[{"data":1,"prerenderedAt":449},["ShallowReactive",2],{"project-24829768":3},{"id":4,"name":5,"line":6,"line_source":7,"title":8,"url":9,"domain":10,"maker":11,"posted_at":12,"year":13,"points":14,"comments":15,"rank_in_year":16,"shown_in_year":17,"top":18,"tier":19,"category":20,"subcategory":21,"format":22,"keywords":23,"reception":29,"sentiment":30,"stance_mix":31,"scored_comments":36,"aspects":37,"strip":47,"post_text":50,"what":51,"said":94,"maker_in_thread":248,"shape":259,"grid":262,"attempts":412,"same_week":413,"maker_shows":41,"maker_hidden":441,"reader_version":442,"card":443},"24829768","Turing Pi 2","a compact ARM cluster with 32 GB RAM","title","Show HN: Turing Pi 2 – a compact ARM cluster with 32 GB RAM","https:\u002F\u002Fturingpi.com\u002Fturing-pi-2\u002F","turingpi.com","nsky-world",1603134694,2020,109,71,594,3028,20,"notable","infrastructure","arm cluster hardware","hardware",[24,25,26,27,28],"arm cluster","raspberry pi cluster","edge computing","compute module 4","mini itx","mixed",-0.181,{"positive":32,"neutral":33,"mixed":34,"critical":35},7,25,2,18,52,{"design":38,"performance":40,"docs":42,"pricing":44,"idea":46},{"positive":34,"critical":39},6,{"positive":41,"critical":41},1,{"positive":43,"critical":43},0,{"positive":43,"critical":45},4,{"positive":45,"critical":32},[43,48,48,41,43,48,48,48,49,41,49,49,48,49,41,41,43,41,48,41,41,48,41,41,48,41,43,48,48,41,48,43,48,41,49,43,41,48,48,49],3,5,null,{"problem":52,"audience":65,"pricing":70,"motivation":79,"time_to_build":50,"stack":84,"openness":93,"stage":93,"team_size":93},{"value":53,"source":54,"evidence":55},"Running a small multi-node ARM cluster for edge computing, CI and testing","maker",[56,59,62],{"id":57,"by":11,"text":58},"24829769","Today we are thrilled to announce the Turing Pi V2. The Turing Pi V2 is s compact cluster in a mini ITX form factor with 4 x cluster nodes, 2x mini PCIe (Gen 2) ports, 2x SATA…",{"id":60,"by":11,"text":61},"24830529","This is a great case study of how the Turing Pi helps with CI\u002FCD for ARM infrastructure https:\u002F\u002Fsynyx.de\u002Fblog\u002Fturing-pi-gitlab-ci-ansible\u002F Besides that the main direction here is…",{"id":63,"by":11,"text":64},"24831422","That's one of the point too. We have industrial customers who deploy apps in the places with a limited access to the internet, so increased reliability something important to…",{"value":66,"source":54,"evidence":67},"Industrial customers deploying at the edge, and developers running ARM CI or testing",[68,69],{"id":63,"by":11,"text":64},{"id":60,"by":11,"text":61},{"value":71,"source":54,"evidence":72},"V1 was $189; V2 price to be announced later and expected to be cheaper than V1",[73,76],{"id":74,"by":11,"text":75},"24835979","We are expecting the price to be cheaper than the V1, but the final price will be announced later this year.",{"id":77,"by":11,"text":78},"24840942","V1 is $189",{"value":80,"source":54,"evidence":81},"Provide a compact cluster for edge computing and ARM infrastructure",[82,83],{"id":57,"by":11,"text":58},{"id":63,"by":11,"text":64},[85,89],{"value":86,"source":54,"evidence":87},"Raspberry Pi Compute Module 4 (ARMv8)",[88],{"id":57,"by":11,"text":58},{"value":90,"source":54,"evidence":91},"Kubernetes",[92],{"id":63,"by":11,"text":64},"unknown",{"praise":95,"objections":118,"requests":175,"questions":204,"alternatives":230},[96,108],{"value":97,"source":98,"evidence":99},"Compact cluster form factor and upgrade path from V1 are appealing","commenter",[100,104],{"id":101,"by":102,"text":103},"24829906","geerlingguy","I spent a bit of time testing the v1 board, and while it isn't without fault, it's