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LeopoldS

bluescarni.info | Research, interests and random bits in the life of Francesco Biscani - 1 views

www.bluescarni.info

Francesco

shared by LeopoldS on 02 Apr 10 - Cached
  • LeopoldS on 02 Apr 10
     
    if you ever wanted to get into the brain of Francesco ... here is how ...
LeopoldS

A first-order secular theory for the post-Newtonian two-body problem with spin - I. The... - 6 views

mnras.oxfordjournals.org/...mnras.sts198.full

shared by LeopoldS on 17 Nov 12 - No Cached
  • LeopoldS on 17 Nov 12
     
    Francesco and Sante s paper is out - let's see the reactions ....
Dario Izzo

Global Climate Models Powered by Intel® Xeon Phi™ Coprocessors - 1 views

www.intel.com/...xeon-phi-nasa-sc12-video.html

CPU intel® climate models

shared by Dario Izzo on 05 Mar 13 - No Cached
  • Dario Izzo on 05 Mar 13
     
    NASA has it ... I WANT IT TOO!!!! 240 threads on 60 cores ... Imagine the possibilities of this new toy!! Francesco also has it in his new "kill the seals" job
LeopoldS

Three-body Gallery - 2 views

suki.ipb.ac.rs/3body

PHY mathematics

shared by LeopoldS on 10 Mar 13 - No Cached
  • LeopoldS on 10 Mar 13
     
    loads of new solution classes to the three body problem found by Bulgarians ... Francesco and Sante, you will love these
  • LeopoldS on 10 Mar 13
     
    ups, should have looked at diigo before ... Luis was faster again
LeopoldS

Firefox OS | Mozilla Developer Network - 1 views

developer.mozilla.org/...Firefox_OS

INF

shared by LeopoldS on 28 Aug 12 - No Cached
  • LeopoldS on 28 Aug 12
     
    any of the geeks tried this already? Francesco?
  • LeopoldS on 30 Aug 12
     
    nobody ... you are not as geeky as I thought ...
Ma Ru

Command line tools for the Google Data APIs - 2 views

code.google.com/googlecl

INF command line fun Web 2.0

shared by Ma Ru on 20 Jun 10 - Cached
  • Ma Ru on 20 Jun 10
     
    I'm sure Francesco will love it... perhaps of use for ACT's Google calendar/docs?
  • LeopoldS on 21 Jun 10
     
    is there an easy way (easy for Francesco I mean) to retrieve the citation number of papers in google scholar automatically (e.g. for act papers)?
  • Francesco Biscani on 13 Jul 10
     
    It seems like google scholar is not supported yet.
LeopoldS

OpenStack: An Open Source Cloud Project Emerges - 1 views

gigaom.com/openstack

cloud computing IT

shared by LeopoldS on 19 Jul 10 - Cached
  • LeopoldS on 19 Jul 10
     
    Francesco, check this one out ... seems like coming at the right time for us ... Leopold
  • Francesco Biscani on 19 Jul 10
     
    Sure looks interesting, hopefully it will gain some traction. Bonus point it uses Python heavily :) First versions are coming out in Sept/Oct, according to their roadmap, we could start playing with it as soon as it gets out.
pacome delva

Planets 'Sing' in Three-Part Harmony - 0 views

news.sciencemag.org/...shot-planets-sing-in-thre.html

celestial_mechanics extrasolar_planets resonance

shared by pacome delva on 05 Jul 10 - Cached
  • this is the first three-planet resonance ever seen.
  • The three planets are in a 4:2:1 resonance: the innermost giant completes four orbits in the time the middle one completes two and the newfound outermost world completes one.
  • pacome delva on 05 Jul 10
     
    for Francesco!
LeopoldS

Why Can't PCs Work More Like iPhones? - Bits Blog - NYTimes.com - 1 views

bits.blogs.nytimes.com/...ant-pcs-work-more-like-iphones

computing

shared by LeopoldS on 27 Feb 10 - Cached
  • LeopoldS on 27 Feb 10
     
    bye bye Francesco to your beloved command line ....
  • Francesco Biscani on 27 Feb 10
     
    I would love to see people working on touchscreens all day, orthopedics would have a field day :) Anyway, the answer to the original question is: because the JesusPhone is an appliance, a PC is not.
  • Luzi Bergamin on 01 Mar 10
     
    Luckily there is open source, so neither Steve Jobs nor NY Times decide for us what sort of OS we have to like! I'll join the "Jihad for the command line" troop!!
Dario Izzo

