monopede

5 ms·

1.
by monopede 14y ago
Note that Dalvik is actually not a very good trace JIT. There's a recent paper comparing Dalvik to an embedded version of Hotspot. The Dalvik interpreter was slightly faster (~5%), but the JIT speedup was only 3-4x whereas it was ~12x for
2.
by monopede 14y ago
I don't think assemblers written in assembly were that bad. LuaJIT 2 uses direct threading (not new at all), register-based bytecode (relatively new), and manually optimised register assignment (perhaps new). AFAICT, the key innovations a
3.
by monopede 14y ago
I was using the "bc" command line calculator. Turns out it's rounding the exponent. The revised number is correct, though.
4.
by monopede 14y ago
Moore's law: Transistor count doubles every 18 months. Assuming 40 years at the company (it's a bit less) that's: 2^(40/1.5) = 67,108,864 The 62 Core Xeon Phi has 5 billion transistors. Divided by that number is: 149. That's a bit low.
5.
by monopede 14y ago
Would make sense. Michael Bender is a co-author on that paper and he apparently works for Tokutek, judging by this presentation: http://www.bnl.gov/csc/seminars/abstracts/Bender_Presentatio...
6.
by monopede 14y ago
As I understand this, this wouldn't automatically protect you from race conditions. If you have a shared variable x then a statement like x += 5 may be fine depending on whether it is implemented as a single bytecode instruction or
7.
by monopede 14y ago
"I'm thinking of doing a PhD in Germany" I'm not discouraging, but once you're considering a particular position, please try and talk to previous PhD students of your prospective supervisor. Germany has hardly any fully-funded PhD positions
8.
by monopede 14y ago
The blog author didn't actually have two factor authentication enabled. The headline is wrong.
9.
by monopede 14y ago
Actually, she just spend a few weeks practising with an Olympic competitor, i.e., nowhere near 6 months. I'm not an expert on these things, but it seemed to vary from scene to scene. Someone commented on the trailer and explained how it's
10.
by monopede 14y ago
You can build a library for doing Erlang-style programming, but there are lots of features that you can't reproduce. (1) In C++ you may get hard crashes, so to get reliability you need to use high-overhead OS processes. Erlang allows you t
11.
by monopede 14y ago
That depends on the kind of scientific computing you want to do. Haskell has the repa library [1] which is very nice for working with (multi-dimensional) arrays at a high level. Performance is decent (I don't know if they have a BLAS/LAPAC
12.
by monopede 15y ago
Small correction: "Plankalkül" which translates to "plan calculus"
13.
by monopede 15y ago
Or create a (resizeable) image that is case-sensitive. Not sure what the performance overheads of that will be, though.
14.
by monopede 15y ago
I think he/she meant that birds can't survive in space. The pigs at least seem to have some sort of bowl around their head.
15.
by monopede 15y ago
Note that in many dynamic languages (and I think that includes PHP), syntax checking is done right before you try to run it, and type checking is performed at runtime. When you're programming in a Java IDE, these kinds of errors (and relat
16.
by monopede 15y ago
Yes, for the AI class they promised to give you a signed statement of accomplishment. IIRC, this statement will also tell you how well you did in relation to all other students (including Stanford students).
17.
by monopede 15y ago
Well said! I don't think I found a argument in that article that I would agree with. The mentioning of Perl as a great example is probably the worst. The purpose of a programming language is to express things as precisely as possible, bo
18.
by monopede 15y ago
That will most likely bite you since you're giving a pure type to a non-referentially transparent function. There is a reason why random functions are in a state monad or IO.
19.
by monopede 15y ago
That's very easy to explain. A low-pause GC requires a concurrent garbage collector. Writing a correct concurrent garbage collector is VERY tricky, so you usually start with something much simpler. Concurrent GCs typically also add overh
20.
by monopede 15y ago
Sorry to break the stream of cheers, but I have my concerns about this design. Yes, it's a neat idea and already quite well-implemented. Looking at the video I can't help but feel confused. Sometimes things seem to resize randomly (at pl
21.
by monopede 15y ago
Hm, this doesn't mention support for lexical closures (not turned on by default, of course) which supposedly has been merged into the master branch. I sure hope this will make it into the release.
22.
by monopede 15y ago
There is an interesting book, "The Spirit Level: Why Equality is Better for Everyone" by Richard Wilkinson and Kate Pickett, that makes a very strong argument that in developed countries inequality is correlated pretty much every "bad" metr
23.
by monopede 15y ago
I understand that this is meant just as an experience report, but I have to say this article didn't convince me in any way that this rewrite was a good idea. Obvious questions: 1. How does the performance of the new system compare to the o
24.
by monopede 15y ago
English is my second language and I got ~13,500 words. I was surprised that this was only half the average. I read a lot of scientific papers in my field and almost never come across a word I don't know. Writing technical papers well als
25.
by monopede 15y ago
Given that some people have separate accounts for games, I wonder how accurately that number reflects the actual number of users.
26.
by monopede 15y ago
Looking at the instruction set it doesn't even support subroutines. It would only need a way to get and set the current program counter (like ARM) and you could implement subroutine calls using push, pop, and jmp.
27.
by monopede 15y ago
Actually, there are microkernels running in a vast amount of mobile phones nowadays. They typically don't run on the main CPU, though, but on various controller chips. Microkernels are practical -- they just have different trade-offs. M
28.
by monopede 15y ago
In the video he mentions it's about 5000 per night.
29.
by monopede 15y ago
Both have a hostile attitude towards privacy, claiming that it's dead, trying to make it look old fashioned and irrelevant. [Citation Required]
30.
by monopede 16y ago
Actually he bought Pixar to turn it into a hardware company. John Lasseter is probably the bigger reason why it became such a successful animation company. Of course, thanks to Steve the company survived long enough to discover its true pu

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