/portfolio-construction-guide/https://blog.otama-playground.com/en/posts/series-intro/portfolio-construction-guide/A curated link collection of investment portfolio model articles, systematically covering asset allocation, expected return calculation, and risk management.Sun, 27 Apr 2025 00:00:00 GMTPythonStudy Noteshttps://blog.otama-playground.com/en/posts/series-intro/stable-diffusion-survey/https://blog.otama-playground.com/en/posts/series-intro/stable-diffusion-survey/A curated link collection of Stable Diffusion paper explanations, covering foundational models to applied techniques for image and video generation.Sun, 27 Apr 2025 00:00:00 GMTStudy Noteshttps://blog.otama-playground.com/en/posts/20250426/202504261843/https://blog.otama-playground.com/en/posts/20250426/202504261843/Motivation and process of migrating from Hatena Blog to self-hosted WordPress on Cloudflare. Explore domain transfer, costs, and achieving operational freedom.Sat, 26 Apr 2025 00:00:00 GMTBlog MigrationCloudflareDomain TransferHatena BlogInfrastructureHomelabWeb DevelopmentWordPresshttps://blog.otama-playground.com/en/posts/20240901/1725186131/https://blog.otama-playground.com/en/posts/20240901/1725186131/Automatically generate masks and perform inpainting with ComfyUI and Impact Pack. Learn how to extract people and objects from images efficiently.Sun, 01 Sep 2024 00:00:00 GMTComfyUIhttps://blog.otama-playground.com/en/posts/20240828/1724856747/https://blog.otama-playground.com/en/posts/20240828/1724856747/Compare Latent, ControlNet, and IPAdapter for i2i generation in Stable Diffusion. Discover the best method for composition and reproducibility.Wed, 28 Aug 2024 00:00:00 GMTGenerative AIComfyUIComparisonImage GenerationIPAdapterStable Diffusionhttps://blog.otama-playground.com/en/posts/20240821/1724169667/https://blog.otama-playground.com/en/posts/20240821/1724169667/Learn how to set up WordPress locally using Docker. This guide covers MySQL connection, network settings, and container cleanup for a seamless dev experience.Wed, 21 Aug 2024 00:00:00 GMTWordPressContainerMySQLhttps://blog.otama-playground.com/en/posts/20240820/1724087820/https://blog.otama-playground.com/en/posts/20240820/1724087820/Master fundamental analysis to make informed investment decisions. This guide covers key indicators like PER, PBR, ROE, and qualitative evaluation factors.Tue, 20 Aug 2024 00:00:00 GMTCorporate ValueFinanceFinancial RatiosFundamental AnalysisPortfolio ManagementPBRPERROERatio AnalysisStock MarketStock Valuationhttps://blog.otama-playground.com/en/posts/20240818/1723908021/https://blog.otama-playground.com/en/posts/20240818/1723908021/Overview of the open-source image generation model Flux.1 and how to use it with ComfyUI. Ideal for those looking to try Flux.1 locally.Sun, 18 Aug 2024 00:00:00 GMTComfyUIhttps://blog.otama-playground.com/en/posts/20240818/1723948471/https://blog.otama-playground.com/en/posts/20240818/1723948471/Calculate factor model beta with Python using regression analysis. Fetch TOPIX and ETF data to compute stock exposure and specific risk components.Sun, 18 Aug 2024 00:00:00 GMTData ScienceQuantitative AnalysisFinancePythonStock Markethttps://blog.otama-playground.com/en/posts/20240818/1723977061/https://blog.otama-playground.com/en/posts/20240818/1723977061/A guide to using LoRA with the Flux.1 model in ComfyUI, including setup steps and a compilation of generation results.Sun, 18 Aug 2024 00:00:00 GMTComfyUIhttps://blog.otama-playground.com/en/posts/20240817/1723876799/https://blog.otama-playground.com/en/posts/20240817/1723876799/Explore sector analysis using correlation coefficients and Python. Includes practical concepts and results calculated from actual market data.Sat, 17 Aug 2024 00:00:00 GMTPythonhttps://blog.otama-playground.com/en/posts/20240721/1721506027/https://blog.otama-playground.com/en/posts/20240721/1721506027/Master RIFE Frame Interpolation in ComfyUI for ultra-smooth AI videos. Learn to