Bassi (IBM POWER5 p575)
The NERSC IBM p575 POWER 5 system, named Bassi, is a distributed memory computer with 888 processors available to run scientific computing applications. The machine is named in honor of Laura Bassi, a noted Newtonian physicist of the eighteenth century.
Bassi Announcements
| Subject: |
[Users] Bassi and Jacquard Retirement Update |
| Author: |
Francesca Verdier <fverdier_at_lbl.gov> |
| Date: |
2009-12-16 09:16:12 |
| Dear NERSC Users,
Bassi and Jacquard are no longer scheduled to be retired on January 12,
2010. Rather, the intent is to retire these systems after all MPP users
have had access to Carver, the new IBM DataPlex system that will replace
Bassi and Jacquard. If you had an account on Bassi or Jacquard you will
have one on Carver but you will need to move your files there.
NERSC will plan on at least two weeks of overlapped availability on
Carver, Bassi, and Jacquard. Dates will be announced in the first
quarter of 2010 once they are firm.
Information on the Carver configuration:
http://www.nersc.gov/nusers/systems/carver/
Please note that Jacquard continues to be available with limited
support, meaning:
* no further software upgrades except those needed for security reasons
(this applies to Bassi as well)
* failed hardware will not be replaced (and could cause Jacquard to
become unavailable with no advance notice)
* can be decommissioned with 30 days advance notice to the user
community.
As communicated in an email on October 19, NERSC will not archive any
files that you have on Bassi or Jacquard. All files on both $HOME and
$SCRATCH will be deleted when the systems are retired.
If you need help archiving your files or have any questions or concerns,
please contact the NERSC consultants at consult@nersc.gov.
--
Francesca Verdier email: fverdier@lbl.gov
Department Head, NERSC Services phone: 510-486-7193
_______________________________________________
Users mailing list
Users@nersc.gov
|
| Subject: |
[Users] IBM iDataPlex to replace Bassi and Jacquard |
| Author: |
Francesca Verdier <fverdier_at_lbl.gov> |
| Date: |
2009-11-02 15:36:59 |
|
Dear NERSC users,
NERSC is pleased to announce that its newest high performance computing
resource will be an IBM iDataPlex, which will replace Bassi and Jacquard
in early allocation year 2010. The system, named after the American
scientist George Washington Carver, will consist of 3,200 computational
cores, configured as 400 nodes with 2 quad-core Intel Nehalem 2.67 GHz
processors and 24 GB memory per node. Carver's peak performance is 34.2
Tflops, which is about 3.5 times more powerful than Bassi and Jacquard.
Its interconnect is 4X QDR InfiniBand, configured as local fat trees
with a global 2D mesh. Every node will have a fully featured Linux OS
and all file systems (homes, project and scratch) will be hosted on the
NERSC Global Filesystem.
An overview of the Carver configuration is available:
http://www.nersc.gov/nusers/systems/carver/
More details and plans for early user access will be announced later.
Sincerely,
--
Francesca Verdier email: fverdier@lbl.gov
Department Head, NERSC Services phone: 510-486-7193
_______________________________________________
Users mailing list
Users@nersc.gov
|
| Subject: |
[Users] Bassi and Jacquard Retirement Notice |
| Author: |
Richard Gerber <ragerber_at_lbl.gov> |
| Date: |
2009-10-19 14:20:57 |
| Dear NERSC users,
Bassi and Jacquard are scheduled to be retired on January 12, 2010.
Effectively immediately:
* No new accounts are being created on Bassi or Jacquard. (Exceptions can be made upon request for
projects that require software that is not available elsewhere at NERSC.)
* No software will be updated unless required for system operation.
* No new software will be installed.
NERSC will not archive any files that you have on Bassi or Jacquard.
It is your responsibility to save elsewhere and/or archive data that you want to keep.
All files on both $HOME and $SCRATCH will be deleted when the systems are retired.
If you run jobs in the few days before retirement, you will be granted access
afterward to retrieve your results. Further details will be announced in December,
but if you do not plan to use Bassi or Jacquard again we ask that you archive your
data now to guard against possible last-minute failures.
If you need help archiving your files or have any questions or concerns, please
contact the NERSC consultants at consult@nersc.gov.
--
Richard A. Gerber email: ragerber@lbl.gov
HPC Consulting phone: 510-486-6820
National Energy Research Scientific Computing Center
Lawrence Berkeley National Laboratory
_______________________________________________
Users mailing list
Users@nersc.gov
|
| Subject: |
[bassi-users] Bassi update complete; MPI bandwidth problem fixed |
| Author: |
Richard Gerber <ragerber_at_lbl.gov> |
| Date: |
2009-09-10 10:49:31 |
| Dear Bassi users,
Bassi is back in service following Wednesday's system maintenance. The
changes made Wednesday
should not affect the way you use Bassi. You do not need to take any
action, but please report any
problems to consult@nersc.gov.
SUMMARY
----------------
Wednesday's system maintenance successfully corrected a problem that had
reduced the peak MPI bandwidth following the August 6, 2009 AIX upgrade.
The only change you
should notice is improved MPI and LAPI bandwidth. No action is needed on
your part.
WHO IS AFFECTED?
------------------------------
Everyone who uses the default NERSC RDMA settings (MP_USE_BULK_XFER=yes)
and the recommended
#@bulkxfer = yes directive in batch scripts may see a performance
improvement.
IMPLEMENTATION DATE
---------------------------------------
September 9, 2009; corrects a problem that started August 6, 2009.
IMPACT ON USERS
-----------------------------
Codes that have high message-passing bandwidth requirements between
nodes will see improved performance.
Codes with modest MPI bandwidth requirements may notice no change. Users
do not need to recompile nor
make any changes to their batch scripts.
