Posts by ML1
Posts by ML1 |
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1)
Message boards :
Science (non-SETI) :
Electrical Engineers
(Message 1448321)
Posted 5 days ago by  ML1
... I sometimes put 1 Kilowatt into my transmission system... Is that for moon-bounce? Or something more esoteric?... Sorry, no clue as to where your comment came from! As for could ET detect our power grid... Doubtful unless we deliberately arrange and phase the power lines... Far more likely would be for the various radars to be picked up. Keep searchin', Martin |
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2)
Message boards :
Science (non-SETI) :
Electrical Engineers
(Message 1448274)
Posted 5 days ago by ML1
You guys are all talking rocket science to me! I view electricity down a cable as simply water down a pipe. The pressure is the voltage, the flow is the Amps, the diameter is the resistance, and the volume is the watts. Very roughly speaking of course :-0 All very roughly at room temperature for low voltage steady-state direct current (DC). Add a few dynamics and it all changes! ;-) One advantage of 50Hz or 60Hz for mains AC as opposed to a few hundred Hz is that you can work "very big" more easily... And 50Hz or 60Hz are nice speeds to couple directly to big generating machinery. Also, coupling losses are minimized for long distance transmission. Or... You go new-fangled high voltage DC! Keep searchin', Martin |
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3)
Message boards :
Science (non-SETI) :
Black Holes part 2
(Message 1448273)
Posted 5 days ago by ML1
... This BLACK HOLE just isn't BLACK AT ALL' snarl boffins ... a nearby black hole is not living up to its name at all by shining as brightly as it possibly can and showing scientists just how much more there is to learn about the astronomical phenomenon... Also, our astronomical skies are not as unchanging as some religions would have us wish: ... 44-MEEELLION-star Hitchhikers Guide to the Galaxy Anglo-Australian boffins have published a new survey of the northern sky that describes 44 million stellar objects and finds 250,000 have changed in the last 60 years... All in colourful The Register irreverence! Keep searchin', Martin |
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4)
Message boards :
Politics :
Linux hits the world (cont #2)
(Message 1448260)
Posted 5 days ago by ML1
Interesting report..... Thanks for that. That is quite a story and quite an eye-opener... IT is what we make it and the users allow it to become... Martin |
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5)
Message boards :
Science (non-SETI) :
Super comet ISON
(Message 1448246)
Posted 5 days ago by ML1
Comet Ison was severely battered in its encounter with the Sun, and largely destroyed. Telescopes saw the giant ball of ice and dust disappear behind the star, but only a dull streamer emerge. Shame about the usual sensationalism... So... How many times has Ison already made the encounter? Might it be that all the readily volatile volatiles have been blasted off and the comet surface has been now newly melted/annealed to stifle any further grand shows? Then add the great extreme cooling as the comet retreats from the sun to then crack open the surface to reveal, oncemore, a comet... Wait and see and watch the show! Keep searchin', Martin |
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6)
Message boards :
Science (non-SETI) :
Dark matter/Dark Energy
(Message 1448245)
Posted 5 days ago by ML1
Those are 'too easy' by just looking for the mix of colours. Can not instruments do the same by looking at the spectrum counts?... So... Is this a "Galaxy Zoo" follow-up to try to classify Einstein rings and other gravitational lensing? Keep searchin', Martin |
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7)
Message boards :
Politics :
Climate Change, 'Greenhouse' effects: DENIAL
(Message 1448243)
Posted 5 days ago by ML1
Is this some 'convenient under-reporting' as in a blase 'not looked'? Or more of a cynical game of pollute and be damned and lie through your teeth about it? U.S. methane emissions higher than estimated ... Sciences finds U.S. methane emissions are much greater than the EPA estimates. Methane is a potent greenhouse gas, trapping far more heat in the atmosphere than carbon dioxide. The study, published Monday, says methane emissions from livestock flatulence and belching, along with those associated with oil and gas drilling, are much greater than estimated. "Overall, we conclude that methane emissions associated with both the animal husbandry and fossil fuel industries have larger greenhouse gas impacts than indicated by existing inventories," the study's authors wrote. The study finds total U.S. methane emissions are 1.5 times to 1.7 times greater than estimated by the Environmental Protection Agency... Reminds me of a similar game played out by another super-power recklessly exploiting a 'free' resource to great waste: The Most Senseless Environmental Crime of the 20th Century Fifty years ago 180,000 whales disappeared from the oceans without a trace, and researchers are still trying to make sense of why... ... Grimmest is the case of the North Pacific right whale, which appears to have been all but killed off by Soviet whalers over the course of three years in the mid-1960s. “The species is now so rarely sighted in the region,” Clapham and Ivashchenko wrote in 2009, “that single observations have been publishable in scientific journals. We cannot be sure, but it is entirely possible that when the few remaining right whales in the eastern North Pacific live out their lives and die, the species will be gone forever from these waters.”... And note how something like over 10% of USA fracking wells leak due to shoddy operating practices... To my view, there does look to be a very serious problem in that the fossil fuels industry get their raw product for zero-cost and yet it is very costly not to leak/lose/pollute with that 'free-of-cost' resource... Hence the profitability in polluting? And our planet be damned? All on our only one planet, Martin |
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8)
Message boards :
Number crunching :
BOINC Screen Saver for Linux.