configure RIFE VFI nodes and optimize fps multipliers for high-quality results.Sun, 21 Jul 2024 00:00:00 GMTComfyUIVideo GenerationStable Diffusionhttps://blog.otama-playground.com/en/posts/20240721/1721562840/https://blog.otama-playground.com/en/posts/20240721/1721562840/Summary of LoRA models for faster inference in Stable Diffusion. Comparing Turbo, Lightning, LCM, and Hyper methods for optimal speedup.Sun, 21 Jul 2024 00:00:00 GMTComfyUIhttps://blog.otama-playground.com/en/posts/20240720/1721468878/https://blog.otama-playground.com/en/posts/20240720/1721468878/Fix person's face using InstantID with ComfyUI. This guide covers setup, necessary models, and generating consistent faces from reference images.Sat, 20 Jul 2024 00:00:00 GMTComfyUIhttps://blog.otama-playground.com/en/posts/20240720/1721478662/https://blog.otama-playground.com/en/posts/20240720/1721478662/Fix collapsed faces in AI images with Face Detailer for ComfyUI. Learn how to install and use the Impact Pack workflow effectively for high-quality results.Sat, 20 Jul 2024 00:00:00 GMTGenerative AIComfyUIImage GenerationStable Diffusionhttps://blog.otama-playground.com/en/posts/20240717/1721223811/https://blog.otama-playground.com/en/posts/20240717/1721223811/Kolors is a StableDiffusion derivative with enhanced sentence understanding. Learn how to try Kolors with ComfyUI and view our generation results.Wed, 17 Jul 2024 00:00:00 GMTComfyUIhttps://blog.otama-playground.com/en/posts/20240715/1721038292/https://blog.otama-playground.com/en/posts/20240715/1721038292/Reproduce real-time scribble-to-image conversion locally using ComfyUI. We explain procedures, extensions, and model settings in detail.Mon, 15 Jul 2024 00:00:00 GMTAIComfyUIGenerative AIImage GenerationReal-time Generationhttps://blog.otama-playground.com/en/posts/20240715/1721053469/https://blog.otama-playground.com/en/posts/20240715/1721053469/Master real-time AI image generation using the Krita Stable Diffusion plugin. Learn how to transform simple scribbles into high-quality AI art with this guide.Mon, 15 Jul 2024 00:00:00 GMTAIGenerative AIHobbyImage GenerationLive PreviewOpen SourcePluginStable Diffusionkrita-ai-diffusionhttps://blog.otama-playground.com/en/posts/20240714/1720948404/https://blog.otama-playground.com/en/posts/20240714/1720948404/Learn to implement a Buy and Hold strategy using Backtrader in Python. This guide covers library installation, data fetching, and visualizing backtest results.Sun, 14 Jul 2024 00:00:00 GMTBacktestingBacktraderData ScienceFinancePortfolio ManagementPythonhttps://blog.otama-playground.com/en/posts/20240714/1720949588/https://blog.otama-playground.com/en/posts/20240714/1720949588/Explaining procedure to implement Rebalance strategy using Python library Backtrader, and perform backtest using data of past 10 years step by step.Sun, 14 Jul 2024 00:00:00 GMTPythonhttps://blog.otama-playground.com/en/posts/20240713/1720872266/https://blog.otama-playground.com/en/posts/20240713/1720872266/RIFE uses deep learning to improve video frame rates. This article provides a brief overview of the technology and its underlying architecture.Sat, 13 Jul 2024 00:00:00 GMTStudy Noteshttps://blog.otama-playground.com/en/posts/20240627/1719433017/https://blog.otama-playground.com/en/posts/20240627/1719433017/Learn to perform professional Vid2Vid generation with ComfyUI. This guide covers complex workflows involving AnimateDiff, ControlNet, and IPAdapter FaceID.Thu, 27 Jun 2024 00:00:00 GMTVideo GenerationComfyUIImage GenerationStable Diffusionhttps://blog.otama-playground.com/en/posts/20240619/1718804089/https://blog.otama-playground.com/en/posts/20240619/1718804089/Critical overview of VaR and CVaR for investment risk management. Learn how to evaluate and use these indices to manage potential losses effectively.Wed, 19 Jun 2024 00:00:00 GMTCVaRFinancePortfolio ManagementStudy NotesVaRhttps://blog.otama-playground.com/en/posts/20240618/1718637199/https://blog.otama-playground.com/en/posts/20240618/1718637199/Step-by-step