TECHNICAL DETAILS
---------------------------------
NERSC monitoring detected that the peak point-to-point bandwidth between
nodes was reduced from about 3 GB/sec
to approximately 1.5 GB/sec. NERSC and IBM tracked down the problem to
incompatible versions of IBM software
(OS, AIX; the IBM Parallel Environment, PE; and the Low-level
Application Programming Interface, LAPI), which
disabled RDMA (Remote Direct Memory Access). An additional consequence
was to disable simultaneous use of
the two switch adapters on each node, thus reducing the peak bandwidth
by a factor of two.
The NERSC test system was updated and testing showed that the problem
was resolved. The following software
was then updated on Bassi on September 9, 2009:
LAPI updated to 2.4.6.5
PE updated to 4.3.2.9
HPS updated to 1.2.0.x
HPS is the IBM High Performance Switch.
Regards,
Richard Gerber
--
Richard A. Gerber email: ragerber@lbl.gov
HPC Consulting phone: 510-486-6820
National Energy Research Scientific Computing Center
Lawrence Berkeley National Laboratory
_______________________________________________
bassi-users mailing list
bassi-users@nersc.gov
|
| Subject: |
[Users] Bassi and Jacquard: 12 hours scheduled maintenance Tue Sept 29 |
| Author: |
Francesca Verdier <fverdier_at_lbl.gov> |
| Date: |
2009-08-31 13:12:42 |
| Dear NERSC users,
Bassi and Jacquard will be scheduled down from 7:00 AM to 7:00 PM on
Tuesday, September 29, for facility related work.
Sincerely,
--
Francesca Verdier email: fverdier@lbl.gov
Department Head, NERSC Se rvices phone: 510-486-7193
_______________________________________________
Users mailing list
Users@nersc.gov
|
| Subject: |
[bassi-users] Please delete unneeded files on Bassi /scratch |
| Author: |
Richard Gerber <ragerber_at_lbl.gov> |
| Date: |
2009-07-31 10:38:43 |
| Dear Bassi users,
The /scratch file system on Bassi is getting very full. Please remove
any files and directories in your scratch directory
that you no longer need. If the file system gets too full we will have
to start purging older files. We encourage you
to delete the files you don't need so we don't have to run automatic
purge scripts.
If you are no longer using Bassi, please archive, transfer, and/or
remove your files from the system. We expect Bassi
to be retired at the end of this year and it will help us greatly if you
are able to remove unwanted files before we
decommission the system.
Thanks,
Richard Gerber
--
Richard A. Gerber email: ragerber@lbl.gov
HPC Consulting phone: 510-486-6820
National Energy Research Scientific Computing Center
Lawrence Berkeley National Laboratory
_______________________________________________
bassi-users mailing list
bassi-users@nersc.gov
|
| Subject: |
[bassi-users] Gaussian 09 is available on Bassi now |
| Author: |
Zhengji Zhao <ZZhao_at_lbl.gov> |
| Date: |
2009-07-22 08:55:49 |
| Dear Bassi users,
Gaussian 09 version a2 is now available on Bassi, and has been set as
the default version. To use, do
module load g09
For more details about its usage, please visit our website.
http://www.nersc.gov/nusers/resources/software/apps/chemistry/g09/
Gaussian 03 will be continuously available on Bassi as a separate module.
Best regards,
Zhengji Zhao
NERSC User Services
_______________________________________________
bassi-users mailing list
bassi-users@nersc.gov
|
| Subject: |
[Users] Bassi and Jacquard plans |
| Author: |
Francesca Verdier <fverdier_at_lbl.gov> |
| Date: |
2009-05-05 19:33:04 |
| Dear NERSC Users,
NERSC has started a Linux cluster procurement to replace Bassi and
Jacquard. More details on this procurement will be communicated once
the Request for Proposals has been posted. Plans for decommissioning
these machines are:
Bassi will be decommissioned after the end of this allocation year
(which ends January 11, 2010).
Jacquard will be fully supported through June 9, 2009, and then will be
available at least through August 2009 with limited support, meaning:
* no further software upgrades except those needed for security reasons,
* failed hardware will not be replaced,
* can be decommissioned with 30 days advance notice to the user community.
Sincerely,
--
Francesca Verdier email: fverdier@lbl.gov
Department Head, NERSC Services phone: 510-486-7193
_______________________________________________
Users mailing list
Users@nersc.gov
|
| Subject: |
[bassi-users] Please delete unneeded files on Bassi /scratch |
| Author: |
Richard Gerber <ragerber_at_lbl.gov> |
| Date: |
2009-02-05 11:07:17 |
|
Dear Bassi users,
The /scratch file system on Bassi is getting very full. Please remove
any files in your scratch directory that you no longer need. The file
system is nearing the point at which we will have to start purging older
files. We would much prefer that you delete the files you don't need
than run automatic purge scripts.
Thanks,
Richard Gerber
_______________________________________________
bassi-users mailing list
bassi-users@nersc.gov
|
| Subject: |
[bassi-users] Bassi maintenance Thu, Jan. 29 10:00-20:00 PST |
| Author: |
Richard Gerber <ragerber_at_lbl.gov> |
| Date: |
2009-01-23 10:34:25 |
| Dear Bassi users,
Bassi will be unavailable Thursday, January 29 from 10:00 to 20:00 PST.
System support software will be updated.
Regards,
Richard Gerber
_______________________________________________
bassi-users mailing list
bassi-users@nersc.gov
|
| Subject: |
[bassi-users] Reminder: Bassi memory specification configuration changes |
| Author: |
Richard Gerber <ragerber_at_lbl.gov> |
| Date: |
2008-12-11 17:13:42 |
| Dear Bassi users,
Bassi was returned to service Thursday at 17:00 Pacific Time.
