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More details will be available later, but we wanted to let ARSC users and other newsletter subscribers know:
The Arctic Region Supercomputing Center will be installing a Sun Microsystems high performance computing system running SuSE Linux. The system will consist of 952 AMD Opteron dual core 2.6 GHz processors (1904 total cores), yielding a theoretical system peak floating point performance of 9.88 teraflops. Four gigabytes of memory will be available per core. The compute nodes and the disk storage servers will be connected by a high performance Infiniband switch. In addition to this compute capability, Sun's recently-introduced x4500 disk technology will provide 144 raw terabytes of disk storage. The x4500 systems will use the Lustre file system to deliver high performance shared storage.
We anticipate installation of the Sun system this fall.
The Baseline Configuration (BC) Project of the HPCMP has been working to define consistent working environments across resources of the Modernization Program. The intent of this project is to allow users to compute productively and collaboratively when using the HPC resources at multiple centers.
Towards this end, ARSC has made several changes in the past few months on our allocated resources, iceberg and klondike.
The show_usage command displays standard allocation information about your projects. This information includes:
The "-s" option will show allocation information for all allocated ARSC systems.
Both klondike and iceberg now accept the standard BC queue names as well as "historical" ARSC queue names.
BC queue name priority -------------- --------------------- standard Standard priority urgent Urgent priority (requires special permission) high High priority (requires special permission) debug Debug priority background Background priority challenge Challenge type (requires challenge project status)
Several environment variables are now set:
ARCHIVE_HOST: the hostname for the system housing long term
storage.WORKDIR: the globally accessible temporary filesystem (same
as WRKDIR)ARCHIVE_HOME: the location of long term storage on ARCHIVE_HOST
(same as ARCHIVE)JAVA_HOME: the base directory where java is installed if available.PET_HOME: the directory containing tools installed by the PET
CE group.
ARSC Faculty Camp is an intensive series of seminars and hands-on experiences, presented by ARSC staff, UAF/ARSC Joint Faculty, and current users, which provides participants with assistance and expertise while they develop individual projects.
All ARSC users and potential users are invited to attend any lectures listed below.
Monday, 8/7
10:00 AM Performance Programming WRRB 009
Tom Baring
2:00 PM Debugging WRRB 009
Ed Kornkven
Tuesday, 8/8
10:00 AM Parallel Programming with OpenMP WRRB 009
Tom Logan
2:00 PM OpenMP Hands-On Session WRRB 009
Tom Logan
Wednesday, 8/9
10:00 AM Visualization of 3D Datasets WRRB 009
Sergei Maurits
2:00 PM Visualization of 3D Datasets WRRB 009
Sergei Maurits
Thursday, 8/10
10:00 AM Parallel Programming with MPI WRRB 009
Tom Logan
2:00 PM MPI Hands-On Session WRRB 009
Tom Logan
Friday, 8/11
10:00 AM Using netCDF WRRB 009
Kate Hedstrom
Monday, 8/14
10:00 AM IDL WRRB 009
Sergei Maurits
2:00 PM IDL Hands-On WRRB 009
Sergei Maurits
Tuesday, 8/15
10:00 AM Introduction to Amira WRRB 009
Sergei Maurits
2:00 PM Visualization Open Session WRRB 009
Sergei Maurits
Wednesday, 8/16
2:00 PM ARSC Future Technologies WRRB 009
Greg Newby
Presentations by George Washington University doctoral students in Electrical and Computer Engineering, highlighting their work during 10 weeks at ARSC this summer. Presenters are students of Dr. Tarek El-Ghazawi: Kun Xi, Yiyi Yao, Esam El-Araby, Mohamed Taher and Abdullah Kayi.
A:[[ I want to search for certain keywords in a monstrous text file.
[[ But for each "hit," I want to see, not just the line containing
[[ word, but a few lines **preceding** it as well. I think I could
[[ the write a perl script to do this, but is there another way?
#
# Thanks to Rich Griswold, Liam Forbes, Matthew Page, Lee Higbie
# and Jed Brown, all of whom know that GNU grep is a better answer.
# Here's a blend of their answers:
#
The GNU grep utility has a couple of options that should work for you.
'-A NUM' prints NUM lines after each group of matching lines
'-B NUM' prints NUM lines before each group of matching lines
'-C NUM' prints NUM lines before and after each group of matching
lines
--
So:
$ grep -B5 "cow tipping" file.ext
would show you 5 lines before each match of "cow tipping" in the file.
--
Especially with context matching, `--color=auto' is handy.
--
Editor's note: These options are only in GNU grep, which is available
on ARSC systems with the following caveats:
--On the ARSC IBM systems, GNU's family of grep commands is available
under /opt/freeware/bin/.
--On the Cray X1, they're in the coreutils module (execute,
"module load coreutils" to load this module).
--GNU grep isn't available on the ARSC SGIs.
Q:[[ I'm looking for a file that I changed a few minutes ago.
[[ Unfortunately I seem to have forgotten the name. Is there a easy
[[ way to search for any files in directory or subdirectory that have
[[ changed in the last 10 minutes?
[[ Answers, Questions, and Tips Graciously Accepted ]]
Contact:
Thomas J. Baring ARSC Web Specialist ph: 907-450-8619 Donald Bahls ARSC User Consultant ph: 907-450-8674 Arctic Region Supercomputing Center University of Alaska Fairbanks PO Box 756020 Fairbanks AK 99775-6020
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PO Box 756020, Fairbanks, AK 99775 |
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