search for: optmiz

...traints on weights like /x1< w1 <x2 x3< w2 <x4</i> I need help with solving for the minimum variance portfolio as solve.QP doesn't allow me to specify the lower boundaries. Thanks Mahesh -- View this message in context: http://r.789695.n4.nabble.com/Help-with-Portfolio-Optmization-tp4637425.html Sent from the R help mailing list archive at Nabble.com.

...return TESTE(atoi(argv[1]),atoi(argv[2])); > } > > I don't know how gcc4 resolves the for loop, but the MSVC is great in this example. gcc-4.3 also eliminates the loop entirely and directly calculates the value of varx. > If I change the paraml and put a constant, the LLVM optmizes very well. It looks like LLVM's scalar evolution code isn't handling your testcase well. Ciao, Duncan.

Is there any reason to avoid looking at optimizing the encoding process? From just a simple profile run, it looks like a big chunk of the time is in seed_curve, sqrt, dradf4 and log. Are there big changes to the encoding part that are coming that would invalidate optimizations done now? -tim --- >8 ---- List archives: http://www.xiph.org/archives/ Ogg project homepage:

Before re-inventing the wheel I would like to ask: does anyone know about an optimizer in R which can reliably identify which value of X (Xopt) leads to Y (Yopt) closest to Ytarget in Y <- MonotoneStepFun(X) optionally with the restriction that Yopt <= Ytarget (at least if any Y <= Ytarget, otherwise any Yopt > Ytarget would be the preferred answer) If none is known, I will write

I was optimizing a 650MB using ferret (0.11.3) and I received the following error. I''ve seen some people have similar issues but I haven''t seen any resolutions. The contents of the index directory follow the error. Has anyone seen anything like this and found a resolution? Many thanks. /mnt/apps/search/releases/20070622175637/script/../config/../vendor/

Hello, I was trying to run few testcases and see how llvm optmizes different scenarios. I have a small testcase like: #include <stdio.h> int a, b, c; int main() { a = b + c; c = a; if (a == b) b = c; else b = a; printf( " a = %d \n ", a ); return 0; } The corresponding llvm IR is (...

Hello, 1) Is there any nonlinear programming optmizer that I can user for the following problem? Obj function: (max) revenue = price * volume Constraints: price and volume pair must be from the following variable data set: Variable data set: # price volume 1 10 500 2 20 450 3 30 330 4 40 250 5 50 190 Expected result: 10,000 (variable row#4) 2) C...

Hi all, Running simulations, I'm generating market response to 2 factors X&Y.. There is no closed form for the market response.. The results are store in a matrix Z(X <- seq(.02,.98,.02), Y <- seq(.01,.19,.01)).. For optmization purpose I need to approximate the values for any factor X in 0,02-0,98 and Y in 0,01-0,19 How can I do it ? For one factor : Xn-1 < x <= Xn f(x)=(f(Xn-1)*(x-Xn-1)+f(Xn)*(Xn-x))/(Xn-Xn-1) I don't know how to generalize this for two factors.. Thanks in Advance Naji

...s. So now it´s finished I´d like to run the optimized programs generated by my pass. But I´ve got some problems to do this, because I didn´t find a way to generate assembly from the code and then call the gcc compiler to produce machine-dependent code. Please, does anybody know how to run programs optmized by passes? Thanks you all! Best regards, Alysson -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.llvm.org/pipermail/llvm-dev/attachments/20100702/1c72679b/attachment.html>

The following C code : #include <stdio.h> #include <stdlib.h> int TESTE2( int parami , int paraml ,double paramd ) { int varx=0,vary; int nI =0; //varx= parami; if( parami > 0 ) { varx = parami; vary = varx + 1; } else { varx = vary + 1; vary = paraml; } varx = varx + parami + paraml; for( nI = 1 ; nI <= paraml; nI++) { varx =

