Posts by tullio


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21) Message boards : Number crunching : Energy Efficiency of Arm Based sysetms over x86 or GPU based systems (Message 1487865)
Posted 34 days ago by Profile tullio
IBM is still producing Power CPUs, Oracle (former SUN) produces Sparc, SGI has inherited the MIPS technology which I have used while at Trieste Area Science Park from 1991 to 1994. Olivetti had acquired the ARM CPU from Acorn RISC Machines but was foolish enough to sell it to an equity fund which only sells licenses, not chips, and gains millions.
Tullio
22) Message boards : Cafe SETI : Why do you run SETI@home? (Message 1487810)
Posted 34 days ago by Profile tullio
It was my first BOINC project. Now they are 7 plus three which ended. So I am still doing it.
Tullio
23) Message boards : Cafe SETI : Travelling in Safety (Message 1486924)
Posted 36 days ago by Profile tullio
I think ice in the Pitot tubes is the most likely cause, like in the case of the Air France A330 on the South Atlantic. She was very high. My sympathy to all.
Tullio
24) Message boards : Number crunching : Panic Mode On (87) Server Problems? (Message 1486741)
Posted 37 days ago by Profile tullio
Yes, but I leave BOINC to manage requests. Up to a few days ago, it asked for work. Not it gets only Einstein@home and Test4Theory@home.
Tullio
I checked it. I must have pressed the "No new tasks" button. Sorry.
25) Message boards : Number crunching : Panic Mode On (87) Server Problems? (Message 1486697)
Posted 37 days ago by Profile tullio
No stock MB on a BOINC 6.10.58 laptop. AP on my 7.2.41 workstation.
Tullio
26) Message boards : Science (non-SETI) : The James Webb Space Telescope (Message 1485764)
Posted 39 days ago by Profile tullio
They are optical telescopes looking to different parts of the EM spectrum, mostly visible and UV for Hubble, longer wavelength IR for Webb. Kepler is looking at a chosen constellation searching for planets passing in front of stars and diminishing their luminosity.
Tullio
27) Message boards : Cafe SETI : Stars are blue, Panthers are pink and the music plays here (Message 1484006)
Posted 43 days ago by Profile tullio
The Higgs boson is a boson, not a fermion like a quark. Leptons are particles interacting via the weak nuclear force, like the electron and the neutrino. Weakly interacting bosons are the W and Z particles.The Higgs field (not the boson) gives mass mostly to leptons and only in a minor way to strongly interacting particles (hadrons) like quarks and nucleons. Strongly interacting bosons are the gluons, which make quarks coalesce in nucleons.
Tullio
28) Message boards : Cafe SETI : Italian cafe (Message 1484003)
Posted 43 days ago by Profile tullio
"La grande bellezza" di Paolo Sorrentino, con Toni Servillo, ha vinto l'Oscar per il miglior film straniero, quindici anni dopo "La vita e' bella" di Roberto Benigni e cinquant'anni dopo "8 e 1/2" di Federico Fellini. E' un film dedicato a Roma, alla sua bellezza e alla sua decadenza, ma Roma e' sempre Roma.
Tullio
29) Message boards : Science (non-SETI) : BOINC Projects and Legitimacy (Message 1483973)
Posted 43 days ago by Profile tullio
I am taking part in 7 projects, all public. I took part in the AQUA project managed by D-Wave, which sells a so called quantum computer for 100 million dollars, and it disappeared shortly after the sale of the first computer to Lockheed-Martin.Maybe they objected to have some of the computer's algorithms made public.
Tullio
30) Message boards : Cafe SETI : Stars are blue, Panthers are pink and the music plays here (Message 1483152)
Posted 45 days ago by Profile tullio
The graviton is, or should be, the quantum of the gravitational field, which nobody has yet succeeded in quantizing, despite many efforts. It should have a spin 2, while the photon has spin one and the Higgs boson has spin zero.
I would not downplay Isaac Newton, his equations are still used to calculate the orbits of planets and the trajectories of spacecrafts.
Einstein's General Relativity extended the range of validity of Newtonian mechanics but did not abolish it.
