Apr 19

things to come It is a long time since my last post. I have only one course this period, parallel programming. Very good, useful course.

And spring is coming, I decide to go to Helsinki at the end of this month. I have been in Uppsala for 9 months, so I hope it will be a nice trip.

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Mar 29

Summer vocation is approaching and I am very excited. I searched in several websites to find cheap flight ticket. Finally, I booked ticket in Seat24.se. It’s easy to finish all the steps. I told my mother immediately.

However, I got a call from Seat24.se the day after I booked (that’s today). She said the price increased 600kr. What? I have already paid, and now, you wanted more? I refused to pay another 600kr.

Now, my ticket is gone. And my money has not returned back. I hope I can receive it tomorrow, maybe.

PS. I get my money back today, 1th April, 3 days after I received that call.

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Feb 17

Each new day is a blank page in the diary of your life This is my first time using high performance machine. Although the machine is only for student, and of course, it is not good as those pro machines, it is still a good experience for me.

ssh remote machin, returns:

Last login: Wed Feb 17 15:02:15 2010 from nl103-144-35.student.uu.se
———————————————————————–

__  __          ___
/\ \/\ \        /\_ \
\ \ \ \ \     __\//\ \      ___     ___     ___ ___       __
\ \ \ \ \  /’__`\\ \ \    /’___\  / __`\ /’ __` __`\   /’__`\
\ \ \_/ \/\  __/ \_\ \_ /\ \__/ /\ \L\ \/\ \/\ \/\ \ /\  __/
\ `\___/\ \____\/\____\\ \____\\ \____/\ \_\ \_\ \_\\ \____\
`\/__/  \/____/\/____/ \/____/ \/___/  \/_/\/_/\/_/ \/____/

__                _____    ____
/\ \__            /\  __`\ /\  _`\
\ \ ,_\    ___    \ \ \/\ \\ \,\L\_\
\ \ \/   / __`\   \ \ \ \ \\/_\__ \
\ \ \_ /\ \L\ \   \ \ \_\ \ /\ \L\ \
\ \__\\ \____/    \ \_____\\ `\____\
\/__/ \/___/      \/_____/ \/_____/

Interactive cluster at Uppmax, Uppsala Universitet
Access node; os1

———————————————————————–

Hardware:
IBM X3455 dual Opteron 2220SE, 2.8GHz nodes. 4*10=40 cores
8GB RAM, Infiniband and Gigabit interconnect

Infiniband is not available for MPI programming due to system problems

Software:
Scientific Linux SL release 5.2, kernel 2.6.18-92.1.18.el5
SGE version 6.2, Grid Engine queue system
“man sge_intro” for an overview.
GCC version 4.3 c,c++,fortran and java
module load gcc
PGI version 7.2 & 8.0, 64 bit compilers (C,C++,F77,F95,HPF)
module load pgi
Intel version 10.1 & 11.1, 64 bit compilers (C,C++,Fortran)
module load intel
MPI, OpenMPI libraries, default 1.2.9, 1.3 available
module load pgi openmpi
module load gcc openmpi
mpicc or mpif90 to compile
mpirun to execute.
qsub -pe dmp8 16, to submit a 16 slot mpi job
openMP is available in pgi, intel and gcc

QUEUES and PEs:
os: 160 slots main queue (overbooked)
-pe dmp NN, distributed on nodes, 16 slots per node (4 cores)
-pe smp NN, shared memory, 1 single node for up to 16 threads (4 cores)

User Limits:
The login nodes are intended for short test runs only, max cputime is 30min

INTERACTIVE:
Use qsh to request a interactive job and recive a xterm.
e.g. qsh -l h_rt=01:00:20

**NB qlogin dont work at the moment use qsh**
(Use qlogin to execute an interactive session without starting a xterm. )

NB X-forwarding is working!
(If you have logged in with “ssh -X os.uppmax.uu.se” !!!)

Dont forget to request h_rt

————————————————————————–

News:
2009-11-20   os6 restarted due to system problems

2009-10-7/8  Service stop
New file server “bubo” introduced for all uppmax storage.
Your home directory is now in /bubo/home/h?/user.
Refer to this using “$HOME” in your programs.
To ease the transition we have defined symbolic links so that the old
directory names are usable for a short time.

2009-07-07   Compilers: PGI is updated to 9.0, default is kept as 8.0
If you want the latest version use “module load pgi/9.0″
Intel is updated to 11.1 (build 038), 11.0 (build 084) is kept as default
If you want the latest version use “module load intel/11.1″

2009-03-17      Infiniband removed from openmpi due to stability problems

2008-11-28      OS-kluster is reinstalled with SL 5.2
R is now a module to run R please load the module first
“module load R”
Sun Grid Engine updated to 6.2

I use bold font to indicate hardware.

BTW, my knowledge of Vim helps me a lot. I like Vim :)

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Nov 23

在国内向国外寄信的时候,会得到一个邮件编号,利用这个编号就可以查询到邮件现在的位置。

国内的部分可以在183查到,链接在这里。把编号填进去就可以追踪到邮件在国内的位置。

国外的部分需要在瑞典的邮政网上查询,链接在这里,是瑞典文的,如果看不懂可以用Google Translate翻译。

不过有一段时间是查询不到,也就是从国内到国外的过程,这里只能等了。

至于邮寄到其他国家的邮件,一样可以查询,只不过国外的网站需要查询。在google.com上以国家和post为关键词搜索,一般第一条就是了。

written by Kyle Wu \\ tags: ,

Oct 29

Logic Programming :

课程用书:

Prolog, Programming for AI, part 1
Prolog, Programming for AI, part 2

Test Methodology:

课程用书:

Introduction to software testing

以上链接是从网上搜得,如果链接失效,请自行搜索。

written by Kyle Wu \\ tags: , ,