Some new capital goods arrivedpic.twitter.com/c17pAOqclh
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Interesting. Flipping the switch disables lights *and* outlets. Possibilities: 1. Single circuit, 20A 2. One breaker switch controls two 10A circuits First possibility would be the most convenient. Unsure how to test. Need to read up on breaker notation next I think.
Helpful mutuals assure me (1) it's a single fixed 20A circuit and (2) fucking with the circuit breaker will result in literal face melting, so spent the evening playing with GPU optimization. Heat actually a major bottleneck when 3 GPUs arrayed with no space, surprising no one.
So, working around this. Earlier plan for 16x -> 1x risers for my case won't work since *all* the slots in my board are x8/x16 form factor. Instead, repurposing my pseudo-NAS box to hold one 1080, and going to kludge a different solution with a ribbon riser in my workstation.
Rearranged things a bit more, jammed one of my 1080s into the mATX rig I was using as NAS. Probably consumes ~300W full tilt, which is more than my refrigerator. Wiferobot is going to want to store perishables, so I'm renting space for it in my DM's house at $25/mo + electricity
Semi-final setup. Consumer rig, workstation, converted NAS. Calibrating now. Worried about toasting my 20A circuit and also about heat dissipation and finally about long-term fan noise irritating my cat, so workstation cards likely to be throttled Bonus: catpic.twitter.com/w7b8KE2Rxi
25cm 16x to 16x riser arrived today. Workstation final form
pic.twitter.com/j2Axf5uavW
realized I could jam another card in my consumer rig, prices have increased about 40% since I bought a couple weeks ago maybe the real play is day trading 1080s, fellas
wowza. newegg just put up some new 1080ti ftw3 on sale for $800, and they sold out in <20m
Good news, everyone! My (single) breaker tripped today during lunch and won't reset Landlord: "Do computers use a lot of power?" oh boy
Now digging around my apartment with my landlord trying to track down (i) the source of the electrical short in my unit and (ii) the source of a strange smell something like Trail's End popcorn Hoping they are not the same thing
Welp There goes my foyer ceiling for the third time in eight months
Landlord: do you actually want to try that? Electrician: fuck yeah, we're just having fun, right?
Ok SO Apparently, issue was a shorted jank-ass wire off the main circuit, probably installed 50y ago. Supplied power to outlets on a post near my breakfast bar. The outlets had 3 prongs but were not actually grounded This was the spot I had all my boxes plugged in, ofc
Going to be a little more deliberate about electricity use going forward. Having one of these things delivered tomorrow for GPU power calibration, til then going to leave the workstation off https://www.amazon.com/gp/product/B00009MDBU/ … Also so my landlord doesn't see a box with a GPU running on top
a poem, for no particular reasonhttps://genius.com/Shel-silverstein-peanut-butter-sandwich-annotated …
bit of quick computation 20A maximum instantaneous load is 2400W; maximum continuous load, 1920W turns out a continuous load runs >= *3 hours* this is actually great news for me, refrigerator turns on only intermittently and probably draws substantially less than 480W
Quick check reveals probably not vermiculite Also it was burning which seems like a contraindication
Apartment rewired today, still stuck on 20A. Landlord bought me a bottle of cheap whiskey for my troubles, though he also helped himself to a few shots of my tequilapic.twitter.com/Jkie2OgBqC
Got my Watt meter, going to do some testing. Also installed a 1080 on a Rosewill 1x riser. Mobo recognizes the card, but not showing up in Windows . . . going to try driver reinstallation. Rig pulls about 120W mostly idle, incidentallypic.twitter.com/Z2dwHAhnPI
That did it! Ordering some Thai while it benches for nicehash. Then, onto power testing. Goal will probably be to maximize power use by cards, conditional on total power use <= M M tbd, will mostly be a function of observed refrigerator and monitor draw.
Early findings: (i) i7-5820k @ 3.8GHz draws only an extra 30W when full-tilt running CryptoNight (350H/s), that's awesome (ii) running a 1080TI FTW3 @ 100% pulls an extra 269W, about spec. Every 10% reduction in power target reduces draw by about 30W. Will test performace drop.
Fascinating. 1080TIs seem to see 1:1 gains in hash rates as power increases until about 80% TDP, when the return drops off dramatically 1080s drop off dramatically at . . . 65% TDP? Less? Interesting implications for power use optimization anyway
Ok. Final tally, for 4x1080TI @ 80%, 3 x 1080 @ 70%, 35 CPU cores >= 3GHz is . . . 1779 Watts Comfortably under my 1920W continuous limit although a bit dull numerologically main remaining concern is the fridge. rated 6.5A full-load, which would be (eep) 780W, insta-game over
GOTCHA 160W, pathetic. Can't believe I was worried about that damn food hole Modem (<7W) + router (<8W) basically negligible, as is Penny's Litter Robot (<4W rotating). Monitor + speakers + usb dock are 70W together tho, gotta watch that
Okay, off to catch up @ work but I think I'm set. Last task: replace one more 1080 on top of my workstation after a guy comes in to finish fixing the ceiling tomorrow Overall have say, the fire what burned through my ceiling was a small, basically-insignificant bump in the road
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