lgeek

25 ms·

181.
by lgeek 13y ago
What if I rename my account? Repository redirects are created, but would someone else be able to register with my previous username and take over repositories?
182.
by lgeek 13y ago
That will probably visibly damage the card (I expect the loop antenna would get really hot) and it would disable the chip-and-pin feature as well, making the card useless. I've had a MIFARE card crack starting from an edge, sectioning the l
183.
by lgeek 13y ago
This example implementation should come with a disclaimer: keeping metadata inside the allocated objects is a bad idea because it pollutes the caches and increases fragmentation. I think the problem of memory allocation becomes much more in
184.
by lgeek 13y ago
Nice read, I always enjoy reading about the grad school experiences of people with similar background to mine. > The main issue was that I never crisply understood all the use-cases and requirements for the systems I was building. I fel
185.
by lgeek 13y ago
>> The encrypted file – if The Register understands the paper correctly – embeds actions that are permitted on that file (for example, the ability to read and write to parts or all of the file. The Evaluate function is able to use t
186.
by lgeek 14y ago
This is typical for techniques that try to automatically fix security vulnerabilities or to add memory safety to native programs (so not a deal breaker), but I can spot a few limitations: * this implementation relies on static analysis whic
187.
by lgeek 14y ago
Trustzone is just a set of hardware features. Most ARM devices don't come with a proprietary supervisor. In fact, Linux used to run in the secure world on some development devices.
188.
by lgeek 14y ago
Off the top of my mind (sorry, I don't have the time to double check now): Phi has shared GDDR and distributed caches. Phi cores and caches are connected through a bidirectional ring interconnect, not a 2D mesh network. Still similar, but n
189.
by lgeek 14y ago
> the low-level ISA for accelerator chips is not documented at all (like with GPUs) Let me show you the AMD Southern Islands ISA specs: http://developer.amd.com/wordpress/media/2012/10/AMD_Souther...
190.
by lgeek 14y ago
You can buy an AMD 7750 for $99, which theoretically gives you in the range of 800-900 GFLOPS (single precision).
191.
by lgeek 14y ago
PIN/DynamoRIO and Valgrind have slightly different design aims. In short: * Valgrind was designed to support rich analysis plugins (like Memcheck, which keeps a shadow copy of every bit of data) and performance was a secondary concern (on V
192.
by lgeek 14y ago
If this is a concern, feel free to use the open source, BSD-licensed main competitor: DynamoRIO: http://www.dynamorio.org/
193.
by lgeek 14y ago
I think it's all about using the right tool for the right job. Sure enough, there are some things that dynamic binary modification(DBM) does that can also be implemented another way (e.g. generic application level profiling), but even some
194.
by lgeek 14y ago
> The problem is that most users (home & enterprise) just want things to work, they don't really care much how to get there and to have the best efficiency. When it comes to research, no one cares that much about what home users and
195.
by lgeek 14y ago
> The way they could take over the network is by crafting a new blockchain, forging fake transactions or even claiming that they own all bitcoins. If they solve blocks faster than the rest of the network, soon their malicious chain woul
196.
by lgeek 14y ago
I'm just saying, it's been 10% (with a £75 cap)[0] for ebay.co.uk for as long as I can remember. It's still widely used. The news to me is that other countries used to get lower fees. I wonder why. [0] http://pages.ebay.co.uk/help/sell/fee
197.
by lgeek 14y ago
It reminds me of another project to fight off spam[0], by automatically replying to each spam message. That one didn't end too well. [0] https://en.wikipedia.org/wiki/Blue_Frog
198.
by lgeek 14y ago
They could have planned out a drill and then waited for the first vulnerability they could exploit. Edit: mkjones says they bought the 0-day: https://news.ycombinator.com/item?id=5199757
199.
by lgeek 14y ago
I'm not familiar with the VM implementation on Linux, so I don't know if it has changed significantly. I expect it has. However, a lot of the article seems to be around swapping to disk. We have enough physical memory now that swapping to d
200.
by lgeek 14y ago
The product page on Farnell's website[0] has more information. They also have a number of boards in stock ready for delivery. [0] http://uk.farnell.com/jsp/search/productdetail.jsp?sku=22185...
201.
by lgeek 14y ago
I've used leJOS, an open-source jvm on NXT. It comes with libraries for sensors and actuators and it works quite well. http://lejos.sourceforge.net/
202.
by lgeek 14y ago
Just got an email from them: Dear Donor, Thank you for your support in the last few weeks, the donations we received, as well as the overwhelming number of messages of support made it clear that our efforts over the last year or so have not
203.
by lgeek 14y ago
The ARM port of Ubuntu is targeting ARMv7, but RaspberryPi has an ARM11 (ARMv6) processor, so it wouldn't run correctly.
204.
by lgeek 14y ago
I've had similar problems ordering a server this weekend. I've used the UK site to order on Friday evening a server which was supposed to be available in 24hrs. One hour later, I received an email confirming my payment has been received. I
205.
by lgeek 14y ago
I wasn't trying to say anything contrary to this.
206.
by lgeek 14y ago
I'm not saying that multicore programming is a solved problem (far from it), but scientific computing seems to work reasonably well with OpenMP and Open MPI. Personally, I like the Cilk[0, 1] approach, and it is simple to implement in most
207.
by lgeek 14y ago
I'm wondering why you say that a 'CPU core' is different from a Xeon Phi core. I've looked a bit into the Xeon Phi microarchitecture and I don't see any fundamental differences (well, I guess it depends on how you define 'fundamental') comp
208.
by lgeek 14y ago
But then again, Xeon Phi which inherited some technology from Larrabee maintains cache coherency for its 60 cores.
209.
by lgeek 14y ago
I'll second this recommandation. This kit became is my go-to choice for prototyping more complex microcontroller projects. Plenty of peripherals, flexible pin muxing, good documentation and the ARM core is quite fast. Finally, I almost for
210.
by lgeek 14y ago
I think at some point they've said that there are some import taxes for components but none for assembled devices.

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