REMINDER: If your job is using fewer than 8 tasks per node, please make
sure your future jobs are configured to use the proper ConsumableMemory
value as outlined in an earlier notice:
http://www.nersc.gov/nusers/announcements/message_text.php?id=1102
The proper settings are available at
http://www.nersc.gov/nusers/systems/bassi/running_jobs/memory.php
Jobs that were already queued before the downtime should run
successfully. New jobs submitted after 17:00 Pacific Time on Thursday,
Dec. 11 must not contain the old settings for ConsumableMemory or they
may get killed or fail to start.
Regards,
Richard Gerber
_______________________________________________
bassi-users mailing list
bassi-users@nersc.gov
|
| Subject: |
[bassi-users] Important memory configuration changes on Bassi following downtime Thursday, Dec. 11 |
| Author: |
Richard Gerber <ragerber_at_lbl.gov> |
| Date: |
2008-12-03 16:04:08 |
| Dear Bassi users,
Bassi will be down for maintenance on Thursday, Dec. 11 from 10:00 to 16:00 PST.
During the maintenance we will make a change to the batch system that may
impact your jobs.
If you are currently setting the ConsumableMemory resource in your batch
scripts you will have to modify that value after the system returns
on Dec. 11, 2008. If you are using fewer than 8 tasks per node, please read
this message. If your jobs use 8 tasks per node and you are running successfully
now without explicitly manipulating the ConsumableMemory setting, you can
disregard the rest of this e-mail.
SUMMARY
The meaning of the value specified for ConsumableMemory will change.
Instead of referring to a per-task total memory value, ConsumableMemory
will refer to AIX small-page (4K pages) memory only. The appropriate new
values for your job - based on the number of tasks per node you use -
can be found at
http://www.nersc.gov/nusers/systems/bassi/running_jobs/memory.php
For jobs already queued when the system is taken down for maintenance, we
will manually adjust the setting and you do not need to take any action.
New jobs submitted with the old settings on or after Dec. 11, 10:00 PST will
either not run or may be killed prematurely.
BACKGROUND
Why are we making this change? We believe the new configuration will
result in a more robust system. Bassi's nodes are prone to failure when
a job quickly attempts to use memory far above the physical memory on a
node (32 GB, of which 26.4 GB is available to applications). IBM provides
software that will kill user tasks when they exceed the ConsumableMemory
value, thus protecting the node from failure. A node that fails will
be completely out of service for an indeterminate time and may
lead to system-wide problems.
Nodes fail when an application uses more memory than is physically
available in DRAM and then uncontrollably starts to "page" memory to
disk. On Bassi, only the 12 GB of memory that is configured as 4KB
"small pages" can swap to disk. The remaining 20 GB of "large-page"
(16MB) memory pages are "pinned" and can not swap. (Scientific
applications generally perform significantly better when using
large-page memory, but AIX and the program stack require swappable 4K
memory. The page configuration is set at boot time only and NERSC made
the 20/12 GB split based on benchmark results, consultation with IBM, and
past experience on Bassi.) The current situation - where
ConsumableMemory refers to the aggregate sum of large and small pages -
is not adequately protecting the system because some codes attempt to
allocate large amounts of memory on the stack, causing excessive
small-page memory paging and killing the node while still remaining well
under the total memory limit that would trigger a job kill signal.
In the new configuration, tasks will be killed if they exceed the
ConsumableMemory limit in small-page memory usage only.
ADVANTAGES
* Fewer nodes failures and reboots
* No more artificial per-task large-page memory limitations. (Under the
old configuration a single task was limited to an amount of memory equal
to the ConsumableMemory setting. This did not allow one task to use significantly
more memory than the other tasks on a node.)
DISADVANTAGES
* Existing batch scripts need to be modified to change the value for
ConsumableMemory.
--
Richard Gerber, Ph.D. ragerber@lbl.gov
NERSC phone: 510-486-6820
Lawrence Berkeley National Lab fax: 510-486-4316
Berkeley, CA 94720
_______________________________________________
bassi-users mailing list
bassi-users@nersc.gov
|
| Subject: |
[bassi-users] Please delete unneeded files on Bassi /scratch |
| Author: |
Richard Gerber <ragerber_at_lbl.gov> |
| Date: |
2008-11-05 09:27:29 |
|
Dear Bassi users,
The /scratch file system on Bassi is getting very full. Please remove
any files in your scratch directory
that you no longer need. If the file system gets too full we will have
to start purging older files. We would
much prefer that you delete the files you don't need, so we don't have
to run automatic purge scripts.
Thanks,
Richard Gerber
--
Richard Gerber, Ph.D. ragerber@lbl.gov
NERSC phone: 510-486-6820
Lawrence Berkeley National Lab fax: 510-486-4316
Berkeley, CA 94720
_______________________________________________
bassi-users mailing list
bassi-users@nersc.gov
|
| Subject: |
[bassi-users] WIEN2K 2008.2 and SIESTA 2.0.1 are available on bassi now. |
| Author: |
Zhengji Zhao <zzhao_at_lbl.gov> |
| Date: |
2008-10-20 15:07:04 |
| Dear Bassi users,
WIEN2k 2008.2 and SIESTA 2.0.1 are now available on bassi, and have been
set as the default versions on bassi, respectively. To use, type
module load win2k
and
module load siesta
Regards,
Zhengji Zhao
NERSC User Serivices
_______________________________________________
bassi-users mailing list
bassi-users@nersc.gov
|
| Subject: |
[bassi-users] Bassi downtime Thu., Oct. 16, 10:00-16:00 |
| Author: |
Richard Gerber <ragerber_at_lbl.gov> |
| Date: |
2008-10-09 08:57:25 |
| Dear Bassi Users,
Bassi will be unavailable on Thursday, October 16 from 10:00 to 16:00
Pacific Time.
