Author Archives: tim

Ubuntu 22.04 VNC stops working

Posted on April 1, 2023 by tim

My Ubuntu 22.04 virtual machine has been constantly turning off (crashing?) the VNC server. This is the VNC server that is built-in under Settings -> Sharing -> Remote Desktop -> Enable Legacy VNC Protocol. One way to restart the VNC … Continue reading →

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Kaggle, JSON, Python, and pandas

Posted on March 17, 2023 by tim

While looking at various datasets from kaggle to do some experiments with Python and graph visualization with networkx, the arXiv dataset caught my attention. It has a (relatively) simple schema – authors, papers, and categories. It is also huge – … Continue reading →

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Vue.js 2 versus 3

Posted on November 22, 2022 by tim

As of this post creation, Vue.js version 3 is available, and is “being promoted” over version 2. For example, the default “npm install -g @vue/cli” install will use Vue 3.2.41 by default. Don’t use version 3 at this time. The … Continue reading →

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Benchmark Disks NVMe vs SSD SATA vs HDD SATA

Posted on September 22, 2022 by tim

Benchmarked with Samsung Magician Device Seq ReadMB/s Seq WriteMB/s Random ReadIOPS Random WriteIOPS Samsung 980 Pro1TB NVMe 6920 5174 984130 297607 Samsung 980 Pro 2TB NVMe 7007 5240 1053222 924072 Samsung 980 Pro 2TB NVMewhen plugged into a PCIe 4.0 … Continue reading →

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Core i5 Update

Posted on August 21, 2022 by tim

This is a rebuild of the Core i5 Sandy Bridge Build machine. This machine also started spontaneously shutting off, have BSOD and freeze events. (Just like what caused the Core i5-10400 rebuild, previously). The CPU, motherboard and RAM were changed … Continue reading →

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HP Workstation

Posted on May 7, 2022 by tim

The goal of this machine to experiment with mid-range video editing and/or be a monster Virtual Machine Server. It was refurbished, from PC Server Parts Certified Refurbished. It kept going in and out of stock. It arrived in a big … Continue reading →

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Amazon S3 ETag Advanced Information

Posted on April 10, 2022 by tim

You are probably here because you looked at one of your S3 object’s ETag, and it had a dash character (“-“) in it. Most of your other ETag values are simple and correct md5sum hashes. But this one is weird. … Continue reading →

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Dell 3020 SFF

Posted on February 19, 2022 by tim

The goal of this machine was to buy a complete (monitor included) machine for less than $300, taxes and shipping included. It was refurbished, from Blair Technology, “on sale” from $480. It arrived in a big box that contained two … Continue reading →

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ASUS ROG

Posted on January 6, 2022 by tim

This is a prebuilt machine purchase. Asus Model G15CE-B9. (Price comparisons: newegg is selling it for $1,944 via Coldriver20; amazon is selling it for $1,815 via J-Tech Digital). Some facts on the CPU: it is currently #202 on PassMark [21,574, … Continue reading →

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Video Card Relative Benchmarks

Posted on November 23, 2021 by tim

Name Bench mark CUDA cores Tensor cores Notes RTX 4090 ? 16,384 ? 24GB GDDR6X $1600 2022/Sep RTX 4080 ? 9,728 304 16GB GDDR6X $1200 2022/Sep RTX 4080 ? 7,680 240 12B GDDR6X $900 2022/Sep RTX 3090Ti 29,342 10,752 336 … Continue reading →

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