Probabilistic Logic Allows Computer Chip to Run Faster - 3 views

www.azonano.com/news.asp

INF MAD probabilistic computing AI

shared by Dario Izzo on 07 Dec 09 - Cached
  • Dario Izzo on 07 Dec 09
     
    Francesco pointed out this research one year ago, we dropped it as noone was really considering it ... but in space a low CPU power consumption is crucial!! Maybe we should look back into this?
  • ...6 more comments...
  • Ma Ru on 07 Dec 09
     
    Q1: For the time being, for what purposes computers are mainly used on-board?
  • Dario Izzo on 07 Dec 09
     
    for navigation, control, data handling and so on .... why?
  • Ma Ru on 07 Dec 09
     
    Well, because the point is to identify an application in which such computers would do the job... That could be either an existing application which can be done sufficiently well by such computers or a completely new application which is not already there for instance because of some power consumption constraints... Q2 would be then: for which of these purposes strict determinism of the results is not crucial? As the answer to this may not be obvious, a potential study could address this very issue. For instance one can consider on-board navigation systems with limited accuracy... I may be talking bullshit now, but perhaps in some applications it doesn't matter whether a satellite flies on the exact route but +/-10km to the left/right? ...and so on for the other systems. Another thing is understanding what exactly this probabilistic computing is, and what can be achieved using it (like the result is probabilistic but falls within a defined range of precision), etc. Did they build a complete chip or at least a sub-circiut, or still only logic gates...
  • Dario Izzo on 07 Dec 09
     
    Satellites use old CPUs also because with the trend of going for higher power modern CPUs are not very convenient from a system design point of view (TBC)... as a consequence the constraints put on on-board algorithms can be demanding. I agree with you that double precision might just not be necessary for a number of applications (navigation also), but I guess we are not talking about 10km as an absolute value, rather to a relative error that can be tolerated at level of (say) 10^-6. All in all you are right a first study should assess what application this would be useful at all.. and at what precision / power levels
  • Joris _ on 07 Dec 09
     
    The interest of this can be a high fault tolerance for some math operations, ... which would have for effect to simplify the job of coders! I don't think this is a good idea regarding power consumption for CPU (strictly speaking). The reason we use old chip is just a matter of qualification for space, not power. For instance a LEON Sparc (e.g. use on some platform for ESA) consumes something like 5mW/MHz so it is definitely not were an engineer will look for some power saving considering a usual 10-15kW spacecraft
  • Dario Izzo on 07 Dec 09
     
    What about speed then? Seven time faster could allow some real time navigation at higher speed (e.g. velocity of a terminal guidance for an asteroid impactor is limited to 10 km/s ... would a higher velocity be possible with faster processors?) Another issue is the radiation tolerance of the technology ... if the PCMOS are more tolerant to radiation they could get more easily space qualified.....
  • Joris _ on 08 Dec 09
     
    I don't remember what is the speed factor, but I guess this might do it! Although, I remember when using an IMU that you cannot have the data above a given rate (e.g. 20Hz even though the ADC samples the sensor at a little faster rate), so somehow it is not just the CPU that must be re-thought. When I say qualification I also imply the "hardened" phase.
  • Francesco Biscani on 08 Dec 09
     
    I don't know if the (promised) one-order-of-magnitude improvements in power efficiency and performance are enough to justify looking into this. For once, it is not clear to me what embracing this technology would mean from an engineering point of view: does this technology need an entirely new software/hardware stack? If that were the case, in my opinion any potential benefit would be nullified. Also, is it realistic to build an entire self-sufficient chip on this technology? While the precision of floating point computations may be degraded and still be useful, how does all this play with integer arithmetic? Keep in mind that, e.g., in the Linux kernel code floating-point calculations are not even allowed/available... It is probably possible to integrate an "accelerated" low-accuracy floating-point unit together with a traditional CPU, but then again you have more implementation overhead creeping in. Finally, recent processors by Intel (e.g., the Atom) and especially ARM boast really low power-consumption levels, at the same time offering performance-boosting features such as multi-core and vectorization capabilities. Don't such efforts have more potential, if anything because of economical/industrial inertia?
Juxi Leitner

InfoQ: A Crash Course in Modern Hardware - 3 views

www.infoq.com/...k-crash-course-modern-hardware

technology computer architectures programming

shared by Juxi Leitner on 23 Jan 10 - Cached
  • Juxi Leitner on 23 Jan 10
     
    for francesco ;) though i guess he knows it all already so for the others who wanna know too
  • Francesco Biscani on 25 Jan 10
     
