INTEL e1000e driver

download
http://www.intel.com/support/network/sb/cs-009209.htm

Cloud reference model

Cloud reference model

[1] Security Guidance for Critical Areas of Focus in Cloud Computing V2.1 from: http://www.cloudsecurityalliance.org/

gmail aliases

Gmail doesn't offer traditional aliases, but you can receive messages sent to your.username+any.alias@gmail.com.

For example, messages sent to jane.doe+notes@gmail.com are delivered to jane.doe@gmail.com.

You can set up filters to automatically direct these messages to Trash, apply a label or star, skip the inbox, or forward to another email account.

GT200 performance

Here are the peak performance numbers for various parts:

                            Single Precision     Double Precision   Bandwidth
· GTX 260-216:   805 GFlop/s           67 GFlop/s             112 GB/s
· GTX 280:          933                        78                           142
· GTX 285:        1062                        89                           159
· GTX 295:        1789                      149                           224
· Tesla C1060:     933                        78                           102

references
http://perspectives.mvdirona.com/2009/03/15/HeterogeneousComputingUsingGPGPUsNVidiaGT200.aspx

html test

test

CentOS VNC server configure

#修改 /etc/sysconfig/vncserver
#修改 ~/.vnc/xstartup

tighvnc 連線時 IP:terminal:port number

terminal 設為1 表示原root terminal使用, 不設定為由2 開始

附註, Centos6 之後是預設vino 需登入後才能remote loging.

XRDP 設定
http://hpclab.cs.pu.edu.tw/wiki/index.php/Xrdp
http://pulipuli.blogspot.tw/2008/08/windowslinuxxrdpvnc-server.html

references:
http://lerax.sytes.net/LERAX/index.php?pl=593&sid=9695925f
http://blog.weithenn.org/2009/04/centosvnc-vnc-server.html

last update: 2012/07/11

Clean linux ARP cache

一、這樣可以清除單一IP的ARP緩存
arp -d IP

二、清除192.168.0.0網段的所有暫存

for((ip=2;ip<255;ip++));do \ arp -d 192.168.0.$ip &>/dev/null; \
done

三、清除所有ARP

arp -n|awk '/^[1-9]/ {print "arp -d "$1}' | sh


Reference:
http://www.linuxzh.org/Linux/arp-clean.html

PBS Environment Variables

In addition to the above, the following environment
variables will be available to the batch job.

PBS_O_HOST
the name of the host upon which the qsub command is running.

PBS_O_QUEUE
the name of the original queue to which the job was submitted.

PBS_O_WORKDIR
the absolute path of the current working directory of the qsub command.

PBS_ENVIRONMENT
set to PBS_BATCH to indicate the job is a batch job, or
to PBS_INTERACTIVE to indicate the job is a PBS
interactive job, see -I option.

PBS_JOBID
the job identifier assigned to the job by the batch system.

PBS_JOBNAME
the job name supplied by the user.

PBS_NODEFILE
the name of the file contain the list of nodes assigned
to the job (for parallel and cluster systems).

PBS_QUEUE
the name of the queue from which the job is executed.