search for: eficiency

Hi, I am trying to avid the somewhat costly startup overhead of launching a separate R executable for each "client" request on Linux. My current architecture is such that My Java client explicitly calls R in batch mode and passes it certain parameters. The initital startup takes almost 10 seconds because R has to load a bunch of libraries as well as a moderately large, previously

Hello, I have a question regarding subsetting of vectors. Here's an example of what I'm trying to do: vect.1 <- c(76,195, 290, 380) vect.2 <- c(63, 95, 133, 170, 215, 253, 285, 299, 325, 375) I would like to subset vect.2 so that it has the same length as vect.1, and its numbers are the first corresponging higher value compared to vect.1. The output should be: final.output =

Hello, I want to change the day of the month in a date object. What I am doing at the moment is: x=as.POSIXlt(x) x$mday=13 x=as.Date(x) Does anybody know if there is a more "natural" (eficient) way to do this Thank you Felipe Parra [[alternative HTML version deleted]]

Hello to all. I'm trying to implement a simple register allocator using graph colouring (I know, everyone has already done that :-)) and I'm also using LLVM 3.4 from master branch. The algorithm I'm using is based on the one described on the "Modern Compiler Implementation in C". My implementation is totally experimental and doesn't aim to be fast, eficient or even

Hello, I''ve tried to change ipt_conntrack hashsize and con under my debian charge but doesn''t work ! Ive got 2876Mb available for conntrack so I''ve done (according to some previous mail and this http://www.wallfire.org/misc/netfilter_conntrack_perf.txt) CONNTRACK_MAX = 2876 * 64 = 184064 HASHSIZE = 2876 * 8 = 23002 But the near power of 2 is 2^16 = 131072

...l, you can easily create and delete machine code. You can use the following functions: engine->freeMachineCodeForFunction(function); // clean the JITed code function->eraseFromParent(); // clean a function's IR About the lifetime of the classes, its better to create them only once, for eficiency sake. Allocating PassManagers each time you compile a given piece of code is slow (and probably not useful as you can reuse it). Nuno ----- Original Message ----- > Hi, > > I apologize in advance if this is not the correct place to ask these > questions, but I would be very grateful...

On Sep 17, 2013, at 5:15 AM, Leandro Santiago <leandrosansilva at gmail.com> wrote: > Hello to all. I'm trying to implement a simple register allocator using graph colouring (I know, everyone has already done that :-)) and I'm also using LLVM 3.4 from master branch. > > The algorithm I'm using is based on the one described on the "Modern Compiler Implementation in

Hi, I apologize in advance if this is not the correct place to ask these questions, but I would be very grateful for redirection to the appropriate list/docs if so. I've just started with LLVM in the last week or so, and have worked my way through the Kaleidoscope tutorial, the IR docs & programmers manual, plus a few of the examples; everything makes sense. But there's one

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Hi Robin, First, please let me state that I'm not xiph, nor an IceCast maintainer, all I'm saying here are my views, but, as nobody answered your mail, I guess it's better than nothing. Robin Gareus <robin at gareus.org> writes: > Looking at the SVN repo: there's 30+ commits since the 2.6.2 release; > the last one from August 2009. Are there any intentions to roll a

...delete machine code. > You can use the following functions: > engine->freeMachineCodeForFunction(function); // clean the JITed code > function->eraseFromParent(); // clean a function's IR > > About the lifetime of the classes, its better to create them only > once, for eficiency sake. Allocating PassManagers each time you > compile a given piece of code is slow (and probably not useful as > you can reuse it). > > Nuno

I have a friend with a small business running a small SIP based phone system. He was looking into providing some SIP phones for a couple of remote teleworkers, but as he started to look around and ask me questions he ran across analog adapters which made him curious. He proceeded to ask me if there was an analog adapter that provided the following functionality in which my reply was simply,

Good Day, Looking at the SVN repo: there's 30+ commits since the 2.6.2 release; the last one from August 2009. Are there any intentions to roll a release anytime soon? Are there any more recent branches? I'm currently looking into extending icecast2 (more below) and am wondering if I should base the patches on 2.6.2+debian-fixes or work from svn-trunk? We are using a cluster of icecast

Hello, I've been playing a bit with the "noexec" flag for filesystems. It can represent a substantial obstacle against the exploitation of security holes. However, I think it's not perfect yet. First thing, an attempt to execute a program from a noexec-mounted filesystem should be logged. It is either a very significant security event, or it can drive nuts an