gilbou is currently certified at Journeyer level.
Name: Gilbert Fernandes
Member since: 2002-09-12 15:20:44
Last Login: 2008-03-11 15:26:55
Homepage: http://pagesperso-orange.fr/bsdcow/
Notes:
i work for the cnrs laga
i am a sysadmin/netadmin, i love cryptography
and the C
langage.
i hate linux and love debian (it is possible,
trust me)
netbsd rules my world :)
all my code is published under another name. so dont come
here to find which projects i do participate in. i know this
is not going to make it easy to rate me over my
participation or code, but please understand that's my
choice. i am too ashamed of code i write and that's the only
way i have found to be able to give code freely and be at
peace with myself.
use gnupg to contact
me
if you work for the cnrs you can directly contact me by
using my public
key (please encrypt && sign)
Projects
Articles Posted by gilbou
Recent blog entries by gilbou
11 Mar 2008 (updated 11 Mar 2008 at 15:26 UTC) »
been watching the sarah
lacy disaster. she should get fired. how can someone so
incompetent and selfish claim herself to be a journalist...
i have never ever seen an interview with someone behave so
unprofesionally, talking of herself and always making closed
questions. the facebook guy even told her : "perhaps it
would get more interesting if you would ask.. some
questions" (!!) she clearly wanted it to be all about her
and she later even told the public to "screw" itself. this
my friends is having yourself revealed to the world for what
you really are.she kept interrupting the guy all the time
(the crowd started to talk about it and they could not
believe it). she asked no interesting question, none. she
kept making some bold statements, talking to the crowd in
what i have to call a vulgar way.
worst interview
ever.
just watch
the mess and judge by
yourself.
lucasr : check joshua redman's
albums. i started jazz with those. love it.
5 Mar 2008 (updated 5 Mar 2008 at 19:25 UTC) »
got a new video card, a nvidia 8600
gt. the overclocked model from club3d (it's in sweden i
think). it's not really to get a better world of warcraft
from linux (works like a charm by the way, on debian etch
4.0 32 bits + cedega 6.0.5). i had a 7900 gt previously and
could not try to play with Cuda.
at work (cnrs) we
got a cluster. and its admin bought two tesla
cards from nvidia which are dedicated to mathematics (128
threads par cpu, two per card). the good thing about it and
compared to the ati solution (this is gonna change very soon
i think under's amd guidance) is we use nvcc which are
wrappers (not very clean if you dive your nose in) around
gcc. it's moving fast. first, each card offers us 500 Gflops
so we have a theorical 1 Tflop with just two cards loaded on
two machines. it's not very portable and you really need to
know the architecture behind it to have it work properly.
the first week we got the cards was funny. once the card was
plugged the machine was not even booting. it only worked on
a very very few specific dell machines. after a nvidia
developer gave us some daily code, it finally worked. well
the machine was booting but once the nvidia's cuda driver
was installed it did not see the card. it took over two
weeks to have the cards available from debian on the cluster
;) and of course all pre-packaged stuff is only for redhat,
suse.. well. i am a bsd monk so i really dont like linux.
but god i do love debian (i never thought i would ever say
that). the nice thing about the whole thing is you buy a
cheap video card, and you can from linux write cuda code.
then, we just move that code to the cluster where the tesla
cards run it with their raw computing power. that's cool to
be able to compile and run it on small scales and then just
load it on the cluster for full range calculations. the only
thing that really annoys me if that most Cuda functions are
UPPERCASE like this and i got a happy hacking keyboard
without capslock key... :/
well tonight i'm going to
install and try at home for the first time to use cuda on my
8600 and i'd like to implement something easy like a md5
hash or so. and then upload it to the cluster but it's not
really something you can get scalar execution from (well,
it's a stream you work upon so it's gonna be disk-bound in
performance).