    Cool, lots of useful info in there. Though, never having programmed in Java before, I wonder if one can go that low-level in Java?
  • Juxi Leitner on 25 Jan 10
     
    oh I don't think so but it is interesting for the JVM I guess
LeopoldS

http://www.eecs.umich.edu/~valeria/research/publications/DATE10RSA.pdf - 1 views

www.eecs.umich.edu/...DATE10RSA.pdf

cryptography computer INF

shared by LeopoldS on 08 Mar 10 - No Cached
  • LeopoldS on 08 Mar 10
     
    nice ... hacking a 1024-bit RSA key in 100 hours .... Francesco will like this one
LeopoldS

UW researchers look to reinvent the graphical user interface - 4 views

blog.seattlepi.com/...200101.asp

BMI INF

shared by LeopoldS on 31 Mar 10 - Cached
  • LeopoldS on 31 Mar 10
     
    Francesco have a look at this - any interest?
LeopoldS

Kettling Wikileaks | DefectiveByDesign.org - 1 views

www.defectivebydesign.org/wikileaks

INF politics opensource

shared by LeopoldS on 21 Dec 10 - No Cached
  • LeopoldS on 21 Dec 10
     
    sympathetic point of view ... I am sure Francesco will appreciate ...
  • Luís F. Simões on 22 Dec 10
     
    the great Richard Stallman ( http://xkcd.com/225/ ). Nice article indeed.
LeopoldS

Ninety gaffes in ninety years - Home News, UK - The Independent - 2 views

www.independent.co.uk/...s-in-ninety-years-2290148.html

jokes

shared by LeopoldS on 10 Jun 11 - No Cached
  • LeopoldS on 10 Jun 11
     
    weekend readings for Francesco ...
LeopoldS

Official Google Blog: A new kind of computer: Chromebook - 3 views

googleblog.blogspot.com/...nd-of-computer-chromebook.html

technology INF

shared by LeopoldS on 12 May 11 - No Cached
  • LeopoldS on 12 May 11
     
    Francesco you will like this one ...
  • Francesco Biscani on 13 May 11
     
    Nahh... it's cloud com-poo-ting, it's all about taking control from the user into the corporation. To quote Stallman: "It's stupidity. It's worse than stupidity: it's a marketing hype campaign [...] Somebody is saying this is inevitable - and whenever you hear somebody saying that, it's very likely to be a set of businesses campaigning to make it true."
  • LeopoldS on 15 May 11
     
    but it comes from google! :-)
LeopoldS

TPAC - Technology Policy and Assessment Center at the Georgia Institute of Technology - 2 views

www.tpac.gatech.edu/toa.php

data mining

shared by LeopoldS on 15 Oct 09 - Cached
  • LeopoldS on 15 Oct 09
     
    Francesco could you please have a look at this? technology behind? semantic? useful also for us?
LeopoldS

libdispatch - 0 views

libdispatch.macosforge.org

parallel computing INF

shared by LeopoldS on 13 Sep 09 - Cached
  • LeopoldS on 13 Sep 09
     
    Francesco have a look at this if it could be of interest for pagmo?
ESA ACT

Wolfram|Alpha: Searching for Truth | h+ Magazine - 0 views

www.hplusmagazine.com/...wolframalpha-searching-truth

searchengine computer algorithm experiment INF BIO

shared by ESA ACT on 24 Apr 09 - Cached
  • ESA ACT on 24 Apr 09
     
    interesting article and interview - for our computer guy to read: Francesco, Marek - but maybe even Tobias for the bioinspiration .... (LS)
LeopoldS

Google Code Blog: Introducing Closure Tools - 1 views

googlecode.blogspot.com/...introducing-closure-tools.html

open source INF

shared by LeopoldS on 06 Nov 09 - Cached
  • LeopoldS on 06 Nov 09
     
    new open source tool from google .... Francesco: of any interest to us?
  • Juxi Leitner on 06 Nov 09
     
    I don't think so, it is just a code optimizer for JavaScript, unless there are somewhere big JavaScript (web2.0) applications running that is not of much interest for us Other google labs systems e.g. FriendConnect could be useful for Ariadnet, maybe also the visualization and social graph API
  • Juxi Leitner on 12 Nov 09
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