(Message 1447836)
Posted 6 days ago by ML1
Really?... That is an amazingly obscure way of going about things... That description is for some pretty low level bolt-in-your-own custom screensaver... Are you sure there are not some screensavers already set up for you? One guess would be to check for Einstein@home for their screensaver. Has one more recently been done for s@h? Happy crunch in' Martin |
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9)
Message boards :
Politics :
Video: Apollo VII Astronaut Walt Cunningham takes on global warming in Poland...
(Message 1446955)
Posted 8 days ago by ML1
It is always very suspicious when the messenger is emphasised more than their message... So, just another ultra-right-wing Heartland sponsored stooge... Even if he is a true American military type. This comment sums up his presentation nicely: Climate Denier at CPAC: Trust Me, I'm an Astronaut Who do you trust? The money-makers and lobbyists? Or lifelong scientists? All on our only one planet, Martin |
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10)
Message boards :
Number crunching :
GPUs: AMD vs nVidia vs The Rest of The World
(Message 1444566)
Posted 14 days ago by ML1
Hahaha, yeah I can see how it might be tough for Intel and AMD to come to terms with that they both build inferior compilers to the open source LLVM project, and want nVidia's help while having shoved them out of the x86 market completely. There seems to be too much of that game between the main players that helps noone. You could argue that the latest little game is just another in-kind (negative) step as is always done between such manufacturers. However, in this instance, it is for rather a high profile and widely used and important target... (Thanks for good comment in the various other posts.) For my own personal view: nVidia nicely gained a good lead some time ago with their bold move into what at that time was a whole new GPGPU architecture that would work well enough for both industrial and consumer use. There's various graphs showing how that has been very successful although more recently the competition is starting to gain more market share. I've been nVidia since the early days of their CUDA, all to good gain. Looking around for alternatives, the AMD APUs look good and interesting for their homogenous memory access, but all at a small scale for onboard integrated graphics. I'm guessing such as the Intel Phi, and the Epiphany/Parallela systems are far too new/niche for the time being. Which leaves the AMD (ATI?) Radeon GPUs as a comparable alternative?... For the moment, I'm waiting to see which way things go for the latest controversy. (Shame we seem to always create in effect monopolies!) Happy clean fast crunchin', Martin (All just humble personal opinion as ever and always.) |
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11)
Message boards :
Number crunching :
Observation of CreditNew Impact (4)
(Message 1444403)
Posted 14 days ago by ML1
... 'Boinc whetstone' versus app technology. The CN Author didn't understand that instruction level parallelism does more operations in the same time, by an average factor of, you guessed it, 3.3. (Also) Are the credits being compared against the credit granted to the hardware performance for the "median computer" that s@h sees? What happens when the "median computer" host becomes a GPU-based system rather than CPU-only? Would we then see a sudden unholy credits rate shift? Keep searchin', Martin (Jason: Good to see you're still optimizing!) |
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12)
Message boards :
Number crunching :
GPUs: AMD vs nVidia vs The Rest of The World
(Message 1443992)
Posted 15 days ago by ML1
...Perhaps a more everyday readable summary is eloquantly given in this comments post about the nVidia approach: Is this why nVidia are emboldened or driven to try throwing their weight around to attempt to dictate terms?... Top500: Red dragon ... graphical power (See the accelerators graph. Note the recent trend...) IT is what we allow it to be... Martin |
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13)
Message boards :
Number crunching :
Best video card for seti/CPU
(Message 1443990)
Posted 15 days ago by ML1
Absoulute highest production RAC All you ever might want to see of current super-crunching: Top500: Red dragon ... graphical power Tianhe-2 Happy super-fast crunchin', Martin |
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14)
Message boards :
Number crunching :
Running BOINC as a service
(Message 1443882)
Posted 16 days ago by ML1
