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If you're just looking to manage your personal environment, probably Vagrant + Chef. If we're talking about for a team or organization, a former co-worker of mine wrote a nifty tool called Boxen [http://boxen.github.com] that's definitely worth checking out.

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I'm not a miner, so correct me if I'm wrong, but that seems like a bit of an apples-to-oranges comparison. Tesla cards (and the servers designed around them) are intended for specific use cases: mission-critical enterprise solutions and scientific HPC. As a result, they run slower processor and memory speeds in comparison to nVidia's own consumer products, use ECC memory, and are optimized for double-precision over single-precision performance. Mining with a Tesla is like gaming with a Quadro card.

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mprovost 360 days ago | link

There is nothing mission critical or 'enterprise' about Tesla/Fermi cards. You can crash them and lock up your whole machine. Even if you can reboot the OS the card may not respond and the rebooted OS won't see it, we sometimes have to physically shut the machine down to reset the Nvidia card. Nvidia is still a gaming company at heart and it's going to take a while for them to adjust to providing equipment that is meant to be reliable and not just fast.

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I first learned about bit-shifting when I took DIP / Computer Vision as an undergrad. All the assignments were done as plugins for ImageJ, which is apparently widely used in the scientific community (or so the course claimed). ImageJ stores the pixel values for images as bytes, ints, or longs (depending on the color-depth), so to get the individual component values from a 32-bit RGBA image (8 bits per channel), you would do something like this:

int pixel = image.get(x, y);

int alphaVal (pixel & 0xFF000000) >> 24;

int redVal = (pixel & 0x00FF0000) >> 16;

int greenVal = (pixel & 0x0000FF00) >> 8;

int blueVal = (pixel & 0x000000FF);

That's just one example w/ one piece of software, but I know similar approaches are often used within the world of imaging / graphics. Maybe networking? Seem like it would correlate well to IP address operations.

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I'm guessing that that's the reporter's fault. The quote seems to referring to AWS, which they've probably never heard of, leading them to make a uninformed guess as to its meaning. Just another case of general media reporters covering stories they're not qualified for.

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lusr 787 days ago | link

If you guys mean this quote, thank you for allowing my brain to calm down because for about a minute I thought I was going completely insane in being unable to parse what was being written.

| "Think Amazon," he said, referring to the electronic commerce giant where the inventory is vast but the billing is per item. "That model really works."

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manvsmachine 786 days ago | link

That's the one.

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One thing I love about Lin's story is that it's making people realize that today's "industry experts" still don't perfectly place talent where it needs to be, even in an industry as heavily scouted and recruited as pro sports.

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focusing more on design choices and principles rather than on CSS technicalities

I'd suggest using it specifically for this reason - that is, unless there is another framework that does an equally good job of getting out of one's way as Bootstrap. That said, it definitely makes sense to try to limit its use to a small subset for your tutorials.

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manvsmachine 916 days ago | link | parent | on: Why Chef?

I'm guessing that 'receipts' was meant to be 'recipes'.

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IIRC, this is old and has already been debunked.

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Xen is still widely used. IIRC Xen provides the virtualization layer for AWS, and it is used by some pretty large hosting providers (Linode comes to mind). It also is packaged into a number of commercial commercial offerings. Oracle's VM solution is really just Xen running on Red Hat with some optimizations for their platform stack, same with Citrix. Clearly those two implementations alone is going to be a decently-sized install base.

I don't know how much KVM is used in the wild, but it has been crowned the "official" hypervisor for RHEL and Ubuntu, so I would guess that it it's been steadily gaining steam w/ the OSS crowd.

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pwaring 1052 days ago | link

KVM is used by Bytemark (www.bytemark.co.uk), who provide virtual machines for hosting (smaller scale than Linode, mostly UK).

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evangineer 1052 days ago | link

It's worth noting that Bytemark started out as and was for a very long time a Xen shop.

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dgl 1052 days ago | link

They started out with User Mode Linux actually, before Xen even existed.

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dasmoth 1051 days ago | link

Indeed -- and stuck with it for quite some time. They were trialling Xen for some time, but I don't think they ever deployed it on a terribly large scale. Certainly, my VM went straight from UML to KVM.

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pwaring 1051 days ago | link

I believe the management tools for Xen (or lack thereof) were the reason for using KVM instead. None of my machines (I have 7 or 8) have ever used Xen.

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evangineer 1050 days ago | link

Thanks for the catch, I had forgotten that they were a UML shop.

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pwaring 1051 days ago | link

They were never a Xen shop, they trialled Xen with a few customers but never rolled it out. This blog post has more detailed info:

http://blog.bytemark.co.uk/2011/02/28/why-we-skipped-xen

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evangineer 1050 days ago | link

Funny, I did read that article a few months ago but had completely forgotten about it. It's a good read if you're into the virtualisation thing.

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piranha 1051 days ago | link

New Ubuntu switched to KVM. They don't even supply kernels for Xen now.

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The funny thing is that, while my first reaction was "that's really cool", my immediate next thought was that it would have been much cooler using augmented reality instead of figurines and models. I wonder how much longer there is going to be demand for physical proofs of concept like these.

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