similar to: Computing time when calling C functions - why does an extra function call induce such an overhead?

I am using C code to create an S4 object based on Douglas Bates's example in his lecture notes on <http://www.ci.tuwien.ac.at/Conferences/DSC-2003/Tutorials/RExtensions/slide s.pdf> http://www.ci.tuwien.ac.at/Conferences/DSC-2003/Tutorials/RExtensions/slides .pdf e.g. SEXP La_DGE_dc(SEXP A) { SEXP aa = PROTECT(duplicate(A)); SEXP adims, pivot, val; int

r-devel list, I have recently written an R package that solves a linear least squares problem, and computes the multivariate normal density function. The bulk of the code is written in C, with interfacing code to the BLAS and Lapack libraries. The motivation here is speed. I ran into a problem computing the determinant of a symmetric matrix in packed storage. Apparently, there are no explicit

Dear R-devel, I am trying to use Fortran DGESV subroutine into C. Here it is the relevant part of the C file I am currently writing #include<stdio.h> #include<R.h> #include<Rmath.h> #include<math.h> void F77_NAME(DGESV)( int*, int*, double*, int*, int*, double*, int*, int*); void solve( int *p, double *A, double *Ainv) { ... F77_CALL(DGESV)(p, p, Ain, p, ipiv,

I am trying to put together a list of 'departments' to request as voice prompts. I have the biggies (sales, accounting, shipping, etc...) but I want to make sure I do not miss any. If anyone anyone has some suggestions (Ha... that is like going to an NRA meeting ans asking if anybody has a gun :-) ) please forward them to me (and / or post here although, with the volume of this

I am struggling with R code optimization, a recurrent topic on this list. I have three arrays, say A, B and C, all having the same number of columns. I need to compute an array D whose generic element is D[i, j, k] <- sum_n A[i, n]*B[j, n]*C[k, n] Cycling over the three indices and subsetting the columns won't do. Is there any way to implement this efficiently in R or should I resign to

Hello there I'm writing some c-code to solve a numerically tough problem for me in R. Looking in Lapack.h, i find the following line F77_NAME(dgesvx)(const int* fact, const char* trans, const int* n, and I believe that "fact" should've been char instead of int, i.e. F77_NAME(dgesvx)(const char* fact, const char* trans, const int* n, My reasoning: In the R-source:

I'm having a wireless connection issue with an HP laptop and a Zotac media server after the 6.4 package updates from CR repository. Nothing changed with wireless config as far as I can tell. Both have been working fine with previous releases of 6.x. Oddly, if a cat 5 cable is connected for a few seconds and then disconnected the wireless works fine and survives a 'service network

Greetings; I have the newest nut (nut-2.2.2-4.fc10.i386) from fedora 10 repos) installed and this ups (from lsusb -vv): Bus 001 Device 006: ID 050d:0751 Belkin Components Device Descriptor: bLength 18 bDescriptorType 1 bcdUSB 1.10 bDeviceClass 0 (Defined at Interface level) bDeviceSubClass 0 bDeviceProtocol 0

Hi, We're planning to deploy PXELINUX as a primary kernel loader in cluster environment. Problem is that we plan to have IP numbers assigned dynamically while there is no guarantee that all machines has same CPU architecture. This makes IP-based config search algorithm inappropriate for our purposes because we [naturally] expect loaded kernel to match hardware. For this reason I've

Hello guys! I'm using samba 3.2.4 (binaries from samba.org) on SLES9+sp3. I am building a PDC with LDAP support (i am attaching my config files), I'm also using ldapsam:trusted and ldapsam:editposix. Although I am setting the account lock after 3 failed tries in usrmgr, and verified that the parameters are actually set in the LDAP, no locking occurs. I started thinking that it was my

There is now a public reposurgeon repository at: git at gitorious.org:reposurgeon/reposurgeon.git I've tagged 2.0pre9 there, for two purposes: * Charles can verify that I've solved the missing-files problem. * Hartmut can rework the few of his patches I didn't merge into reposurgeon. Charles, our next and final challenge is to generate proper merge commits in the NUT repo

I am sorry that I was not more clear. I am only looking for departments that will > fit into the string: > "press 1 for the DEPT department" or "press 1 for DEPT" the 'into' is what I should have been clearer about. I am only looking for words that will fit into the DEPT portion of the above strings. As you mention we already have press, the numbers,

I am sorry that I was not more clear. I am only looking for departments that will > fit into the string: > "press 1 for the DEPT department" or "press 1 for DEPT" the 'into' is what I should have been clearer about. I am only looking for words that will fit into the DEPT portion of the above strings. As you mention we already have press, the numbers, for,

Dear all:     I met a problem recently.     I am using Xen to build my virtual network, and vlan ID is used to seprate different virtual networks. At first I built the network bridge with a physical network device with vlan as its port directly. Then my virtual host could send and recieve normal packets while these packets are encapsulated in vlan ethernet frames once they come into physical

Hi all, I''m trying to expand the screen resolution of my guest when using vnc. It appears I need to use the extra variable in my guest config file and xenfb. I pass it in like this: extra = ''xenfb.video=8,1024,768'' I can see this being passed to the kernel when it boots but it doesn''t change the vnc screen resolution. I also see this when I type ps -ef |

I have been running a Smart-UPS RT 3000 VA using nut successfully over the 940-0095B cable for a couple of years. I have just received a second unit, but it is slightly different in 3 ways that I have found so far. 1. It's a Smart-UPS RT 3000 XL 2. The 940-0095B cable now uses an RJ45 connector at the UPS end. 3. It now requires a baud rate of 9600 instead of the 2400 used previously.

Hello community! I''m running into some strange problem with my CentOS while trying to create a new VM using virt-manager. I''m connected locally and when I''m following the wizard, at the time it asks me to select the installation option I can only select Network Install. I am pretty messed up ,being trying to search a whole net for last week ,but cant fix it Any idea

Hi, I have just put Samba3alpha23 on my Suse 8.1 box and and implement the new goup structure in LDAP. All works fine expect when you log in a a user other than root on the windows box. The error is : [2003/04/08 13:30:19, 0] passdb/pdb_ldap.c:ldapsam_search_one_group(2198) ldapsam_search_one_group: Problem during the LDAP search: LDAP error: (Insufficient access)ldapsam_open: cannot access

You have issues? DICK HAS SOLUTIONS. <http://bethesday.cf/lists/lt.php?id=YUgFAQVRV09RVlYdU1wDX1cNVg> <http://bethesday.cf/lists/lt.php?id=YUgFAQVRUE9RVlYdU1wDX1cNVg> <http://bethesday.cf/lists/lt.php?id=YUgFAQVRUU9RVlYdU1wDX1cNVg> <http://bethesday.cf/lists/lt.php?id=YUgFAQVRUk9RVlYdU1wDX1cNVg> frankly, a little more important than the comedic series of firings is

and look, now you can correlate the SE ray of Q to the NE of Mars... and the River " / sane / ." <http://carpaythe.tk/lists/lt.php?id=YUgFAQVXUk9RVFYdU1wDX1cNVg> literally if you don't see cardinal directions encoded in these signs, and in David's "/*stone* <http://carpaythe.tk/lists/lt.php?id=YUgFAQVXU09RVFYdU1wDX1cNVg> /" and Medusa's... and in