5 ms·
220,000 cores of preemptible was about $2200/hr (I believe Drew is using n1-highcpu-32s). Disclosure: I work on Google Cloud, launched Preemptible (and approve
by boulos 10y ago
220,000 cores of preemptible was about $2200/hr (I believe Drew is using n1-highcpu-32s).
Disclosure: I work on Google Cloud, launched Preemptible (and approved Drew's quota requests!)
- gaddferreira 10y agoThat's a really nice info to share, i was thinking almost an order of magnitude higher, thank you.
- Theodores 10y agoThe fuel bill per hour for the 737 going over my house right now is easily double $2200. I can visualise what is going on with a plane burning through fuel/money but with 220000 CPU cores it is all imaginary. How big a house would be needed for such an array of 'cores'? How much electricity is required, and again can that be compared to aeroplanes, Teslas or even toasters?
- pjc50 10y agoLet's say you're using 2x 10 core CPUs per 1U PC, in a 42U rack. That's 840 cores per rack, 262 racks. You won't fit that in a house, you need a moderately large datacenter. At 100W per CPU that's 22kW, which feels low; about a tenth of a Tesla and a fraction of a plane. That doesn't account for the cooling you'll need! (You can probably do a lot better, but that's my piano tuners estimate)
- brianwawok 10y agoI would be shocked if Google wasn't getting 2x 32 core CPUs per 1U at a minimum, which brings down your rack count a bit.
- TheSpiceIsLife 10y ago22kW of CPU heat would need 22kW of cooling. Refrigerated air conditioning is has about 1:3 thermal efficiency, so your cooling system will require ~7.5kW electricity to generate 22kW cooling capacity. That makes about 30kW. At $0.15 / kWh we're talking about $4.5 per hour for the electricity. Other costs dwarf the energy costs.
- mikeash 10y agoNote that 22kW is right about what a Tesla will consume cruising at highway speeds. So you could label that as "an efficient cruising car."
- JonyEpsilon 10y agoIf it were 10 cores/CPU then 220,000 cores is 22,000 CPUs. At 100W per CPU that's 2,200,000W = 2.2MW. So more like a train than a Tesla!
- zaroth 10y agoSo ~$300/hour in electricity.
- lightcatcher 10y agoYes, and based on the $0.15/kWh comment, about $450/hour of electricity. This is more in line with what I would have guessed for 220k cores.
- minxomat 10y agoEven if those were ARM cores (currently 192 cores/U @ 1.8 GHz), it would still take about 30 racks. ARM sucks at single-core performance, but it handles parallel workloads very well.
- neurotech1 10y agoActually, a 737-700 burns less than $2200 worth of fuel per hour, depending on operating weight, and how good a deal on the fuel the airline receives. 737-700 burns approximately 750 Gallons per hour at approximately $2.50/Gallon for Jet-A1 purchased wholesale. $1875/Hr for the fuel.