Sounds ideal to run as a Linux machine! Most distro installs for boinc on Linux install boinc as a service. That's fastest and also the most secure. You can add the boinc service to the 'video' group to allow it to use your GPU. You'll also need the graphics drivers. Usually they are installed automatically or they are easily selectable. Could be an interesting run! ;-) Happy fast crunch in' Martin |
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15)
Message boards :
Number crunching :
Linux boinc and nvidia cards
(Message 1443531)
Posted 17 days ago by ML1
All works fine for most systems for Linux. nVidia cards require a proprietary install of nVidia software but that is all automated and most users 'never notice'. AMD and Intel are very well supported directly. Their drivers are often available on Linux before the other OSes! HOWEVER, beware! Check your hardware is OK first. Run memtest86+ overnight and run a disk check. Linux is very sympathetic to old hardware but will crash just the same for hardware problems. Clean out the dust also? Good luck, Happy crunch in', Martin |
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16)
Message boards :
Number crunching :
Motherboard help
(Message 1443528)
Posted 17 days ago by ML1
Rather than trying to squeeze everything into one box, instead use TWO motherboards each with two x8/x16 channel PCIe slots. By far the easiest way and likely cheapest. Good luck, Happy fast crunch in', Martin |
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17)
Message boards :
Number crunching :
GPUs: AMD vs nVidia vs The Rest of The World
(Message 1443298)
Posted 17 days ago by ML1
... Which comes back to... How do such as AMD, Intel, and any others compare for using GPUs for compute tasks and for Boinc? How do the AMD "APUs" compare? Or do they pale alongside discrete GPUs? Have AMD leapfrogged the nVidia CUDA architecture? Or rather, any comments for jumping to AMD for my next GPU? Happy super-fast crunchin', Martin |
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18)
Message boards :
Number crunching :
GPUs: AMD vs nVidia vs The Rest of The World
(Message 1443297)
Posted 17 days ago by ML1
... So what does crying on the inetrnet do about it? Nothing!... Fortunately, you're proved wrong on that every day for many examples. Perhaps a more everyday readable summary is eloquantly given in this comments post about the nVidia approach: ...Oddly enough, the proposed exploitees don't care much for this approach. I wouldn't be surprised if nVidia get the finger from a few more people other than Linus... IT is what we allow it to be... Martin |
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19)
Message boards :
Number crunching :
GPUs: AMD vs nVidia vs The Rest of The World
(Message 1443284)
Posted 17 days ago by ML1
OK. I can see your point. To a degree. But where is your outcry over the fact that car maunfacturers have been that way since they have been in existance? I mean you cant go to an auto parts store and by brakes for 2003 BMW and expect them to fit on your 73 VW can you? Poor example. It is more like a major car manufacturer franchising the gas stations to fit special high-speed filler hoses specially to fit only that manufacturer's cars. If you buy that manufacturer's cars, then you get to fill real quick. Any other vehicle and you're left waiting whilst the gas trickles in (suspiciously unnaturally) slowly... (Hey! And people do complain and the Trading Standards people do sue the car manufacturers for anti-competitive practices for some standard frequently replaced parts such as tyres and brakes and fluids...) All a question of freedom and coercion... Note that "gcc" is a constantly updated 30+ year old essential part of the IT world that is used by most of the world as well as just nVidia... IT is what we allow it to be... Martin |
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20)
Message boards :
Number crunching :
GPUs: AMD vs nVidia vs The Rest of The World
(Message 1443273)
Posted 17 days ago by ML1
... Might not be able to make a GPU? Or if they do, It might not work great because of the new NVIDIA code or process? My understanding is that if you are not nVidia, then indeed so. Or, at the very least as I understand it, should gcc become hobbled for nVidia in that way, all other GPU vendors may then be put to extra expense in various ways or may have use of their products restricted in various ways. All at the cost of/to their customers... All a game of the vandalism of design for incompatibility... IT is what we allow it to be... Martin (All just my humble opinion...) |
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