guide to generating images with SD3 using ComfyUI. Covers model setup, workflow imports, and actual usage results.Tue, 18 Jun 2024 00:00:00 GMTComfyUIhttps://blog.otama-playground.com/en/posts/20240617/1718556551/https://blog.otama-playground.com/en/posts/20240617/1718556551/Dive into the Stable Diffusion 3 (SD3) research paper. Learn about the shift to MM-DiT architecture, new text encoders, and improvements in txt2img performance.Mon, 17 Jun 2024 00:00:00 GMTResearchDiTGenerative AIMachine LearningPaper SummaryStable DiffusionStudy Noteshttps://blog.otama-playground.com/en/posts/20240616/1718521989/https://blog.otama-playground.com/en/posts/20240616/1718521989/Install and configure ComfyUI using StabilityMatrix. We cover model management, installation steps, and shared user impressions.Sun, 16 Jun 2024 00:00:00 GMTComfyUIStability Matrixhttps://blog.otama-playground.com/en/posts/20240615/1718441963/https://blog.otama-playground.com/en/posts/20240615/1718441963/Stable Audio Open is now free for local use. This guide explains how to set up and run the official demo in your own environment.Sat, 15 Jun 2024 00:00:00 GMTAIHobbyStable AudioStable DiffusionTutorialhttps://blog.otama-playground.com/en/posts/20240614/1718299765/https://blog.otama-playground.com/en/posts/20240614/1718299765/Stream Diffusion enables high-quality real-time generation. We briefly explain the technology behind this high-speed diffusion model.Fri, 14 Jun 2024 00:00:00 GMTStudy Noteshttps://blog.otama-playground.com/en/posts/20240612/1718127188/https://blog.otama-playground.com/en/posts/20240612/1718127188/Master the Barra model for portfolio risk management. Learn about multi-factor modeling, beta calculation, and performance decomposition for smart investing.Wed, 12 Jun 2024 00:00:00 GMTBarra ModelQuantitative AnalysisFinancePortfolio ManagementStudy Noteshttps://blog.otama-playground.com/en/posts/20240611/1718112715/https://blog.otama-playground.com/en/posts/20240611/1718112715/Discover how to use ESRGAN for high-quality upscaling in ComfyUI. We compare ESRGAN vs. Hires.fix and share tips for better AI image resolution.Tue, 11 Jun 2024 00:00:00 GMTComfyUIStable DiffusionImage Generationhttps://blog.otama-playground.com/en/posts/20240610/1717947840/https://blog.otama-playground.com/en/posts/20240610/1717947840/IPAdapter adds image prompt functionality to Stable Diffusion. We explain its architecture, benefits, and impressive evaluation results.Mon, 10 Jun 2024 00:00:00 GMTStudy Noteshttps://blog.otama-playground.com/en/posts/20240610/1717954169/https://blog.otama-playground.com/en/posts/20240610/1717954169/Master Inpainting with Stable Diffusion in ComfyUI. This guide provides a workflow for masking, prompt adjustment, and adding new elements to images.Mon, 10 Jun 2024 00:00:00 GMTGenerative AIComfyUIImage EditingImage GenerationStable Diffusionhttps://blog.otama-playground.com/en/posts/20240610/1718028764/https://blog.otama-playground.com/en/posts/20240610/1718028764/Extend your images naturally with Outpainting in Stable Diffusion using ComfyUI. Learn to expand your canvas using Feathering and Padding nodes.Mon, 10 Jun 2024 00:00:00 GMTGenerative AIComfyUIImage GenerationStable Diffusionhttps://blog.otama-playground.com/en/posts/20240609/1717921905/https://blog.otama-playground.com/en/posts/20240609/1717921905/Control art style and composition freely using IPAdapter with Stable Diffusion. We introduce the specific settings and usage in ComfyUI.Sun, 09 Jun 2024 00:00:00 GMTComfyUIhttps://blog.otama-playground.com/en/posts/20240608/1717845692/https://blog.otama-playground.com/en/posts/20240608/1717845692/AnimateDiff enables video generation in SD models. We explain Domain Adapters, Motion Modules, and the mechanism for high-quality animation.Sat, 08 Jun 2024 00:00:00 GMTStudy Noteshttps://blog.otama-playground.com/en/posts/20240608/1717774934/https://blog.otama-playground.com/en/posts/20240608/1717774934/Master