similar to: CPU benchmarking tools

What is the best way to benchmark disk IO? I'm looking to move one of my servers, which is rather IO intense. But not without first benchmarking the current and new disk array, To make sure this isn't a full waste of time. thanks

Recently I posted to this list with a question about using the Intel 10.1 compilers in building R and one response was basically, "why in the heck would you want to do that?" The answer is that my sysadmin believes that there will be a performance boost with the Intel vs. Gnu compilers on our Linux cluster, of which I am one of many users. Wanting to be a good citizen and use my machine

Hi.. I am using R as a user, another group built everything I am using. But I need to install some packages and my only internet access is via a web-proxy. I have hunted though the docs and I'm not finding anything on setting a proxy in the package install command. Any help would be really appreciated. Thanks Sue Susan Caskey International Biological Threat Reduction Sandia National

I am doing some testing in Samba 3.0. I am using security=ADS. I am wondering if Samba has any support for cross-realm trust. For example, I have one AD forest SANDIA.GOV that has trust with SANDIA2.GOV. I have the Samba server on linux.sandia2.gov. I have a local user account on linux.sandia2.gov called user. When I log into a win2k client as SANDIA2.GOV/user and connect, it works fine.

Another question some of you may help me make decisions on. I've been doing some reading that indicates that having HT turned on in this dual xeon machine might actually slow down the computing process rather than speeding it up. I rebooted this a.m., and turned HT off, just prior to my main application run. One thing that might be of note, this application is using OMP for utilizing

Hi all, Do you have any recommendation about benchmarking tools on Linux virtual machine for measure the potential performance hit by virtualization, especially on multi-threads computation, since I doubt if the CentOS VM can fully make use of the 32 vCPUs (out of 64 physical cores) that I allocated to it. Regards, Allen 2014-11-05 Allen Qiu

Prof. Harrell, My name is Armida Carbajal, I'm a graduate student intern at Sandia National Laboratories (SNL) and am conducting some research for my thesis project at the University of New Mexico in Statistics for SNL. My project entails a logistic regression and I wanted to create a classification table like the one found in SAS using the function CTABLE. I was running out of ideas on

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Jan, I'm forwarding this message to the rest of the developers. Hopefully one of them will have a good answer to your question. --------- Does someone want to take this one? Just make sure you copy him on the answer, as he's not on the list. jack. ----- Forwarded message from Jan.Tangring@et.se ----- From: Jan.Tangring@et.se To: jack@icecast.org Subject: spectral band replication

Dear r-help, Is there any available description of the components of lqs objects found in the package "lqs"? > names(slts) [1] "crit" "sing" "coefficients" "bestone" [5] "fitted.values" "residuals" "scale" "terms" [9] "call"

Why is class(spectrum[["Ion"]]) after this "factor"? spectrum <- cbind(spectrum,Ion=rep("", nrow(spectrum)),Deviation.AMU=rep(0.0, nrow(spectrum))) slowly going crazy ... Joh

Hi all, On theserverside.com there is an article describing an interview with Bruce Tate, where he calls Java dead like Cobol. See: http://www.theserverside.com/news/thread.tss?thread_id=39066 However in the comments, some guy comes up with a good point: He states the following: <quote> I couldn''t come up with a viable enterprise quality/grade deployment platform for RoR. Even

For the command 'spectrum' I read: The spectrum here is defined with scaling 1/frequency(x), following S-PLUS. This makes the spectral density a density over the range (-frequency(x)/2, +frequency(x)/2], whereas a more common scaling is 2? and range (-0.5, 0.5] (e.g., Bloomfield) or 1 and range (-?, ?]. Forgive my ignorance but I am having a hard time interpreting this. Does this mean

> > I am talking about the original sweep. > > The original sweep stops pretty close to 24 kHz. I mean the original sweep _as_encoded_, sorry.

I have mad a for loop to try and output values which i have named spectrum. However, I cannot seem to get the answers to come out as a vector which is what i need. They come out as separate values which I am then unable to join together. Thank you for(f in seq(0,0.5,0.1)) { sigmasqaured <- 1 i = complex(real = 0, imaginary = 1) spectrum <-

Hi, I am having some problem with new version of GlusterFS-2.0.1 while copying using "apache" user. sudo -u apache cp -pvf zip/* test/ getting the message cp: getting attribute `trusted.glusterfs.afr.data-pending' of `zip/speccok1ma131231824637.zip': Operation not permitted `zip/speccok1ma131231824776.zip' -> `test/speccok1ma131231824776.zip' No problem while

I am reading some documentation about Cross Spectrum Analysis as a technique to compare spectra. My understanding is that it estimates the correlation strength between quasi-periodic structures embedded in two signals. I believe it may be useful for my signals analysis. I was referred to the R functions that implement this type of analysis. I tried all the examples which generated a series of

Buenas a todos. No me queda del todo claro si éste es el foro en el que preguntar o debería ser otro, ya que incluye cosas que van más allá de R. Sepan disculpar si me estoy excediendo. Estoy trabajando con RStudio y quiero generar un documento de salida en PDF; en ese documento tengo bastantes tablas anchas que no entran usando knitr::kable(la.tabla.ancha) Sí salen perfectamente en HTML

We are testing some simple low bandwidth video and audio broadcasting using real server and client softwares. So, for quick check and simplicity, we were plunking along TESTING on an 3.2GHz XP box and I noticed frames were getting dropped on the broadcast just for resizing a window on the screen during the session. Talk about totally lame... I know this can be a big deal and start conflicting

Hi, I'm wondering why the spectrum() phase of quadrature couple isn't purely +/-pi. But mostly, I'm looking for a recommended way to take a 2-D spectrum and convert it into a single complex array. Kindly consider: # 10 Hz sine wave 10 seconds long sampled at 50 Hz deltaT = 1/50 t = seq(0, 10, deltaT) w = 2 * pi * 10 x = ts( sin( w * t ), deltat = deltaT ) y = ts( sin(