Berkeley CSUA MOTD:Entry 30205
Berkeley CSUA MOTD
 
WIKI | FAQ | Tech FAQ
http://csua.com/feed/
2025/05/25 [General] UID:1000 Activity:popular
5/25    

2004/5/13-14 [Computer/Networking, Computer/SW/OS, Computer/HW/Drives] UID:30205 Activity:high
5/13    I just got back from a 10 minute talk by Pat Miller, the flash mob
        computing guy, about casual supercomputers.  He spoke in general
        about the flashmob and how it went.  (Another 6 hours and they
        probably could've gotten into the top 500.)  But more
        importantly, how you can have a supercomputer at home.  He booted
        up off the CD available at http://www.flashmobcomputing.org on 4
        chepo machines and got 2 GFlops. With 32 2 Ghz Machines you can
        easily get 48 GFlops.  Right now the CD doesn't run anything but
        LINPACK benchmarks, but people are starting to port their
        applications to it.  -jrleek
        \_ very cool -darin
           \_ me too!!
        \_ To the person who asked how this is any different from SETA@Home:
           The SETI@Home framework is well-suited to applications that do not
           require good interprocess bandwidth or latency.  A large range of
           supercomputing problems DO require both bandwidth and low latency.
           This is the first time someone has tried to build a community
           supercomputer that can be used for a wide range of problems.  The
           top500 list is ranked using LINPACK, which does linear algebra.  If
           you tried runing LINPACK on the SETI network, it would be terrible.
        \_ Is this similar to the XGrid thing hyped by Apple?
           \_ Except you do it with random non-homogenous computers.
              \_ You mean flashmob can connect CPUs other than pentium?
2025/05/25 [General] UID:1000 Activity:popular
5/25    

You may also be interested in these entries...
2012/3/29-6/4 [Computer/HW/Memory, Computer/HW/CPU, Computer/HW/Drives] UID:54351 Activity:nil
3/29    A friend wants a PC (no mac). She doesn't want Dell. Is there a
        good place that can custom build for you (SSD, large RAM, cheap video
        card--no game)?
        \_ As a side note: back in my Cal days more than two decades ago when
           having a 387SX made me the only person with floating-point hardware,
           most machines were custom built.
	...
2012/1/19-3/3 [Computer/Networking, Politics/Foreign/Europe, Computer/SW] UID:54294 Activity:nil
1/19    Transcript between the Italian cruise ship captain and the Port
        Authority
        http://www.csua.org/u/v9i (abcnews.go.com)
        This captain is amazing.
	...
2011/11/8-30 [Computer/SW/Security, Computer/SW/OS/Windows] UID:54218 Activity:nil
11/8    ObM$Sucks
        http://technet.microsoft.com/en-us/security/bulletin/ms11-083
        \_ How is this different from the hundreds of other M$ security
           vulnerabilities that people have been finding?
           \_ "The vulnerability could allow remote code execution if an
               attacker sends a continuous flow of specially crafted UDP
	...
2009/11/4-17 [Computer/SW/P2P, Computer/Networking, Computer/SW/Security] UID:53495 Activity:nil
11/4    Holy cow, I got a warning from my ISP that they were notified
        by BSA/baytsp.com that I was copying music/video/software.
        Do they do port scan or something? That's a first for me.
        \_ They hang out on P2P networks and track IP addresses.  -tom
           \_ I believe they are paid by content providers to perform this
              monitoring service, so you should only run this risk with content
	...
2009/10/1-21 [Computer/SW/WWW/Browsers] UID:53417 Activity:moderate
10/1    I am thinking of installing firefox on soda under my home directory.
        Will this make me a hozer?
        \_ Possibly. I wonder if we should have another VM for that...btw,
           I remember someone saying they're glad we're not on FreeBSD
           anymore, but last I checked, a bunch of our stuff is on FreeBSD,
           but our login server is not.
	...
2009/9/10-15 [Computer/SW/Mail] UID:53353 Activity:nil
9/9     What should outbound mail server be when reading mail from soda
        with IMAP? Is there a FAQ?
        \_ It's <DEAD>mail.csua.berkeley.edu<DEAD> (same as for incoming mail).
           \_ "The message could not be sent because connecting to SMTP
               server <DEAD>mail.csua.berkeley.edu<DEAD> failed. The server may
               be unavailable or is refusing SMTP connections."
	...
2009/7/28-8/6 [Computer/SW/Database] UID:53213 Activity:nil
7/27    I have an actual technical question here. My MySQL DBA tells me
        that I can't expect a MySQL port to be able to run effectively
        on more than a two CPU box, he says that the extra CPUs will
        sit there unused. Is this true? I have a bunch of new quad core
        servers that I would like to use as Database machines. -ausman
   \_ It's not that simple.  If you stress test your new fancy multi core
	...