the Fama-French 3-Factor Model with our Python guide. Learn how market, size, and value factors drive investment returns.Sat, 08 Jun 2024 00:00:00 GMTPythonStudy NotesFinanceQuantitative Analysishttps://blog.otama-playground.com/en/posts/20240607/1717692941/https://blog.otama-playground.com/en/posts/20240607/1717692941/In this article, explaining basic concept, Merit, calculation method of Risk Parity Portfolio, and implementation method in Python.Fri, 07 Jun 2024 00:00:00 GMTFinancePortfolio ManagementPythonStudy Noteshttps://blog.otama-playground.com/en/posts/20240604/1717429642/https://blog.otama-playground.com/en/posts/20240604/1717429642/Control Stable Diffusion outputs through language vectors. We explain the mechanism for beginners and compare it with LoRA for better image control.Tue, 04 Jun 2024 00:00:00 GMTStudy Noteshttps://blog.otama-playground.com/en/posts/20240604/1717433995/https://blog.otama-playground.com/en/posts/20240604/1717433995/ControlNet enhances Stable Diffusion by enabling precise control over character postures. An introduction to its basic concepts for AI beginners.Tue, 04 Jun 2024 00:00:00 GMTStudy Noteshttps://blog.otama-playground.com/en/posts/20240604/1717509013/https://blog.otama-playground.com/en/posts/20240604/1717509013/Learn how LoRA adds small layers to large models to achieve high performance while reducing computational costs. A brief introduction to the method.Tue, 04 Jun 2024 00:00:00 GMTStudy Noteshttps://blog.otama-playground.com/en/posts/20240602/1717263594/https://blog.otama-playground.com/en/posts/20240602/1717263594/Calculate Mean-Variance Optimization and Efficient Frontiers using Python. A detailed guide covering theory and practical implementation for portfolios.Sun, 02 Jun 2024 00:00:00 GMTPythonStudy Noteshttps://blog.otama-playground.com/en/posts/20240602/1717316960/https://blog.otama-playground.com/en/posts/20240602/1717316960/Optimize asset allocation using the Black-Litterman Model. Learn to blend market data with investor views using Python and Bayesian approaches.Sun, 02 Jun 2024 00:00:00 GMTPortfolio ManagementBayesian StatisticsFinancePythonhttps://blog.otama-playground.com/en/posts/20240601/1717252764/https://blog.otama-playground.com/en/posts/20240601/1717252764/Construct optimal portfolios using Python. A step-by-step guide to calculating returns, risk, covariance, and building the Efficient Frontier.Sat, 01 Jun 2024 00:00:00 GMTPythonStudy Noteshttps://blog.otama-playground.com/en/posts/20240529/1716915450/https://blog.otama-playground.com/en/posts/20240529/1716915450/Master Textual Inversion in Stable Diffusion using ComfyUI. This guide explains how to use embeddings for goblin-style outputs and improved negative prompts.Wed, 29 May 2024 00:00:00 GMTGenerative AIComfyUICustomizationImage GenerationStable Diffusionhttps://blog.otama-playground.com/en/posts/20240529/1716994766/https://blog.otama-playground.com/en/posts/20240529/1716994766/Explore the inner workings of Stable Diffusion, from basic diffusion concepts to Latent Diffusion Models (LDM) and the theoretical process.Wed, 29 May 2024 00:00:00 GMTStudy Noteshttps://blog.otama-playground.com/en/posts/20240527/1716739267/https://blog.otama-playground.com/en/posts/20240527/1716739267/Master the Capital Asset Pricing Model (CAPM). Learn basic concepts, calculation steps, and Python implementation with yfinance for modeling.Mon, 27 May 2024 00:00:00 GMTBeta calculationCAPMFinanceQuantitative AnalysisPortfolio ManagementPythonStudy Noteshttps://blog.otama-playground.com/en/posts/20240526/1716735478/https://blog.otama-playground.com/en/posts/20240526/1716735478/Master market portfolio concepts and calculation methods for efficient asset allocation. Learn about risk diversification, benchmarks, and weight calculation.Sun, 26 May 2024 00:00:00 GMTPortfolio ManagementFinanceInvestment BasicsStudy