The Standard Model of elementary particles includes the strong and weak nuclear forces and the electro-weak theory of Salam and Weinberg, but does not include gravitation.
The strings theory, although beautiful from a mathematical point of view, has not yet received any experimental confirmation from the results of LHC. No supersymmetric particles were found in the energy range (up to 7 TeV ) so far explored.
The rest is just speculation.
Tullio
31) Message boards : Science (non-SETI) : Supernova (Message 1483131)
Posted 45 days ago by Profile tullio
From Berkeley News, which I receive:
SN 2014J
Tullio
32) Message boards : Science (non-SETI) : Could a giant solar flare cause a catastrophe? (Message 1482897)
Posted 46 days ago by Profile tullio
Transistors and microcircuits for space use are more radiation resistant than silicon. Of course they cost more.
Tullio
33) Message boards : Science (non-SETI) : Controlled Fusion (Message 1482894)
Posted 46 days ago by Profile tullio
I think that at Hanford the waste is mostly liquid and cannot be glassified, Hanford was producing plutonium for bombs and was never a power reactor.Fuel elements from power reactors are solid.
Tullio
34) Message boards : Science (non-SETI) : Controlled Fusion (Message 1482759)
Posted 46 days ago by Profile tullio
France, with 54 fission reactors operating, has chosen a site for spent fuel elements which still produce heat and are the main problem at Fukushima. A 800 meters pit will be bored in NE France and a 1 km horizontal tunnel will store the elements encased in glass. Only a country like Franca has a sufficiently authoritative gov to make such a decision In Italy, spent fuel elements from 4 nuclear reactors are still stored in pools of water near the spent reactors.
Tullio
35) Message boards : Science (non-SETI) : Controlled Fusion (Message 1482667)
Posted 47 days ago by Profile tullio
Thorium has been tested and abandoned in Italy because light water reactors using enriched uranium and heavy water reactors using natural uranium were easier to build and maintain. You need years just to test a new type of reactor and find its problems.
Tullio
Incidentally, Nobel laureate Carlo Rubbia proposed to use a particle accelerator to ignite a thorium based reactor, what he called an energy amplifier. Not a bad idea, but very complex and costly to build.
36) Message boards : Science (non-SETI) : Controlled Fusion (Message 1482374)
Posted 47 days ago by Profile tullio
It would be sufficient to dismantle all nuclear warheads, using mostly plutonium, and mix the Pu with natural uranium in proven reactor types. I would say that there are about 80 tons of plutonium in nuclear warheads worldwide, and eight kilos are sufficient for a bomb.
Tullio
37) Message boards : Science (non-SETI) : Controlled Fusion (Message 1482320)
Posted 47 days ago by Profile tullio
ITER is a Big Science project being built in France. It was to cost 6 billion euros, now it has cost 15 and will probably reach 25. It is about 10 years late and nobody venture to say when it will reach break even. I was a fan of nuclear fusion 30 years ago, I even wrote a chapter on it in an Encyclopedia of Physics, but is is becoming a mirage. We have a beautiful nuclear fusion reactor in the sky at a safe distance, the Sun.
Tullio
38) Message boards : Cafe SETI : Italian cafe (Message 1481144)
Posted 51 days ago by Profile tullio
Totale: due medaglie d'argento, Innerhofer e Fontana, 6 di bronzo e 8 di legno (quarti posti). Ma Carolina meritava la medaglia d'argento, se non quella d'oro, andata a una russa per motivi politici (leggi Putin). Brava Carolina, brava Arianna e bravi Chris e Armin.
Tullio
39) Message boards : Cafe SETI : Italian cafe (Message 1479712)
Posted 54 days ago by Profile tullio
Altro bronzo di Carolina Kostner nel pattinaggio artistico, dopo la russa Adelina Sotnikova e la coreana Yuna Kin. Brava Carolina!
40) Message boards : Number crunching : GPU Wars 2014: Hello Maxwell (Message 1479699)
Posted 54 days ago by Profile tullio
Thanks everybody for their help. Sic stantibus rebus, I shall not buy the Gigabyte GTX 750 OC since it is probably overclocked. I shall wait for a not overclocked version.
Tullio


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