another problem are mathematicians. most of
them if not all know how to use matlab or libraries to their
fields of work (petsc, and so on) and for cuda to really
work it has to be as transparent as possible. most know how
to write C code, but we're not really seeing them wanna
learn the inners of those tesla cards to get real fast,
optimized scalar code to run on those gpus. we need either
fortran libraries that use as much cuda as possible or to
have as much as possible matlab functions to be redirected
to the gpu through some addon/lib for matlab. most of our
mathematicians do code, but their work is mathematics. not
spending days the nose deep in C with the tesla architeture
in mind for best performance. hope nvidia will improve this
on those parts :)
5 Feb 2008 (updated 6 Feb 2008 at 00:26 UTC) »
im pissed off. really. i got an ibm thinkpad x30. works
fine under netbsd. i can put a YEARS old netbsd or openbsd
or whatever on this machine, and everything works. since
last week i have tried on this machine : debian 4.0 etch,
lenny and i just finished install of unstable. no network.
nothing. the ethernet plug is there, lighted, and dhclient
fails and never gets any answer. wifi doesnt work either.
how can a netbsd years old have everything to work from this
piece of crap, and the latest 2.6.22-3 kernel and debian
unstable cant even get a fscking dhclient to work ? it's the
third time i try to install debian on this machine and it
either gets stuck on the login screen of gnome because the
orinoco drivers gets nuts (debian lenny, debian etch) or the
eth1 gets no answer from the dhcp, while another box on etch
4.0 much more recent (asus n2m32 sli...) works fine. i
really hate, hate this. i cant believe this crap recent
kernel is unable to have this machine work on default
install. been searching for over an hour with google,
there's nothing about the thinkpad x30 having problems with
debian anywhere. ethernet is intel 82801CAM (ICH3) PRO/100
VE (LOM) (rev 42). this is why i hate linux, and love debian
at the same time. debian is wonderful at work, we just put
it everywhere. but this piece of crap keeps burning me when
any several years old or the latest snapshot of any bsd just
works fine with no config, no kernel compilation out of the
box. and for the third time tomorrow i guess i will have no
choice but to remove debian and get back to bsd. i feel like
killing penguins at close range with great violence and
blood everywhere.
searching again and again i found people with the
same problem
http://ubuntuforums.org/archive/index.php/t-182618.html
http://www.webservertalk.com/archive99-2007-6-1910758.html
5 Feb 2008 »
installed under debian unstable a xps from dell, model
m1730. freaky machine. it runs a dual core from intel, and
is loaded with two nvidia 8700M GT video cards with SLI link
and.. a PhysX card. my god. after a 2.6.22 kernel install, I
added the kernel headers and installed the nvidia 169.09
drivers. what is strange is on the day before, I did the
same driver install on a very same debian unstable snapshot,
and two scripts located in /etc/init.d, namely nvidia-kernel
and nvidia-glx, were screwing the driver on each reboot. I
had to rm those two files to keep the 169.09 working on the
dell laptop (a d630). on the xps, after the kernel module
compilation and install, opengl 32 bits install, those two
scripts were not present in /etc/init.d. if you are
installing the nvidia drivers and they break on reboot, rm
the nvidia-* scripts from /etc/init.d ;)having the SLI to
work was very easy. edited the xorg.conf and forced the
MultiGPU option to yes and selected AFR (alternate frame
rendering) as method rather than Auto because in this mode
the SLI/Dual GPU rendering will only work if the application
being run is recognized.
been installing OCS and
Munin-client on every box on the network at the CNRS here
and it's a pretty good stuff. Problem is the load on the
processor on the server side goes up for each machine we had
to Munin... and it goes up a little too fast 8)
26 Jan 2008 »
up to now i used cedega from debian. worked ok but i
wanted to check another distro. so i downloaded a fedora
core 8 because it has a dvd so i could avoid downloading
most packages to install (you have such considerations when
you only have a slow 1 mbit link). what a piece of crap. i
install it, then the update says there's updates to do. and
of course, it fails. it first crashes and asks me to report
a bug, then does not crash but is unable to resolve
dependencies, then it seems to work but asks me a cdrom that
does not exist. i installed from dvd and it asks me for cd
number 1. i insert the install dvd, and it refuses to use
it. what the fuck ? so they currently distribute an
operating system install media which if you install in the
default setting without touching anything, is unable to
update, does not even recognize its install media and asks
for a disk you dont have. yeah, sure. well after 30 min
install and 10 minutes of crashes, error and stupid way of
working, i got rid of that crap. im gonna put the debian
back where it was, and aptitude update/upgrade and basta.
170 older entries...
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