There have been legitimate uses for comparing a variable to itself - in particular under IEEE754 all comparisons that have a NaN as one of the operands return false, so checking for equality of a variable with itself was a way of detecting whether the variable held a NaN. Unfortunately optimising compilers used to think "what is this idiocy" and throw it away, hence many languages contain a isNaN function or similar.
114 posts • joined 26 Jun 2007
I mentally replaced ML with HPC throughout and the articles was still close to coherent and relevant. OMO the ultimate issue here is valuing programmers (both in industry and academia) with relevant specialist skills and rewarding them - that would encourage others to follow down their path.
"You may want to try throwing a set of GPUs at a particular computational fluid dynamics problem to see if that architecture can handle the workload in a more effective way. If it doesn’t deliver the gains you expected, then you haven’t sunk capital into a hardware investment"
Yada, yada, yada. I take the point, effectively renting unusual hardware, but GPUs are a poor example, in academia (if not Industry) they have moved into the mainstream and any self respecting central University service will offer nodes including them. So how about FPGAs or Xeon Phi's? You offer them, great ... how much ?!?
The cloud being of use to academic HPC currently is a myth. High throughput computing, yes there is a place. But at the moment not HPC.
Re: Big mistake..
I just assumed they didn't pay the local "taxes"
Re: One small catch...
Modern Fortran refers to Fortran 90 or later - usually at least Fortran 95 nowadays
Re: re: CODGER
10x? 100x more likely! And that's not a joke.
Don't quite get why this is particularly a Fortran problem - it's simply a result of floating point maths. In fact to expect bit wise identical results for every compiler/library/etc. combination in complex codes like those discussed here displays some ignorance about the nature of the beast, and that's before we even think about talking about parallelism. And in practice for the performance these guys need your choice of language is Fortran, C or C++, nothing else will cut it however much quiche you eat, and for all 3 the floating point issues are similar.
Never knew where Mike Corley was, live and learn ...
Re: in which electrons as “heavier” and therefore able to be controlled ion shorter gates
They're not talking about the actual mass, they're talking about the "effective mass". Wikipedia has an article on it
but I admit I haven't read it to see how good it is
Chemists tend to call Molybdenum "Moly". So though inaccurate "Moly's valley" would be a possibility.
Give the explosion of caffeine options since I were a lad I'm surprised he didn't do this via the standard Unix build automation tool. Then he could do things like
if he so wanted
"404 Not found"
Sigh, I read this first as "4004 Not found"
I'll get me zimmerframe ...
I sort of assumed
"I push the ladder.
I pull the ladder.
The PFY closes the window."
was some BoFH poetry form related to the haiku.
Re: Regression to the really mean
> JC? You mean the messiah?
No, he's a very naughty boy
Re: Regression to the really mean
Yes there is a difference. But either will be a disaster. May wants to cement the surveillance state. Leadsom has no interest in the "common man", she merely wants to legalise the (in my opinion) tax scams she has run throughout her career - see Private Eye passim.
Re: More importantly...
But million-to-one chances crop up nine times out of ten
(crossing the memes)
And the software comes from ...?
"There’s a twist in the competition on this task: for the first time ever, students have to write their own algorithm to solve the graph problem. They aren’t allowed to use the reference implementation – they have to provide their own approach. Teams will be judged on the quality of their code as well as their solution to the problem. It’ll be interesting to see what happens on this application."
Good. Call me a grumpy old sod (you're a grumpy old sod Ian), but while good fun and a demonstration of problem solving ability I struggle to see the real relevance of these competitions; you simply don't cobble together your own clusters any more, or at least you shouldn't be doing. But often the software is a different matter - where's the recognition of the people who write the stuff that can actually exploit this hardware? While I've seen the names of the teams competing and we're promised videos introducing them there's not even a link to the applications web pages, let alone naming the teams or institutions that develop them.
I must get out more ...
Apparently just beer is not enough ...
Re: Aw I missed the original thread, however:
So did I, and given it's El Reg I was amazed that nobody was straight in with Kate's Bush - a horticultural masterpiece in the waiting, surely. (My own name has nothing to so with this observation...)
Re: US nuke arsenal run by 1970s IBM 'puter using 8-inch floppies
Personally I've now got visions of the Windows10 upgrade interrupting the whole procedure
Re: Programming skills .NE. programming languages
"There aren't that many COBOL and Fortran programmers left, and no one is learning those languages these days."
There are plenty of Fortran programmers left, and new people learning the language regularly, just not in computer science departments.
Re: Some Department of Commerce weather alert systems use Fortran
"HPC is still C, Fortran, Assembler, then C++"
Rather at the top end it's Fortran (~70%), C(~7%), C++(~6%) and other, at least in the UK. See
for details. The numbers haven't changed much over the last few years.
Re: The answer is...
