The new utopic kernel prevent me from using hyper thread with matlalb and R

[Knut J Bjuland]

I have parpool in matlab and I have this test code in R.

n=16 # on my pc

library(lme4)
library(pbkrtest)
library(foreach)
library(doMC)
registerDoMC(n)
vertex=10000

foreach (vertex=1:n) %dopar% {
            print(vertex)
}

And watch top

ProblemType: Bug
DistroRelease: Ubuntu 14.04
Package: linux-image-generic-lts-utopic 3.16.0.26.20
ProcVersionSignature: Ubuntu 3.16.0-26.35~14.04.1-generic 3.16.7-ckt1
Uname: Linux 3.16.0-26-generic x86_64
NonfreeKernelModules: nvidia
ApportVersion: 2.14.1-0ubuntu3.6
Architecture: amd64
CurrentDesktop: X-Cinnamon
Date: Wed Dec 10 14:52:50 2014
InstallationDate: Installed on 2011-09-07 (1190 days ago)
InstallationMedia: Ubuntu 11.04 "Natty Narwhal" - Release amd64 (20110427.1)
SourcePackage: linux-meta-lts-utopic
UpgradeStatus: Upgraded to trusty on 2014-04-28 (226 days ago)