Author Archives: tim

compute_total_loss

Posted on May 2, 2023 by tim

You’re here because you can’t get the unit tests for the Coursera Improving Deep Neural Networks course, Week 3, exercise number 1, to pass. You are trying to correctly implement def compute_total_loss(logits, labels): And the unit test keeps failing with … Continue reading →

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Teraflops Comparison

Posted on April 21, 2023 by tim

Documenting some various GPU hardware Name TFLOPssingle precision TFLOPStensor perf (FP16) TFLOPS(FP16-Sparse) Tensorcores CUDA cores RAM RTX 3080Ti 34.1 136 273 320 10,240 12 GB V100 (specs) 14 112 640 5,120 16 GB RTX3070 20.31 184 5,888 8 GB GTX … Continue reading →

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AWS EC2 GPU instance comparison

Posted on April 17, 2023 by tim

These are the results from running the ml-style-transfer project on three different AWS EC2 instance types. Instance Name $Cost/hour 250 epochs 2,500 epochs 50,000 epochs p3.2xlarge $3.06 14s$0.0119 55s$0.0468 928s$0.7888 t2.large $0.093 849s$0.0219 14,676s$0.3791 293,520s(extrapolated)$7.5826 c5.4xlarge $0.68 221s$0.0417 2,152s$0.4065 43,040(extrapolated)$8.1298 … Continue reading →

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Read, Do, Aha

Posted on April 8, 2023 by tim

This is a variation of “Be, Do, Have” (“Be, Do Have” == Be a photographer, Do take a bunch of photos, and then Have/Buy expensive equipment). It records my recent epiphany in Machine Learning. This variation is “Read, Do, Aha”. … Continue reading →

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Another Dell SFF

Posted on April 2, 2023 by tim

The goal of this machine was, well, it was basically too inexpensive to pass up. It was refurbished, from SJ Computers LLC. It arrived in a box that used the standard “conform to interior” expanding foam, and was very well … Continue reading →

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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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