Author: Martin Burheim Tingstad

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Panna Cotta

Porsjoner: 6

Ingredienser
4 ½ stk gelatinplater
2 stk vaniljestang
7 ½ dl kremfløte
2 ½ dl sukker

Bringebærsaus:
1 pk (225 gr.) frosne bringebær
100 g melis
2 ss sitronsaft

Slik gjør du
1. Legg gelatinplatene i kaldt vann i 5 minutter. Skyll de godt og klem ut vannet.

2. Snitt vaniljestangene på midten, skrap ut frøene.

3. Kok forsiktig opp fløte, sukker, vaniljestangen og innholdet i den. Ta det av platen, ta ut vaniljestangen, og rør inn gelatinen. Hell blandingen i seks små former eller glass. Avkjøl minst 3 timer før servering.

4. Ha tinte bringebær, melis og sitronsaft i en foodprocessor, kjør til massen er glatt og sil den.

Server desserten med litt frisk bærsaus og bjørnebær. Bjørnebær får du kjøpt frosne hele året. Kan lages 1-2 dager før servering.

http://www.matprat.no/gjester/gjesteoppskrifter/panna-cotta/

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Classloader getchas

try{
System.out.println(
ArrayUtils.class.getProtectionDomain().getCodeSource().getLocation().toURI()
);
for(URL url : ((URLClassLoader)ArrayUtils.class.getClassLoader()).getURLs()) {
System.out.println(url.getPath());
}
}
catch (URISyntaxException e) {

}

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Building an HPC Cluster on Gentoo

Install Torque and OpenMPI

USE=”server” emerge torque
USE=”openpbs” emerge openmpi

Configure Torque

‘pbs_server -t create’

rocky sbin # qmgr
Max open servers: 4
Qmgr: set server operators = root@localhost;
Qmgr: create queue batch
Qmgr: set queue batch queue_type = Execution
Qmgr: set queue batch started = True
Qmgr: set queue batch enabled = True
Qmgr: set server default_queue = batch
Qmgr: set server resources_default.nodes = 1
Qmgr: set server scheduling = True
Qmgr: quit
rocky sbin #

Now kill the pbs_server
‘killall -9 pbs_server’

Add lines per machines and CPUs here (I have 8 CPUs in localhost)
echo “localhost np=8” > /var/spool/torque/server_priv/nodes

Set your machine name (Rocky for me)
echo “rocky” > /var/spool/torque/server_name

Configure each node (Localhost for me)
nano /var/spool/torque/mom_priv/config

Add this content:

##################
arch x86
opsys Gentoo
$logevent 255
##################

Now start the server
/etc/init.d/pbs_server restart
/etc/init.d/pbs_mom restart

(You might get errors regarding pbs_server or pbs_mom allready running, just kill them.)

Now onto MAUI

Add ACCEPT_KEYWORDS=”~x86″ to /etc/make.conf

Download maui-3.3.tar.gz from http://www.clusterresources.com/product/maui/ (Requires registration)

put maui-3.3.tar.gz into /usr/portage/distfiles
emerge maui

Remove ACCEPT_KEYWORDS=”~x86″ from /etc/make.conf

References:
http://www.gentoo-wiki.info/HOWTO_Torque/Maui_-_grid_scheduler_and_resource_manager#Configuration

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SSHFs

Finally a tool that will let you mount your drives from anywhere in the world, all you need is the abilty to login via SSH.

Get it here: http://fuse.sourceforge.net/sshfs.html