New hardware will be installed to improve access to the /project file
system.
Regards,
Richard Gerber
--
Richard Gerber, Ph.D. ragerber@lbl.gov
NERSC phone: 510-486-6820
Lawrence Berkeley National Lab fax: 510-486-4316
Berkeley, CA 94720
_______________________________________________
bassi-users mailing list
bassi-users@nersc.gov
|
| Subject: |
[bassi-users] Bassi maintenance postponed, now Tuesday, Sep. 9, 10:00-16:00 Pacific |
| Author: |
Richard Gerber <ragerber_at_lbl.gov> |
| Date: |
2008-09-02 11:25:35 |
|
Dear Bassi users,
Bassi's GPFS software upgrade has been postponed until Tuesday, Sep. 9.
Bassi will be unavailable Tuesday, Sep. 9 from 10:00 to 16:00
Pacific Time. The GPFS parallel file system software will be upgraded.
The outage previously scheduled for Thursday, Sep. 4 has been canceled.
Regards,
Richard Gerber
--
Richard Gerber, Ph.D. ragerber@lbl.gov
NERSC phone: 510-486-6820
Lawrence Berkeley National Lab fax: 510-486-4316
Berkeley, CA 94720
_______________________________________________
bassi-users mailing list
bassi-users@nersc.gov
|
| Subject: |
[bassi-users] Bassi maintenance Thursday, Sep. 4, 10:00-16:00 Pacific |
| Author: |
Richard Gerber <ragerber_at_lbl.gov> |
| Date: |
2008-09-02 09:43:29 |
|
Dear Bassi users,
Bassi will be unavailable Thursday, Sep. 4 from 10:00 to 16:00
Pacific Time. The GPFS parallel file system software will be upgraded.
Regards,
Richard Gerber
--
Richard Gerber, Ph.D. ragerber@lbl.gov
NERSC phone: 510-486-6820
Lawrence Berkeley National Lab fax: 510-486-4316
Berkeley, CA 94720
_______________________________________________
bassi-users mailing list
bassi-users@nersc.gov
|
| Subject: |
[bassi-users] Bassi maintenance Thursday, August 14, 10:00-16:00 Pacific |
| Author: |
Richard Gerber <ragerber_at_lbl.gov> |
| Date: |
2008-08-07 16:10:37 |
| Dear Bassi users,
Bassi will be unavailable next Thursday, August 14 from 10:00 to 16:00
Pacific Time. The system will be upgraded to AIX 5.3 TL8.
Regards,
Richard Gerber
--
Richard Gerber, Ph.D. ragerber@lbl.gov
NERSC phone: 510-486-6820
Lawrence Berkeley National Lab fax: 510-486-4316
Berkeley, CA 94720
_______________________________________________
bassi-users mailing list
bassi-users@nersc.gov
|
| Subject: |
NERSC Bassi: Please remove old files in /scratch |
| Author: |
Richard Gerber <ragerber_at_lbl.gov> |
| Date: |
2008-07-10 09:55:18 |
| Dear Bassi users,
Please delete or archive to HPSS files you no longer actively need in
the /scratch file system. If the file system gets too full we will have
to delete older files in some automated way. We prefer that you delete
the files you know you no longer need so a purge will not be necessary.
Thank you,
Richard Gerber
--
Richard Gerber, Ph.D. ragerber@lbl.gov
NERSC phone: 510-486-6820
Lawrence Berkeley National Lab fax: 510-486-4316
Berkeley, CA 94720
|
| Subject: |
Bassi maintenance Thu., May 29, 10:00-15:00 PDT |
| Author: |
Richard Gerber <ragerber_at_lbl.gov> |
| Date: |
2008-05-27 16:11:31 |
| Dear Bassi users,
Bassi will be unavailable on Thursday, May 29 from 10:00-15:00 Pacific
Time. The LoadLeveler batch system software will be upgraded during this
maintenance.
Regards,
Richard Gerber
--
Richard Gerber, Ph.D. ragerber@lbl.gov
NERSC phone: 510-486-6820
Lawrence Berkeley National Lab fax: 510-486-4316
Berkeley, CA 94720
|
| Subject: |
Bassi: Default IBM XL Fortran compiler is now 11.1.0.1 |
| Author: |
Richard Gerber <ragerber_at_lbl.gov> |
| Date: |
2008-05-05 16:50:51 |
| Dear Bassi users:
The default IBM XL Fortran compiler was updated to version 11.1.0.1
today, Monday, May 5, 2008.
Please report any problems to the NERSC consultants (consult@nersc.gov).
Regards,
Richard Gerber
--
Richard Gerber, Ph.D. ragerber@lbl.gov
NERSC phone: 510-486-6820
Lawrence Berkeley National Lab fax: 510-486-4316
Berkeley, CA 94720
|
| Subject: |
Bassi XLF Fortran compiler upgrade on Monday, May 5 |
| Author: |
Richard Gerber <ragerber_at_lbl.gov> |
| Date: |
2008-04-28 14:11:12 |
| Dear Bassi users,
The default XLF compiler on Bassi will be upgraded from version 10.1.0.5
to 11.1.0.1 on Monday, May 5.
Version 11.1.0.1 contains bug fixes and has shown significant
performance improvement for a number of codes.