"..that the UK is not a net beneficiary of EU funds. Ergo it could afford to replace all EU funding with direct funding by the UK government on leaving, out of the money saved by not propping up Eurocrats and Eastern European failed states",
assuming the pie stays at least the same size post-BRExit as it is currently
Re: "I think we're coming to a point where we can give 2007 OR10 its rightful name."
Rimmer seems appropriate given it's out on the edge of solar system
Perhaps the mistake is that believing once you've had the initial idea the implementation is the easy part
Re: Toys for the minister to stand in front of
For that money sharks with frickin' lasers surely?
But seriously BIS does. That resource is called "The Research Councils." But because advice is given it doesn't mean it has to be listened to, for instance if it inconveniently doesn't recommend funding the ministers latest favourite new toy. In fact it might be better to reorganise things so that such advice isn't received in the first place.
Where's the recurrent spending?
And if you are buying the toys for the minister to stand in front of where, as the article mentions in passing, where is the money to keep it going when the minister returns to his club in London? in my own area, supercomputing, the real issue is not a lack of toys to play with, it's a lack of skilled individuals to help people use those toys well and the money to fund the day to day running costs. Such people require a unique set of experience and skills, yet the wages available for them are often low for such a skill set (so recruitment is hard), there is often little chance of career progression, and funding such people through grant money is often difficult. Yet without them the capital investment is simple a pile of silicon, metal and plastic sat in the corner ...
Oh for crying out loud
'The UK’s competition regulator wants to see a new database of utility customers set up so they can be bombarded with “targeted marketing”.'
In a time of stupid ideas this is one that truly stands out. I don't want this targeted marketing. I don't want to spend my spare time trawling through the different offers. I couldn't even give a flying one about so called "competition". I just want the right not to be ripped off. Is this so difficult?
Re: 30% chance of failure?
I found that, at least with my hi-fi, if you whacked the volume up to 11 until everything was clipped into nice square waves it very rarely failed to load. The speccy speaker didn't like it very much though
Re: I'm excited...
Sigh ... It's Fortran, not FORTRAN. has been officially for over 25 years. I must get out more.
Re: But why
Why does a sandwich company need any of this at all?
Liberté, égalité, fraternité ...
Well at best they're down to 2/3 now.
Re: There's a difference
That's close to what we call it, but not quite ...
Think Fortran, assembly language programming is boring and useless? Tell that to the NASA Voyager team
As in Fortran GOD is implicitly real
No Legal Obligation To Shut My Front Door
I have no legal obligation to shut and lock my front door, that doesn't mean it's not at least partially my fault when I leave it open and get burgled
"We are deeply disappointed in today's decision"
Ahhh, diddums ...
"I strongly encourage the Department of Commerce to conclude negotiations on a new agreement with the European Union that allows the free flow of data to continue"
You broke your last toy by being naughty with it, why should you get a new one?
But the point is surely that if people like her or Trump can evenly be vaguely considered as presidential material, well ... well that US politics, and by extension that of its allies, is just broken
"Data Centre -> HPC
More email misery and pillory for Hillary as FBI starts quizzery"
Why on Earth is this marked HPC? El Reg uses that term more widely than most, but surely this is pushing it!
Re: I'm guessing that...
Nit from a chemist: All nitrogen oxides are thermodynamically unstable ("endothermic") w.r.t. the elements
Blighty is little different. Indeed the rush to follow the lead of the "Land Of The Lobbyist" is one of the things that most depresses me, politically even having a common language barely divides us any more.
"Blighty's domestic intelligence agency MI5 foiled a number of life-threatening terrorist plots over the last 12 months, underlining the" point that existing powers are more than sufficient to address current needs.
Re: My friend did take a bomb to (primary) school.
Maybe Texas kids should organise a "Bring A Clock To School" day
A Doctor Writes ...
Well you can fuck right off then
MS would certainly be an aid to productivity
"Do you want to allow the following flint to make change to this rock?"
Re: "where it's free for consumers"
Indeed - there's a vaccine for Ebola nowadays
Random Fluctuations in the Cosmos
My word, I agree on something with David Davis! The world gets stranger every day ...
But a beer to the both of you. And good luck to Tom in your deputy leadership challenge - one of the few truly good people left in British Politics, and an excellent music taste as well. What do you think of Royal Blood?
Re: Bernie Sanders
Indeed - he's the last vestige of civilised society in US politics. Good luck to him!
But not "universal". That went a long time ago...
Finally the truth is revealed ...
"Microsoft head software engineer Lee Holmes says Windows 10 applications will now be able to plug into installed anti-virus platforms to better malicious scripts."
The Evil Empire is back!
Re: 2 million lines of FORTRAN code
Errrr, Standard Fortran (note spelling) has never had a punch construct. And your history is wrong as well