Hi I''m using wondershaper like script. But noticed imperfect scheduling. By googling, I found some patches that takes the aal5 atm overhead in the scheduling algorithms. http://www.adsl-optimizer.dk/ADSL-optimizer/ Before trying it, has anyone tried these patches? they apply on 2.4.29 kernel and 2.6.9 TC. I use centos4 with a 2.6 kernel, so I can''t try these easily. Thanks

...rograms generated by > my > > pass. > > But I´ve got some problems to do this, because I didn´t find a way to > > generate assembly from the code and then call the gcc compiler to produce > > machine-dependent code. > > Please, does anybody know how to run programs optmized by passes? > > > > Thanks you all! > > Best regards, > > Alysson > > > > _______________________________________________ > > LLVM Developers mailing list > > LLVMdev at cs.uiuc.edu http://llvm.cs.uiuc.edu > > http://lists.cs.uiuc.edu/m...

...------------------------------- A GlobalValue was declared and mapped to the variable p. Some LLVM IR instructions were created according to those generated by LLVM from source. I.e., load p, load a[1] based on p, load p again, store a[2] based on p, etc. The machine code turned out to be slightly optmized, as shown on the left. Things were getting better after the GlobalVariable of p was set as a constant. Redundant Loads of p (line 5, 8 and 11) were removed, and so was line 12 because of line 10. However, I could not make it better any more, although optimal machine code just need those marked w...

Hi, the following llvm-ir is manipulated by the optimizers: %target2 = getelementptr %.string %result, i32 0, i32 3, i32 %len1 (%_.string = type {i32, i32, i32, [0 x i8]}) the last parameter i32 %len1 is replaced by i32 0 by the optimizers. (both, 2.9 and 2.8). When i turn optmization off, it works correctly. How can i use an optimizer-safe dynamic indexing of arrays? -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.llvm.org/pipermail/llvm-dev/attachments/20110915/b1357e8f/attachment.html>

...l is generated. The problem is some series produces numeric problems with optim. My question is if there is a way of telling to R that at every critical error of optim jumps to the next series instead of stopping the calculations. Or better yet, tell it to run another arima fit but with a different optmization algorithm. Thanks!!! [[alternative HTML version deleted]]

HI, Dear R community, I want to know how to select the optimal decision threshold from the ROC curve? At what threshold will give the highest accuracy? Thanks! -- Sincerely, Changbin -- [[alternative HTML version deleted]]

Since a, b, and c are globals, how does the optimize *know* they are not used elsewhere (e.g. another module)? On Fri, Jan 4, 2013 at 7:49 AM, Somenath Chakraborty <some.chak at gmail.com>wrote: > Hello, > > I was trying to run few testcases and see how llvm optmizes different > scenarios. I have a small testcase like: > > > #include <stdio.h> > > > > int a, b, c; > > > > int > > main() > > { > > a = b + c; > > c = a; > > > > if (a == b) > > b = c; > &gt...

...y code, I see an array of 8 x i8 being optimized into i64 (so that memcpy is then optimized into mov) by some optimization transformation(s). I want to prevent this from happening. What optimization does this kind of type replacement? How can one prevent it alone from running (but keeping all other optmizations, i. e. not using -O0 or something similar). Many thanks!! Harel Cain -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.llvm.org/pipermail/llvm-dev/attachments/20111027/41ab821a/attachment.html>

The following C test program was compiled using LLVM with -O3 option and MSVC with /O2. The MSVC one is about 600 times faster than the one compiled with the LLVM. We can see that the for loop in MSVC assembler is solved in the optimization pass more efficiently than that in LLVM. Is there an way to get a optimization result in LLVM like that of the MSVC? Manoel Teixeira #include

...´d like to run the optimized programs generated by my > pass. > But I´ve got  some problems to do this, because I didn´t find a way to > generate assembly from the code and then call the gcc compiler to produce > machine-dependent code. > Please, does anybody know how to run programs optmized by passes? > > Thanks you all! > Best regards, > Alysson > > _______________________________________________ > LLVM Developers mailing list > LLVMdev at cs.uiuc.edu         http://llvm.cs.uiuc.edu > http://lists.cs.uiuc.edu/mailman/listinfo/llvmdev > >