2009/7/2-16 [Computer/SW/Mail, Computer/SW/Security, Computer/SW/WWW/Server] UID:53106 Activity:nil
7/2     Is imaps working?  What are the hostnames of the "incoming and
        outgoing mail servers" for CSUA email, and what kind of options
        should one set?
        I also noticed that we seem
        \_ Setup yer .forward or .procmailrc for now. I'm at a loss, too.
        \_ <DEAD>mail.csua.berkeley.edu<DEAD>. Using SSH (on default port 993) like before.
	...
2009/7/2-13 [Computer/SW/Security] UID:53102 Activity:nil
7/2     ssh: connect to host 128.32.112.233 port 22: No route to host
	...
2012/8/26-11/7 [Computer/SW/Security] UID:54465 Activity:nil
8/26    Poll: how many of you pub/priv key users: 1) use private keys that
        are not password protected 2) password protect your private keys
        but don't use ssh-agent 3) use ssh-agent:
        1) .
        2) ..
        3) ...
	...
2012/8/2-10/17 [Computer/SW/OS/OsX] UID:54450 Activity:nil
8/2     How do you guys like Mountain Lion 10.8.1 so far? Should I wait
        for 10.8.2 before upgrading?
        \_ I went from Snow Leopard to Mountain Lion on my mac mini. I haven't
           really noticed anyting different.
           really noticed anything different.
        \_ mostly refinements of 10.7, for example, integration of iPhone
	...
2011/9/14-10/25 [Computer/HW/Drives] UID:54173 Activity:nil
9/13    Thanks to Jordan, our disk server is no longer virtualized. Our long
        nightmare of poor IO performance should hopefully be over. Prepare for
        another long nightmare of poor hardware reliability!
        ...
        Just kidding! (I hope)
        In any case, this means that cooler was taken out back and shot, and
	...
2011/5/9-7/13 [Computer/Companies/Apple, Computer/SW/OS/OsX] UID:54106 Activity:nil
5/4     Any thoughts about apple switching to ARM for all machines?
        \_ Could only have happened if the Mac App Store had been a wild, wild
           success, and they were willing to give up Steam. Games/dual-booting
           is strategically valuable to not driving people away from macs.
           A new ARM iOS based device, or opening the Apple TV to iOS apps
           (same thing, really) would be much more likely than sabotaging their
	...
2010/1/22-30 [Computer/HW/Laptop, Computer/SW/OS/OsX] UID:53655 Activity:high
1/22    looking to buy a new development laptop
        needs ssdrive, >6 hr possible batt life, and runs linux reasonably
        Anyone have a recommendation? Thx.
        \_ thinkpad t23 w ssdrive and battery inplace of drive bay
        \_ Ever wondered what RICHARD STALLMAN uses for a laptop?  Well,
           wonder no more!
	...
2009/11/13-30 [Computer/SW/Unix] UID:53523 Activity:nil
11/12   How does one find out if a system has rootkit installed?
        \_ Unix or m$?
           \_ Unix. On M$ I always assume it's compromised.
              \_ Install Tripwire before you plug your server into The Net?
                 The only other answer I can think of is to reinstall the
                 OS from scratch on another server and do an md checksum
	...
2009/10/24-11/3 [Computer/SW/OS/Windows] UID:53465 Activity:nil
10/24   Should Windows 7 be really called 6.1 instead, given that there are no
        big new features over Vista?
        \_ If you have to measure iPod by feature, then it really blows
           compared to what M$ has to offer. Only stupid PMs value
           a product by the number of features out there.
           \_ Even the "ver" and "winver" commands in Windows 7 say the
	...
2009/10/25-11/3 [Computer/SW/OS/OsX] UID:53468 Activity:nil
10/24   I have an usb device with 2 functions (tablet and flash).  Windoze
        can detect both but mac can only detect the tablet.  Why and is
        there a way to fix it?  (bootcamp/virtualization do work too, but
        I am asking for a pure os x solution)
	...
2009/8/27-9/9 [Computer/SW/OS/OsX] UID:53304 Activity:nil
8/26    Any suggestions on a good OCR program for either OS X or Windows that
        will work on scanned documents outputted to pdf?  Preferably free?
        Thanks, scottyg
        \_ Check Abbyy or Scansoft.  Not free.
           \_ Thanks...I think I'd prefer a free or opensource piece of
              software unless there is a huge difference in quality.  I
	...
2009/9/1-9 [Computer/SW/OS/OsX] UID:53317 Activity:nil
9/1     How do I get Alpine to stop flashing in OS X terminal?
        \_ Time the interval it flashes at and blink out of phase.
           \_ I did this and now I fail to acknowledge turn signals while
              driving.  Should I stop?
	...
2009/8/6-14 [Computer/SW/OS/OsX] UID:53250 Activity:moderate
8/5     Why is Mac OS 10.6 $29 and 10.5.6 $129? Is it a typo?
        \_ $29 for existing users.
           \_ it doens't even support ppc does it.
              \_ who cares about ppc anymore? Everything is Intel based
                 \_ I have a PPC mini at home that I use.
