similar to: openMosix and R: File I/O issues?

Hi there, We're currently attempting to explain a slowdown of an LVQ-type parallel analysis we're working on. We are benchmarking our analysis running over openMosix against the same running via SNOW for R. Both perform similarly on small datasets, but on large datasets SNOW drastically outperforms openMosix. However, these results are achieve running SNOW on the default RedHat

Apologies if this is the wrong place to post this question. In that event, please point me in the right direction. My question is whether or not I can use Xen with OpenMosix. The upshot of what I''m attempting to do is this: 1. Build a two to four node cluster using OpenMosix for "raw horsepower" 2. Use Xen on the OpenMosix cluster to divide the "raw horsepower" any

It's generally said that OM needs lots more swap than plain Linux. There has to be someplace to juggle processes around. We use 4 GB nodes with something like 12 GB swap; that plus round-robin logins to distribute home nodes seemed to solve a lot of our problems. To use oMFS to allow processes to write from the node they've migrated to you also need DFSA enabled. That sounds like a great

Memory could be an issue. The three nodes in the cluster we are using only have 512 MB. The machines are otherwise identical in terms of hardware. They are dual PIIIs (purchased from Penguin Computing in 2001). (If you need specs on motherboard etc, we can get that info together.) The installed operating system is RHEL-3, standard workstation with some additional libraries (e.g., all of the

Hi all, I was hoping to get some advice about a problem that I realize will be difficult to reproduce for some people. I'm running R 1.7.1 on an openMosix (Linux) cluster and have been experiencing some odd slow-downs. If anyone has experience with such a setup (or a similar one) I'd appreciate any help. Here's a simplified version of the problem. I'm trying to run the

hi, I seem to have a problem with the Linux xen-network driver leaking skbs. This is probably my own fault, upon resumption after migration I call this: void network_resume(void) { struct net_device* dev = __dev_get_by_name("eth0"); MOD_DEC_USE_COUNT; network_open(dev); } -- which works fine. However, in network_open() the call to NETOP_RESET_RINGS seems to clear all the

Hello. I''ve downloaded and burned the Xen DemoCD 1.2. It boots fine, and generally seems to work well. However, when I try to create a domain via xc_dom_create.py I get an ImportError (from a python module I''m guessing). Problem is that it can''t open the libxc.so.1.2 shared object. And sure enough, it''s not there. libxc.so is in /usr/lib, but not

Maybe this is a faq. but how? I pronounce it as "ZEN". in Japanese, it is same pronounce as "zen", a kind of Taoism. --- Okajima. ------------------------------------------------------- This SF.Net email is sponsored by: IBM Linux Tutorials Free Linux tutorial presented by Daniel Robbins, President and CEO of GenToo technologies. Learn everything from

Dear R People: Is there a binary version for rorca, please? Thanks, Laura mailto: lauraholt_983 at hotmail.com R Windows 1.9.0

Hi, While investigating why the Xen 1.2 Demo CD won''t boot on a particular laptop, I noticed the download image appears to be truncated. "isoinfo -d -i xendemo-1.2.iso" reports: Logical block size is: 2048 Volume size is: 294080 That would suggest the image size should be 294080 * 2048 = 602275840 bytes. However I only have 292376 * 2048 = 598786048 bytes. The web server

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In a quick search of the R website just now, I found no mention of a unit testing framework for R. I hope to find something in the style of Java's JUnit, or Python's unittest. Is such a thing available? Thanks, - Paul Shannon Institute for Systems Biology Seattle

I'm trying to track down a rather critical problem. This happens both on Debian's current unstable as well a from anoncvs built this morning, reinstalling MASS. Is anyone else seeing this or am I just broken and special? 609$ /home/Rdevel/bin/R R : Copyright 2004, The R Foundation for Statistical Computing Version 1.9.0 Under development (unstable) (2004-03-04), ISBN 3-900051-00-3 R

I know I have asked this before, but I am having trouble understanding the role of each component in the new 1.3 world: In 1.3 networking if Xen has no devices, and domain 0 owns and operates the NIC - does Xen have any role at all in networking for the guest OS''s? Which network device driver will a guest OS use? Do all the vnetif rules defined in Domain 0 now get interpreted by

I've been using a cvs2cl.pl (http://www.red-bean.com/cvs2cl), a nice little perl script to auto-generate GNU-style changelogs from CVS log information. This site also has a proposed XML format for changelogs, and cvs2cl can optionally produce this instead. Finally, they have an XSLT sylesheet that will convert the XML changlong format into an HTML/XHTML page. How about we borrow this tool

Yes, lots of packages do use C/Fortran code ... it would be great if there were more packages that are "pure R" especially since the advent of S4 classes and namespaces. Is it worth suggesting that we create a designation "pure R" for packages that have no external source code and encourage more of these? Indeed, now the number of packages is so big could they be classified to

Dear R-devel, My current research focuses upon sensitivity analyses which require [1] clusterings of patients in a baseline covariate X-space and [2] examining the distribution of within-cluster treatment differences in outcome. I have generated some primitive R code for this, but I really need to be able to interact with graphical displays of within-cluster information (local average

I'm seeing weird issues in methods initialization, i.e. loading marrayClasses loads Biobase, and when explicitly done, as in library(Biobase) library(marrayClasses) is fine, but when Biobase is loaded via a require statement in marrayClasses' .First.Lib, I end up with: Warning message: In the method signature for function "coerce", class "exprSet" has no

Anyone have any experience running OpenMosix on CentOS 3? Are you using a kernel custom built or from somewhere? Any maintenance headaches wrt kernel updates? Thanks in advance. -Alan -- Alan Sparks, UNIX/Linux Systems Integration and Administration <asparks at doublesparks.net>

As an R absolute beginner and an expert (very old) statistician and latex user, I'm interested in using R to produce AUTOMAGICALLY tables in latex format. I mean I would like to have the means to build an R procedure generating **FROM INSIDE** a table or a graph to be inserted directly into latex. I've read http://hesweb1.med.virginia.edu/biostat/s/doc/summary.pdf where the author speaks