Noteshttps://blog.otama-playground.com/en/posts/20240526/1716677010/https://blog.otama-playground.com/en/posts/20240526/1716677010/Maximize ChatGPT's potential with Custom Instructions. Learn how to automate prompts, set personas, and improve response accuracy with practical tips.Sun, 26 May 2024 00:00:00 GMTGenerative AIAI ProductivityAutomationCustom Instructionshttps://blog.otama-playground.com/en/posts/20240525/1716582870/https://blog.otama-playground.com/en/posts/20240525/1716582870/Generate videos using AnimateDiff with Stable Diffusion. We cover model roles, ComfyUI setup, and specific workflow steps for high-quality video.Sat, 25 May 2024 00:00:00 GMTComfyUIhttps://blog.otama-playground.com/en/posts/20240525/1716645218/https://blog.otama-playground.com/en/posts/20240525/1716645218/Generate images with specific poses using ControlNet in ComfyUI. We explain the architecture and provide step-by-step instructions for beginners.Sat, 25 May 2024 00:00:00 GMTComfyUIhttps://blog.otama-playground.com/en/posts/20240524/1716498000/https://blog.otama-playground.com/en/posts/20240524/1716498000/Explore Wealthfront's investment methodology. Learn about asset class selection, Black-Litterman model, risk tolerance evaluation, and rebalancing strategies.Fri, 24 May 2024 00:00:00 GMTPortfolio ManagementFinancePortfolioRobo-AdvisorStudy NotesTax Loss HarvestingWealthfronthttps://blog.otama-playground.com/en/posts/20240523/1716415200/https://blog.otama-playground.com/en/posts/20240523/1716415200/Upscale images with Hires.fix in Stable Diffusion using ComfyUI. We explain the process and merits in detail with beginner-friendly steps.Thu, 23 May 2024 00:00:00 GMTComfyUIhttps://blog.otama-playground.com/en/posts/20240521/1716231971/https://blog.otama-playground.com/en/posts/20240521/1716231971/Learn to install Stable Diffusion smoothly via standalone, comfy-cli, or manual methods. A clear guide for beginners to start with peace of mind.Tue, 21 May 2024 00:00:00 GMTComfyUIhttps://blog.otama-playground.com/en/posts/20240521/1716302574/https://blog.otama-playground.com/en/posts/20240521/1716302574/Extend Stable Diffusion models with LoRA in ComfyUI. We introduce the benefits and specific steps for beginners to start generating images easily.Tue, 21 May 2024 00:00:00 GMTComfyUIhttps://blog.otama-playground.com/en/posts/20240520/1716132597/https://blog.otama-playground.com/en/posts/20240520/1716132597/We test Stable Video Diffusion, a new technology for video generation AI, using ComfyUI. Covering technology details and generation steps.Mon, 20 May 2024 00:00:00 GMTComfyUIhttps://blog.otama-playground.com/en/posts/20240519/1716121235/https://blog.otama-playground.com/en/posts/20240519/1716121235/Learn to install and use AnimateDiff-Lightning, a lightweight and fast video generation AI. Clear steps for beginners in ComfyUI.Sun, 19 May 2024 00:00:00 GMTComfyUIhttps://blog.otama-playground.com/en/posts/20240519/1716052426/https://blog.otama-playground.com/en/posts/20240519/1716052426/Master Stable Diffusion WebUI setup with Docker. This guide covers installation steps, usage tips, and a comparison of anime-style vs realistic models.Sun, 19 May 2024 00:00:00 GMTAIGenerative AIAnime ModelContainerGPUImage GenerationRealistic ModelStable DiffusionWebUIhttps://blog.otama-playground.com/en/posts/20240518/1716035939/https://blog.otama-playground.com/en/posts/20240518/1716035939/Optimize image generation with SD-Turbo and SDXL-Turbo. This guide covers architectural overviews, Adversarial Diffusion Distillation, and local Docker setup.Sat, 18 May 2024 00:00:00 GMTContainerGenerative AIImage GenerationStable Diffusionhttps://blog.otama-playground.com/en/posts/20240518/1715964646/https://blog.otama-playground.com/en/posts/20240518/1715964646/Master Stable Video Diffusion (SVD) for high-precision video generation. This guide covers SVD technology overviews and step-by-step local setup with Docker.Sat, 18 May 2024 00:00:00 GMTContainerGenerative AIImage GenerationData ScienceStable DiffusionVideo Generation