the best SBC-based cluster project I've used (haven't personally tested the SOPINE Clusterboard…",{"id":105,"by":106,"text":107},"24835864","mobilio","IT's amazing device! For now i'm running a few RPi devices and i was dream about such device to put them in for more processing power.",{"value":109,"source":98,"evidence":110},"Useful for testing and CI on ARM",[111,114],{"id":112,"by":102,"text":113},"24830707","I use mine to host some non-revenue-generating websites (they are super cheap for that purpose), and also for some ARM image builds that I integrate into my Docker\u002FKubernetes…",{"id":115,"by":116,"text":117},"24831256","barumi",">>Besides academic uses to perhaps teach distributed systems on these are there any real world use cases for these clusters? A considerable amount of people is already assembling…",[119,134,148,161],{"value":120,"source":98,"evidence":121},"Cost is high compared with x86 hardware or a used laptop",[122,126,130],{"id":123,"by":124,"text":125},"24831573","rasz","ThinkPad W530 fits the bill quite well. Broken screen puts it at around $100-150, $300 gets you fully working one. Less tyhan 4 CM4 modules, and what about Turing Pi 2 case?…",{"id":127,"by":128,"text":129},"24835418","tuananh","i often see people claim raspberry pi cheap but in reality it's not. a cluster like this is probably not cheap and performance wise, it's slower than, say an AMD x86 system.",{"id":131,"by":132,"text":133},"24832285","InvaderFizz","Yes, but I would opt for the newly released HC4 if two drives were fine. If you are looking for four to five drives, I'm sure someone will make a PCB at some point that uses A…",{"value":135,"source":98,"evidence":136},"Unclear practical use case beyond teaching",[137,141,145],{"id":138,"by":139,"text":140},"24830455","dogma1138","Besides academic uses to perhaps teach distributed systems on these are there any real world use cases for these clusters?",{"id":142,"by":143,"text":144},"24831070","draklor40","Outside of doing it for the heck of it (which is a valid enough use case , IMHO), what practical use do you see out of this ? To me, it looks like I can do all of the same things…",{"id":146,"by":124,"text":147},"24831082","Main use case might be doing whatever you would do on 10 year old laptop reused to be your home server. Similar performance, similar power usage.",{"value":149,"source":98,"evidence":150},"Shared SATA and PCIe limited to two slots; no redundant power",[151,154,157],{"id":152,"by":143,"text":153},"24836650","Theoretically yes, but there seem to be only 2 PCIe (and probably x1 slots). And the interconnect will be quite slower (I suspect) btw. the modules. All those GPIO pins are gonna…",{"id":155,"by":143,"text":156},"24836622","There is nothing in the schematics about multiple power supplies or battery backups, etc. If you are hooking up all 4 rpis to the same power source , might as well replace it…",{"id":158,"by":159,"text":160},"24859453","anaisbetts","But like, how? Mounting a volume in read\u002Fwrite mode on more than one machine is obviously going to corrupt it",{"value":162,"source":98,"evidence":163},"32GB RAM claim is misleading since each CM4 has up to 8GB",[164,168,171],{"id":165,"by":166,"text":167},"24830380","billsmithaustin","I don’t understand the claim about 32GB RAM. The diagram shows slots for four RPi compute modules, each of which has 1GB RAM.",{"id":169,"by":11,"text":170},"24830418","The new compute modules comes with up to 8 Gb of RAM. Here is a detailed review of new CMs https:\u002F\u002Fwww.jeffgeerling.com\u002Fblog\u002F2020\u002Fraspberry-pi-compute-module-4-review",{"id":172,"by":173,"text":174},"24830433","Someone","Reading https:\u002F\u002Fturingpi.com\u002Fturing-pi-2-announcement\u002F, they have designed a “Raspberry Pi 4 Compute Module (CM4)” with 8GB RAM.