Guy Tel-Zur's Blog

I just installed Fedora Core 6. The WiFi was not detected (once again :( ). Here are the steps to overcome this problem: 1) Find the type of card installed on your laptop by lspci -v : 0c:00.0 Network controller: Broadcom Corporation Dell Wireless 1390 WLAN Mini-PCI Card (rev 01) Subsystem: Dell Unknown device 0007 Flags: bus master, fast devsel, latency 0, IRQ 177 Memory at dfdfc000 (32-bit, non-prefetchable) [size=16K] Capabilities: [40] Power Management version 2 Capabilities: [58] Message Signalled Interrupts: 64bit- Queue=0/0 Enable- Capabilities: [d0] Express Legacy Endpoint IRQ 0 Capabilities: [100] Advanced Error Reporting Capabilities: [13c] Virtual Channel 2) Download and install the latest ndiswrapper (ndiswrapper-1.27.tar in my case) # cd ndiswrapper-1.27 # make uninstall # make # make install # lspci -n [root@localhost DRIVER]# ndiswrapper -h install/manage Windows drivers for ndiswrapper usage: ndiswrapper OPTION -i inffile install driver described by ...

I installed CentOS 4.4 and was surprised to find out that the wireless connection was not working. After some Internet searching I did the follwing two steps which solved the problem: 1) Installed the IPW2200 firmware 2) Installed the WiFi Radar Enclosed are screen shots that summerise all the ingredients and the successful happy end

The recepie below may not be the simplest but this is what I had discovered while learning this subject From the browser which holds your certificate make a bakup that will save it in p12 format. If you are working under Windows, this is the right moment to FTP it to Linux where life are easier, then proceed from you Linux computer by converting the *.p12 certificate to *.pem format: openssl pkcs12 -info -in guy_cert_iucc_expired.p12 -out ~/.globus/usercert.pem (don't forget BTW to chmod 644 this file) then, extract the DN by: /usr/local/globus-4.0.2/bin/grid-cert-info -subject in my case the result will be: /C=IL/O=IUCC/CN=IUCC/emailAddress=ca@mail.iucc.ac.il which is my DN actually you can simply grep the string subject from usercert.pem Good luck

The following work was done on "titan": [ globus@titan globus-4.0.2]$ export GLOBUS_LOCATION=/usr/local/globus-4.0.2 [globus@titan globus-4.0.2]$ $GLOBUS_LOCATION/setup/globus/setup-simple-ca WARNING: GPT_LOCATION not set, assuming: GPT_LOCATION=/usr/local/globus-4.0.2 C e r t i f i c a t e A u t h o r i t y S e t u p This script will setup a Certificate Authority for signing Globus users certificates. It will also generate a simple CA package that can be distributed to the users of the CA. The CA information about the certificates it distributes will be kept in: /home/globus/.globus/simpleCA/ ERROR: It looks like a CA has already been setup at this location. Do you want to overwrite this CA? (y/n) [n]: y The unique subject name for this CA is: cn=Globus Simple CA, ou=simpleCA-titan, ou=GlobusTest, o=Grid Do you want to keep this as the CA subject (y/n) [y]: Enter the email of the CA (this is the email where certificate requests will be sent to...

cd to: /home/condor/MonaLisa/Service/CMD then type: [condor@grid4 CMD]$ ./MLD start Password: Starting UPDATE ..........OK Trying to start MonaLisa.Please wait...STARTED [ PID == 4427 ] or better, as root: Usage: /etc/rc.d/init.d/MLD [start|stop|restart] Then enjoy the plot from the client:

We wanted to do some benchmarks about file transfers between Israel and Singapore. Here is my way to create a big file, using Octave (Matlab should work as well): -bash-2.05b$ cat ./big.m mat=ones(1,1000*1024*1024/8); size(mat) save -binary OneGig.dat mat # here are a few examples: -bash-2.05b$ ls -l -rw-r--r-- 1 tel-zur tel-zur 1000M Jun 23 18:19 OneGig.dat You are welcome to try, but hey! Give me a credit ok ? :) Here is an update to this post (Nov.16,2006): The method above can be called the " Physicist Way ", Now I will describe the " Computer Geek Way ", which is much more elegant of course: dd if=/dev/zero of=one_gig_file bs=1M count=1000 That's it!

The 3rd IGT HPC work group meeting will take place on Wednesday, June 21, 15:00-17:00 For further details click on the link or visit the IGT web site then click on "Next IGT Events"