                 \_ I have a quad core G5 ppc.
	...
2009/7/24-8/6 [Recreation/Computer] UID:53193 Activity:kinda low
7/24    I am trying to come up with a list of bands that have played the
        Berkeley co-ops. So far I have the following:
        Primus - Barrington "Frizzle Fry"
        Green Day - Cloyne & Chateau
        Digital Underground - Cloyne
        Bluchunks - Chateau and Cloyne
	...
2008/4/11-16 [Finance/Banking, Computer/HW/Drives] UID:49728 Activity:nil
4/11    Countrywide 12 month CD is 4.25%. But some people tell me they're
        going out of business. Is it actually safe to deposit into
        Countrywide right now? Will FDIC pay me the full amount + interest
        should it ever goes out of business?
        \_ Are you really that concerned about 4.25%? I could see if it
           was 7% or something. How much more is that than the next best
	...
Cache (4854 bytes)
www.flashmobcomputing.org -> www.flashmobcomputing.org/
Over 700 computers came into the gym and we were able to hook up 669 to the network. Our best Linpack result was a peak rate of 180 Gflops using 256 computers, however a node failed 75 through the computation. The biggest challenge was identifying flakey computers and determining the best configuration for running the benchmark. This is the home of the first Flash Mob Computing supercomputer and the official site for all things Flash Mob Computing. On April 3, 2004 University of San Francisco will host the first Flash Mob Computing computer, FlashMob I, with the purpose of creating one of the Top 500 Supercomputers on the planet. You are invited to join FlashMob You are invited to join us in Koret Gym at USF in San Francisco for an all-day event. Bring as many computers as you can and well give you everything you need to jack-in and add your computers firepower to FlashMob I, and hopefully make history. The more people that come the bigger a supercomputer we can create. Everyone who participates will receive a t-shirt, a FlashMob CD-ROM with all the software, and an access pass to the days events . Plus youll receive a certificate of participation and a badge to put on your computer in recognition of having created one of the fastest supercomputers on earth. In addition, there will be prizes, contests, special guests, and lots of fun throughout the day. Join the Post FlashMob LAN Party After the FlashMob Supercomputer completes, we are hosting the largest LAN party in San Francisco ever! This is your one opportunity to put 1,000 of your closet friends on a 10-Gigabit LAN Thats right, we said Ten G-G-G-gigabit local area network and settle the score. The LAN Party is free for everyone who participates in the FlashMob, but its closed to those that dont, so bring your LAN box in the morning for a great seat. A Flash Mob supercomputer is hundreds or even thousands of computers connected together via a LAN working together as a single supercomputer. A Flash Mob computer, unlike an ordinary cluster, is temporary and organized on-the-fly for the purpose of working on a single problem. By bringing hundreds of people like you together in one room, we will have enough computing power to become one of the fastest supercomputers on the planet. Anyone with a 13 GHZ Pentium III Celeron/AMD equivalent or better with at least 256MB of RAM. Kids, students, adults, professionals, academics, web folk, IT departments, computer clubs, LAN Party types. Your computer must be at least 13 GHZ Pentium III/AMD equivalent or better with at least 256MB of RAM, a 100 Base-T network connection and a CD-ROM. The CD-ROM contains everything you need including an operating system, networking and configuration software and the benchmarking software. Because the software boots from the CD-ROM and runs entirely from memory, your hard drive will never be touched so it doesnt matter what your OS is or what software you have installed. When you arrive, youll be assigned a Hub Captain who will help you get your computers up and working as part of FlashMob I. Youll be running Linpack - the benchmarking software used to rank the Top 500 Fastest Supercomputers. So tell your friends, grab computers from home, from work, from school, wherever. If youre interested in becoming a Hub Captain or sponsoring a hub, click here . If you think youll have more than 10 computers click here and let us know. While grid computing, like the SETIHome project, has been around for some time, and big iron supercomputing dates back to WW II, the idea of creating an ad-hoc supercomputer on-the-fly thats tightly coupled on a fast LAN using ordinary PCs is a revolutionary idea. Today, supercomputing is controlled largely by governmental organizations, academic research institutions, animation studios, and recently biotech companies. This means that the problems that get solved by supercomputers are narrow in scope and tightly controlled. We think that a group of folks should be able to get together and study whatever they want, and they should be able to use a supercomputer to help them. So if a high school science class wanted to study the ozone hole using a supercomputer model, they could create a FlashMob supercomputer in a few hours and start running their model today. If a group of neighbors were worried about how a local gas stations underground gas tank might leak into the drinking water if the tank ever cracked, they could use Flash Mob Computing to model the scenario. In short, we hope Flash Mob Computing will democratize supercomputing. That is to say, it will make supercomputing accessible to everyone. It will be at least one students thesis The results of FlashMob I will be submitted for inclusion in the Top 500 Supercomputers We expect numerous academic journal articles to be published based on the results Sounds Great!