…",[176,186,197],{"value":177,"source":98,"evidence":178},"Rack mount case",[179,183],{"id":180,"by":181,"text":182},"24831015","silasb","Rack mount case would be nice.",{"id":184,"by":128,"text":185},"24835439","Rack mount form would be nice. Please do it!",{"value":187,"source":98,"evidence":188},"PCIe switching",[189,193],{"id":190,"by":191,"text":192},"24830084","rektide","PCIe switching would have been really interesting to see, even in a non-concurrent mode. One also desperately wishes that multi-host network adapters had a low-end market. A 1 x…",{"id":194,"by":195,"text":196},"24830385","jackyinger","PCIe switching sounds nice, but let me tell you that it is a terrible nightmare on every level. Hardware: these PCIe switches are finicky as all get out; will it link up to your…",{"value":198,"source":98,"evidence":199},"Mixed CPU architectures in one box",[200],{"id":201,"by":202,"text":203},"24830641","pella","Long term request for the next Turing ( mixed CPU cards together - in a Box! ) + ARM cards + X86 cards + RISC-V cards",[205,216,223],{"value":206,"source":98,"evidence":207},"What is the price?",[208,212],{"id":209,"by":210,"text":211},"24834790","russell_h","This is very neat. I’m sorry if I missed it, but have you announced pricing?",{"id":213,"by":214,"text":215},"24831828","MichaelBurge","What's the price?",{"value":217,"source":98,"evidence":218},"How does shared SATA work across nodes?",[219,222],{"id":220,"by":159,"text":221},"24835047","Stupid question, how do these 4 SoCs share the 2x SATA ports? Do you assign them to a specific processor somehow? Are the other machines booting off of PXE boot?",{"id":158,"by":159,"text":160},{"value":224,"source":98,"evidence":225},"Does the CM4 firmware support PXE boot?",[226],{"id":227,"by":228,"text":229},"24835956","capt_hotpants","Out of curiosity, does the firmware in the Compute Module allow for PXE boot? Would be a neat way to handle corruptions of the SD \u002F eMMC. Flick the power off through the Turing…",[231,240,244],{"value":232,"source":98,"evidence":233},"Used x86 laptops or mini PCs with VMs",[234,235,239],{"id":146,"by":124,"text":147},{"id":236,"by":237,"text":238},"24831259","ianhowson","You could get an off-the-shelf x86 machine in the same form factor and run the cluster nodes in VMs, for instance. Maybe you could argue that four RPis on a network are more…",{"id":123,"by":124,"text":125},{"value":241,"source":98,"evidence":242},"Raspberry Pi with the Pi Dramble cluster",[243],{"id":101,"by":102,"text":103},{"value":245,"source":54,"evidence":246},"AWS Graviton ARM instances",[247],{"id":57,"by":11,"text":58},{"comments":249,"answered":250,"key":251},16,9,[252,253,256],{"id":57,"text":58},{"id":254,"text":255},"24829968","m2 connector is something we are still experimenting with. The first two nodes are exposed to mini PCI express port, the third node is exposed to 2-ports 6 Gbps SATA controller.…",{"id":257,"text":258},"24830181","Noted!",{"commenters":260,"max_depth":39,"maker_replies":249,"first_comment_mins":43,"lifespan_hours":261},34,81,[263,265,268,269,271,274,277,280,282,285,287,289,290,293,294,296,300,303,305,308,309,311,312,316,317,319,321,323,325,328,330,331,332,334,336,337,339,340,341,344,345,346,348,351,352,355,356,358,360,361,364,366,367,369,371,374,377,379,382,383,387,390,393,395,397,400,402,403,407,409,411],[57,43,43,264,11,41],"project\u002Fneutral\u002Fidea",[266,43,48,267,102,43],"24829921","project\u002Fneutral\u002Fdesign