Richard Gerber
|
| Subject: |
bassi special queue : electron impact ionisation of Carbon + |
| Author: |
Connor Ballance <ballance_at_vanadium.rollins.edu> |
| Date: |
2008-04-09 06:23:04 |
|
| Subject: |
Bassi compiler upgrades on Wed., Jan. 23 |
| Author: |
Richard Gerber <ragerber_at_lbl.gov> |
| Date: |
2008-01-16 12:30:00 |
| Dear Bassi users,
The IBM C and Fortran compilers will be updated on Wednesday, Jan. 23
between 08:00 and 10:00 PST.
We recommend that you refrain from using the compilers during that time.
Changes to the default compiler versions:
XL C 7.0.0.2 will updated to XL C 8.0.0.16
XL FORTRAN 9.1.0.8 will be updated to XL FORTRAN 10.1.0.5
Regards,
Richard Gerber
--
Richard Gerber, Ph.D. ragerber@lbl.gov
NERSC phone: 510-486-6820
Lawrence Berkeley National Lab fax: 510-486-4316
Berkeley, CA 94720
|
| Subject: |
Please delete unneeded files on Bassi /scratch |
| Author: |
Richard Gerber <ragerber_at_lbl.gov> |
| Date: |
2008-01-11 14:27:14 |
| Dear Bassi users,
The /scratch file system on Bassi is getting very full. Please remove
any files in your scratch directory
that you no longer need. If the file system gets too full we will have
to start purging older files. We would
much prefer that you delete the files you don't need, so we don't have
to run automatic purge scripts.
Thanks,
Richard Gerber
--
Richard Gerber, Ph.D. ragerber@lbl.gov
NERSC phone: 510-486-6820
Lawrence Berkeley National Lab fax: 510-486-4316
Berkeley, CA 94720
|
| Subject: |
NERSC Bassi update |
| Author: |
Richard Gerber <ragerber_at_lbl.gov> |
| Date: |
2007-12-21 11:45:38 |
| Dear Bassi users,
Holiday Greetings! We hope Bassi continues to be a productive machine
for you. The system was
recently in uninterrupted service for more than three months before last
week's brief system reboot.
We recycled the machine on Dec. 13 to clear "stuck" memory segments on
many of the nodes.
Some memory on the affected nodes was unavailable to your applications.
While most codes were
probably unaffected, those with extreme memory bandwidth requirements,
or those trying to use
all available memory, may have had problems. All nodes are back to
normal and we are
working with IBM to keep this from happening again.
This issue was identified by NERSC's performance monitoring efforts, the
results of which are
available online at
https://www.nersc.gov/nusers/systems/bassi/monitor.php. Examine the
"memrate"
results to see how an extremely memory intensive routine was affected by
the recent problems.
We have been saving memory "snaphots" of each node every 15 minutes and
this data
for each job is available from the NERSC completed jobs page at
https://www.nersc.gov/nusers/status/jobs/index.php
If your job ran for 30 minutes or more you can click on the Job ID
(Bassi jobs only) and get a look at
how your job used memory on each node (not each MPI task) as a function
of time. If you ran using the
NERSC IPM performance utility, the memory snapshots will appear on the
same page with your IPM results.
We hope these web pages automatically provide you with valuable
information about your run with little to no
effort on your part. If you are unfamiliar with IPM, please see
http://www.nersc.gov/nusers/resources/software/tools/ipm.php
Finally, if you are moving from Seaborg to Bassi, please review the
Quick Start Guide for Seaborg Users at
http://www.nersc.gov/nusers/systems/bassi/quick.php
Regards,
Richard Gerber
--
Richard Gerber, Ph.D. ragerber@lbl.gov
NERSC phone: 510-486-6820
Lawrence Berkeley National Lab fax: 510-486-4316
Berkeley, CA 94720
|
| Subject: |
Bassi downtime on Thursday, Dec. 13 |
| Author: |
Richard Gerber <ragerber_at_lbl.gov> |
| Date: |
2007-12-11 15:05:41 |
| Dear Bassi users,
Bassi will be rebooted on Thursday, Dec. 13 at 13:00 PST. The total down
time is expected to
be less than two hours. The reboot will clear locked memory segments on
the compute nodes..
Jobs that would finish after 13:00 on Dec. 13 (based on the value for
wall_clock_limit in the submitted script)
will not be eligible to start until Bassi is returned to service. Jobs
that can "backfill," i.e. finish before
the scheduled reboot, will be eligible to run before the outage.
Regards,
Richard Gerber
--
Richard Gerber, Ph.D. ragerber@lbl.gov
NERSC phone: 510-486-6820
Lawrence Berkeley National Lab fax: 510-486-4316
Berkeley, CA 94720
|
| Subject: |
Quantum espresso 3.2 (PWscf) is available on bassi now |
| Author: |
Zhengji Zhao <zzhao_at_lbl.gov> |
| Date: |
2007-12-04 16:31:01 |
| Dear Bassi users,
Quantum espresso version 3.2 is now available on bassi. To use it, type:
module load espresso/3.2
This is default version on bassi.
Regards,
Zhengji Zhao
NERSC User Services
|
| Subject: |
G03 version E1 is available on bassi now |
| Author: |
Zhengji Zhao <zzhao_at_lbl.gov> |
| Date: |
2007-12-04 16:23:27 |
| Dear Bassi users,
G03 version E1 is now available on bassi. To use it, type:
module load g03/e1
If no problems are reported, this version will become the default version
in one month (Jan 4). The current default version is d2.
Regards,
Zhengji Zhao
NERSC User Services
|
| Subject: |
Bassi Scheduled Maintenance 8/22/2007 10:00 - 17:00 PT |
| Author: |
Katie Antypas <kantypas_at_lbl.gov> |
| Date: |
2007-08-17 10:08:12 |
| Dear Bassi Users,
Bassi will be down on Wednesday August 22th from 10:00 - 17:00 Pacific
Time for scheduled maintenance.
