February 2023 ~ World Job & News

New top story on Hacker News: Ask HN: Worth it to buy 4x Nvidia Tesla K40 for AI?

Ask HN: Worth it to buy 4x Nvidia Tesla K40 for AI?
13 by speedylight | 6 comments on Hacker News.
I saw a post on a local market place that’s selling a complete system with 4 Tesla K40s 12 GBs VRAM w/ passive cooling for $400. The post description said that the system was intended to be used for training AI models, which is what I want to use it for… nothing too serious I am mostly still learning here. The cards themselves were released on 2013 and would have a combined cuda cores of 12,928 if I’m counting the 5th video card for a monitor (GTX 1660) Here are the complete specs from the post description… from a dollar value of all these parts, I’m not really losing any money… I just don’t have good enough intuition to see if this system is worth it to learn practice modern day AI. Specs: Motherboard: MSI MAG Z390 Tomahawk gaming 9th generation with dual Ethernet ports for wiring with other servers, and max speed 4400 MHz in overclock mode. CPU: Intel Core i5-9400f @4.10 GHz x 6 cores (overclock mode). RAM: 64 GB (4x16) DDR4 max speed 3600 MHz. Storage: One m.2 NVMe SSD 256 GB (for operating system) + Two 3 TB Hard Disk Drive (for data storage) Gaming Display Support: 1 GTX 1660 Super graphic card with 6 GB memory and 1,408 cuda cores, supporting max 3 monitors at the same time. Bus max transfer speed 8.0 GB/s (gen3 mode). AI Deep Learning: 4 Tesla K40 AI accelerators each with 12 GB memory and 2,880 cuda cores, dedicating to machine or deep learning, Bus max transfer speed 8.0 GB/s (gen3 mode) each. Power supply safety: One 700 W PSU dedicated to the motherboard and the GTX 1660 monitor GPU. Another 1,000 W PSU dedicated to the Tesla K40 AI accelerators. CPU Cooling: Cooler Master liquid cooler with LED light control. AI Accelerator Cooling: 4 cooling fans at front and 3 cooling fans at back. Structure: Open frame of high strength Al alloy to safeguard your system in an intensive working environment. Power switch: Big button switch with 5 ft flexible extension cable, and LED indicator for hard drive.

New top story on Hacker News: Ask HN: What are these strange random strings spamming my blog?

Ask HN: What are these strange random strings spamming my blog?
16 by the-mitr | 9 comments on Hacker News.
I have a wordpress blog, and recently I discovered that there are several spam comments daily which have seemingly random strings in the content. The comments don't have any other (human readable) links, which are usually present in other spam comments. Can someone explain what is the point of such random strings? Do they mean/represent anything? Some example of spam comments https://ift.tt/4w5tHUf

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