",[254,43,43,267,11,41],[270,43,48,267,102,43],"24830164",[272,43,48,267,273,43],"24830954","ant6n",[275,43,41,276,191,43],"24830058","project\u002Fcritical\u002Fperformance",[278,43,48,279,102,43],"24830171","project\u002Fneutral\u002Fdocs",[257,43,43,281,11,41],"maker\u002Fneutral\u002Fnone",[283,43,48,267,284,43],"24830597","iron2disulfide",[286,43,43,267,11,41],"24830913",[209,43,48,288,210,43],"project\u002Fneutral\u002Fpricing",[74,43,43,288,11,41],[291,43,48,288,292,43],"24837168","k1e",[77,43,43,288,11,41],[105,43,49,295,106,43],"project\u002Fpositive\u002Fidea",[297,43,41,298,299,43],"24836439","project\u002Fcritical\u002Fdesign","boris",[301,43,48,267,302,43],"24836953","theandrewbailey",[101,41,49,304,102,43],"project\u002Fpositive\u002Fperformance",[306,41,43,307,11,41],"24829937","maker\u002Fpositive\u002Fnone",[138,34,48,264,139,43],[310,34,49,295,202,43],"24830525",[60,34,43,295,11,41],[313,34,48,314,315,43],"24830539","project\u002Fmixed\u002Fidea","Voloskaya",[112,34,49,295,102,43],[127,34,41,318,128,43],"project\u002Fcritical\u002Fpricing",[146,34,41,320,124,43],"project\u002Fcritical\u002Fidea",[322,34,41,320,116,43],"24831218",[324,34,41,320,237,43],"24831288",[326,34,43,327,116,43],"24831360","commenter\u002Fneutral\u002Fnone",[329,34,43,327,124,43],"24831580",[123,34,41,318,124,43],[115,34,49,295,116,43],[333,34,41,320,139,43],"24836034",[335,34,43,327,116,43],"24866056",[142,48,41,320,143,43],[338,48,43,281,11,41],"24831105",[236,48,41,320,237,43],[63,48,43,295,11,41],[342,48,48,343,228,43],"24835885","project\u002Fmixed\u002Fdesign",[152,48,41,298,143,43],[155,48,41,298,143,43],[347,45,48,264,228,43],"24836061",[349,45,48,264,350,43],"24836443","jmnicolas",[190,49,48,267,191,43],[353,49,43,354,11,41],"24830153","maker\u002Fneutral\u002Fpricing",[194,49,41,298,195,43],[357,49,43,327,11,41],"24830436",[359,49,48,267,191,43],"24830648",[227,39,48,267,228,43],[362,32,48,264,363,43],"24831177","tra3",[365,32,43,281,11,41],"24831204",[131,32,41,318,132,43],[368,32,41,318,363,43],"24832301",[201,370,48,264,202,43],8,[372,250,48,279,373,43],"24830124","hexman",[375,250,43,376,11,41],"24830178","maker\u002Fneutral\u002Fdocs",[220,378,48,267,159,43],10,[380,378,48,279,381,43],"24835283","mariusmarais",[158,378,41,298,159,43],[384,385,41,298,386,43],"24834615",11,"hinkley",[180,388,49,389,181,43],12,"project\u002Fpositive\u002Fdesign",[391,388,48,267,392,43],"24831653","dragontamer",[394,388,43,267,11,41],"24831871",[165,396,41,320,166,43],13,[398,396,48,267,399,43],"24830409","simlevesque",[169,396,43,401,11,41],"maker\u002Fneutral\u002Fdesign",[172,396,48,267,173,43],[404,405,48,264,406,43],"24844674",14,"webmaven",[213,408,48,288,214,43],15,[410,408,48,288,128,43],"24835650",[184,249,49,389,128,43],[],[414,419,423,428,432,437],{"id":415,"name":416,"points":417,"category":418},"24834636","Arturo",324,"languages",{"id":420,"name":421,"points":422,"category":20},"24842306","Bunkerized-Nginx",221,{"id":424,"name":425,"points":426,"category":427},"24835219","Formito Favicon Generator",199,"dev_tools",{"id":429,"name":430,"points":431,"category":427},"24833801","ConsoleChat",148,{"id":433,"name":434,"points":435,"category":436},"24846335","TidalWaves API",124,"data",{"id":438,"name":439,"points":440,"category":427},"24790500","WebCatalog",64,false,"v2",{"id":444,"name":5,"line":6,"ai":441,"cat":20,"year":13,"points":14,"comments":15,"rec":29,"s":445,"top":18,"kw":446,"maker":11,"domain":10,"tier":19,"attempts":43,"strip":447,"url":9,"mix":448,"praise":97,"objection":120,"sub":21},24829768,-0.18,[24,25,26,27,28],"0331033351553511013113113103313031501335",[32,33,34,35],1794036597386]