Please see the Message of the Day for updates on system status.
http://www.nersc.gov/nusers/status/motd.php
Regards,
Katie Antypas
NERSC User Services Group
|
| Subject: |
Bassi Back in Production |
| Author: |
Katie Antypas <kantypas_at_lbl.gov> |
| Date: |
2007-08-08 14:09:21 |
| Dear Bassi Users,
Bassi has returned to production. Please report any problems to
consult@nersc.gov
Regards,
Katie Antypas
NERSC User Services Group
|
| Subject: |
Bassi emergency maintenance 07/08/2007 10:30am PT |
| Author: |
Katie Antypas <kantypas_at_lbl.gov> |
| Date: |
2007-08-08 10:29:06 |
| Dear Bassi Users,
We are experiencing file system problems out of /scratch and the system
needs to be taken down in order to do a file system check. Running jobs
will be canceled and logins will be unavailable. We do not know
precisely when the system will return to production, however we expect
Bassi to be down for most or all of the remainder of the day.
Please see the Message of the Day for more updates.
http://www.nersc.gov/nusers/status/motd.php
We apologize for the inconvenience.
Regards,
Katie Antypas
NERSC User Services Group
|
| Subject: |
The current version of GAMESS (March 2007) is available on Bassi now |
| Author: |
Zhengji Zhao <zzhao_at_lbl.gov> |
| Date: |
2007-08-03 12:29:15 |
| Dear Bassi users,
The current version of GAMESS (March 2007) is now available on Bassi.
To use it, type:
module load gamess/2007.03
If no problems are reported, this version will become the default version
in one month (Sept. 3). The current default version is gamess/2004.11.
--
Best regards,
Zhengji Zhao
User Services Group email: ZZhao@lbl.gov
NERSC Division phone: (510) 495-2540
Lawrence Berkeley Lab fax: (510) 486-4316
|
| Subject: |
wien2k (Feb 2007) is available on Bassi and Seborg |
| Author: |
Zhengji Zhao <zzhao_at_lbl.gov> |
| Date: |
2007-08-03 12:19:08 |
| Dear Bassi and Seaborg users,
The current version of WIEN 2k is available on Bassi and Seaborg. To use
it, type:
module load wien2k/2007.2
If no problems are reported, this version will become the default
version on Seaborg
in one month (Sept. 3). The current default version is R011803.
On Bassi, this is the default version now.
--
Best regards,
Zhengji Zhao
User Services Group email: ZZhao@lbl.gov
NERSC Division phone: (510) 495-2540
Lawrence Berkeley Lab fax: (510) 486-4316
|
| Subject: |
Q-Chem 3.1 is available on Bassi, Jacquard, and Seaborg |
| Author: |
Zhengji Zhao <zzhao_at_lbl.gov> |
| Date: |
2007-08-03 12:05:24 |
| Dear NERSC users,
Q-Chem 3.1 is now available on Bassi, Jacquard, and Seaborg now. To use
it, type:
module load qchem/3.1
If no problems are reported, this version will become the default version
in one month (Sept. 3). The current default version is 3.0.
On Jacquard, we have also installed serial version of Q-Chem 3.1. To
use it, type:
module load qchem/3.1s
--
Best regards,
Zhengji Zhao
User Services Group email: ZZhao@lbl.gov
NERSC Division phone: (510) 495-2540
Lawrence Berkeley Lab fax: (510) 486-4316
|
| Subject: |
New version of NCO available on Bassi |
| Author: |
Helen He <yhe_at_lbl.gov> |
| Date: |
2007-07-31 11:04:49 |
| Greetings Bassi User,
A new version of the NetCDF Operator (NCO) has been installed on Bassi.
To access it, type:
module load nco/3.9.1
If no problems are reported, this will become the default version in one
week (Tuesday, Aug 7). The current default version (3.0.2) will remain
available for a short time after that.
Best regards,
Helen He
NERSC User Services
|
| Subject: |
Reminder of Bassi queue policies |
| Author: |
Richard Gerber <ragerber_at_lbl.gov> |
| Date: |
2007-04-30 11:18:29 |
|
Dear Bassi Users,
The Bassi queues are becoming crowded, so we'd like to review the NERSC
queue policies.
For the production batch classes (regular, premium, and low), the system
enforces the following maximum limits:
* 3 running jobs per user account
* 4 queued (I state) jobs per user account
* 2 combined interactive and debug jobs either queued or running per
user account
NERSC manually enforces the following policies:
* Jobs on User Hold are deleted 7 days following submission
* Accounts may be suspended for chaining in the interactive or debug class
Chaining is defined as using a batch script to submit another batch script.
Since jobs on User Hold age in the queue, their release may
perturb the scheduler such that overall system throughput is degraded.
In such circumstances NERSC may change the state of User Hold jobs to System
Hold, and release them only when overall system throughput will not
be affected.
Please see the following web page for more information:
http://www.nersc.gov/nusers/systems/bassi/running_jobs/classes.php#policy
Sincerely,
Richard Gerber
--
Richard Gerber, Ph.D. ragerber@lbl.gov
NERSC phone: 510-486-6820
Lawrence Berkeley National Lab fax: 510-486-4316
Berkeley, CA 94720
|
| Subject: |
NWChem 5.0 is the default version on Bassi |
| Author: |
Zhengji Zhao <zzhao_at_lbl.gov> |
| Date: |
2007-04-27 11:55:04 |
| Dear Bassi users,
NWchem 5.0 is the default version on Bassi now. To use it, type:
module load nwchem.
The previous default version (4.7) will
remain available via "module load nwchem/4.7".
--
Best regards,
Zhengji Zhao
User Services Group email: ZZhao@lbl.gov
NERSC Division phone: (510) 495-2540
Lawrence Berkeley Lab fax: (510) 486-4316
|
| Subject: |
Bassi checkpoint/restart enabled by default |
| Author: |
Richard Gerber <ragerber_at_lbl.gov> |
| Date: |
2007-04-13 12:35:25 |
| Dear Bassi users,
On Thursday, April 12 checkpoint/restart was enabled by default
for all batch jobs submitted on Bassi. Most jobs will be unaffected
by this change; however, there are some imposed limitations, which
are discussed at
https://www.nersc.gov/nusers/systems/bassi/running_jobs/checkpoint.php
Please report any problems to the NERSC consultants (consult@nersc.gov).
Thank you,
Richard Gerber
--
Richard Gerber, Ph.D. ragerber@lbl.gov
National Energy Research
Scientific Computing Center phone: 510-486-6820
Lawrence Berkeley National Lab fax: 510-486-4316
Berkeley, CA 94720
|
| Subject: |
Fortran and C compilers on Bassi |
| Author: |
Richard Gerber <ragerber_at_lbl.gov> |
| Date: |
2007-03-29 08:37:48 |
| Dear Bassi users,
The IBM Fortran and C/C++ default compilers will be upgraded on April
16, 2007.
Fortran version change
9.1.0.6 to 9.1.0.8
C/C++ version change
7.0.0.2 to 8.0.0.0
You may test the new compilers by loading the appropriate module:
xlf/new
or
xlc/new
An additional version of XLF is available:
xlf/10.1.0.3
To use the "Non-Default Installation" version of the compilers, you must load the module
both before you compile and before you run the resulting executable. For example, to test
the new C compiler:
module load xlc/new
Please report any problems with the updated compilers to consult@nersc.gov.
--
Richard Gerber, Ph.D. ragerber@lbl.gov
National Energy Research
Scientific Computing Center phone: 510-486-6820
Lawrence Berkeley National Lab fax: 510-486-4316
Berkeley, CA 94720
|
| Subject: |
NWChem 5.0 is now available on Bassi |
| Author: |
Zhengji Zhao <zzhao_at_lbl.gov> |
| Date: |
2007-03-19 13:56:08 |
| Dear Bassi users,
A new version (5.0) of NWchem is available on Bassi now. To use it, type:
module load nwchem/5.0
You need to link the .nwchemrc file in your home directory to
the $NWCHEM_DIR/default.nwchemrc when you first start to use this
version, type:
ln -sf $NWCHEM_DIR/default.nwchemrc ~/.nwchemrc or
cp ${NWCHEM_DIR}/default.nwchemrc ~/.nwchemrc
If no problems are reported, this version will become the default version
in one month (on April 19). The current default version (4.7) will
remain available via "module load nwchem/4.7".
--
Best regards,
Zhengji zhao
User Services Group email: ZZhao@lbl.gov
NERSC Division phone: (510) 495-2540
Lawrence Berkeley Lab fax: (510) 486-4316
|
| Subject: |
Bassi regular class run limits increased |
| Author: |
Richard Gerber <ragerber_at_lbl.gov> |
| Date: |
2007-03-05 12:16:11 |
| Dear Bassi users,
The wallclock run limits for the regular classes on Bassi have been
increased. The new
limits are:
Jobs using 1-15 nodes (reg_1): 36 hours
Jobs using 16-48 nodes (reg_16, reg_32): 18 hours
The old limits were 24 and 12 hours, respectively.
--
Richard Gerber, Ph.D. ragerber@lbl.gov
National Energy Research Computing Ctr. phone: 510-486-6820
User Services Group fax: 510-486-4316
Lawrence Berkeley National Lab
Berkeley, CA 94720
|
| Subject: |
Bassi firmware upgrade completed; 128 MB/node less memory available |
| Author: |
Richard Gerber <ragerber_at_lbl.gov> |
| Date: |
2007-03-01 11:43:48 |
| Dear Bassi users,
Bassi is available and running jobs following Wednesday's firmware
upgrade. The new firmware
uses 128 MB more memory per node. This means that each node has 128 MB
less memory
available for running your code.
The ConsumableMemory resource has been adjusted accordingly. If your
LoadLeveler script
explicitly sets a value for ConsumableMemory, please note the following
change:
Total node ConsumableMemory: 27032 MB (26.4 GB)
The value you should specify in your LoadLeveler script is
27032/task_per_node.
The default value is now 27032 MB/8 = 3379 MB. If you run with 8
tasks_per_node
you do not need to explicitly specify ConsumableMemory in your script.
Jobs that were queued before Wednesday did not run immediately after the
upgrade because
they had the wrong default value for ConsumableMemory. We are inserting
the correct value for all
queued jobs; you do not need to take any action to make them run.
Please see the following URL for more on the topic:
https://www.nersc.gov/nusers/resources/bassi/running_jobs/memory.php
Regards,
Richard Gerber
|
| Subject: |
Bassi: Scheduled Maintenance Wednesday, Feb. 28 |
| Author: |
Richard Gerber <ragerber_at_lbl.gov> |
| Date: |
2007-02-20 16:11:07 |
| Dear Bassi users,
Bassi is scheduled to be unavailable on Wednesday, February 28 from
09:00 to 23:59 Pacific Time for a firmware upgrade.
|
| Subject: |
Bassi debug and interactive jobs |
| Author: |
Richard Gerber <ragerber_at_lbl.gov> |
| Date: |
2007-01-18 12:54:40 |
| Dear Bassi users,
Beginning today four Bassi nodes are reserved for debug and interactive
jobs from 05:00 PST until 18:00 PST on weekdays. What this means: only
interactive and debug jobs will start on these nodes from 5 a.m. to 6
p.m. Any jobs that were already running on the four nodes at 5 a.m. will
continue until they finish normally.
Regards,
Richard Gerber
|
| Subject: |
Bassi: Scheduled Maintenance on Thursday, Dec. 7 |
| Author: |
Richard Gerber <ragerber_at_lbl.gov> |
| Date: |
2006-11-29 10:18:17 |
| Dear Bassi users,
Bassi will down Thursday, December 7, 14:00 - 20:00 PST for GPFS
software maintenance.
Regards,
Richard Gerber
|
| Subject: |
Reminder: Bassi downtime Wednesday. And: Memory usage on Bassi |
| Author: |
Richard Gerber <ragerber_at_lbl.gov> |
| Date: |
2006-08-01 12:49:27 |
| Dear NERSC users,
A reminder: Bassi will be down for scheduled maintenance Wednesday,
August 2 from 14:00-23:59 Pacific Time. We will updating the Parallel
Environment, Loadleveler batch scheduler, and GPFS file system software.
Memory Usage on Bassi
Some users have been experiencing problems with memory exhaustion on Bassi.
To help you plan and monitor your memory usage we've updated these web
pages:
* Running jobs on Bassi
(https://www.nersc.gov/nusers/resources/bassi/running_jobs/) has an
updated explanation of how much memory is available to your application
on each Bassi node,
* Running on Bassi: Interactive jobs
(https://www.nersc.gov/nusers/resources/bassi/running_jobs/interactive.php)
has new information on running serial utilities on the login nodes.
* Bassi completed jobs list
(https://www.nersc.gov/nusers/status/jobs/bassi/) now displays the
maximum memory used by a single task for a given job. (Check "Memory"
under "Select Columns to Display" and click on "Update Display")
Richard Gerber
|
| Subject: |
Bassi emergency maintenance extended |
| Author: |
Richard Gerber <ragerber_at_lbl.gov> |
| Date: |
2006-07-14 08:43:25 |
| Dear NERSC users,
Bassi is still undergoing emergency maintenance to resolve HPS network
problems.
There is no estimated uptime.
Richard Gerber
|
| Subject: |
Bassi: Emergency System Maintenance |
| Author: |
Richard Gerber <ragerber_at_lbl.gov> |
| Date: |
2006-07-12 16:50:20 |
| Dear NERSC Users,
Bassi will be unavailable beginning at 08:00 PDT on Thursday, July 13.
Dedicated time will be
taken to debug and correct a problem with the HPS network. Bassi is
currently experiencing
degraded point-to-point network bandwidth across the entire system. The
outage is scheduled for
12 hours, but the system may be returned to service sooner if the
problem is fixed.
Richard Gerber
|
| Subject: |
NERSC presents a day of training highlighting Bassi |
| Author: |
Richard Gerber <ragerber_at_lbl.gov> |
| Date: |
2006-06-05 16:20:55 |
| Dear NERSC Users,
NERSC will offer a series of presentations highlighting Bassi, the IBM
POWER 5 p575 system on Tuesday, June 13, 2006 . Online participation is
available via a web conference, RealVideo streaming, and a
teleconference. A web conference consists of a telephone conference, a
web-based tool that controls slide display, and a text-based chat window.
Please register by Wednesday, June 7 to reserve a spot. We must make
advance arrangements to accommodate more than 20 remote attendees. NERSC
is charged per connection, so we ask that remote participants from a
single site gather in one location and use only a single connection if
possible.
Please register at the following URL (The sessions are being held in
conjunction with the NERSC Users' Group Meeting at Princeton Plasma
Physics Laboratory):
https://www.nersc.gov/about/NUG/meeting_info/June06/reg_form.php
To register for the training day only, chose "Days: Tue., June 13
(Training)" and "I will attend: Remotely: "
The agenda is available at the URL:
https://www.nersc.gov/about/NUG/meeting_info/June06/
*Scheduled Presentations
*
09:00 EDT (06:00 PDT) - Bassi Overview and Status: a high-level
description of the system, its configuration, processors, interconnect,
file systems, and software.
09:45 EDT (06:45 PDT) - POWER5 processor and Bassi node overview: POWER
5 basics, differences from POWER 3, node configuration, memory layout,
processor and memory affinity.
10:45 EDT (07:45 PDT) - The High Speed Interconnect and Switch: getting
the most out of HPS - network characteristics (MPI & LAPI latency,
bandwidth), runtime performance settings, network topology, differences
from Seaborg.
11:30 EDT (08:30 PDT) - Compiling for Performance on Bassi: AIX Fortran,
C, C++; recommended compiler options, useful compiler options,
libraries, porting from Seaborg and Linux clusters.
13:30 EDT (10:30 PDT) - Benchmark Performance on Bassi: performance is
compared to Seaborg, Jacquard, and a variety of other HPC platforms.
14:15 EDT (11:15 PDT) - Experiences Configuring, Debugging, Validating
and Running on Bassi.
15:15 EDT (12:15 PDT) - High Level File Storage and Parallel I/O for
Fusion Applications using ParallelHDF5.
(Individual presentations may be repeated at another time and date if
there is demand. You may reply to this
e-mail to request a repeat; please indicate your preferences for times
and days of the week.)
The technical details (e.g., how to connect) will be sent by e-mail to
those who register for remote participation.
Thank you,
Richard Gerber
|
| Subject: |
Bassi status and Wednesday scheduled maintenance |
| Author: |
Richard Gerber <ragerber_at_lbl.gov> |
| Date: |
2006-06-05 11:27:40 |
| Dear NERSC users,
Reminder: Bassi Scheduled Maintenance Wednesday 6/07/2006 15:00-23:59PT
_Bassi Status_
Bassi is up and running jobs, however we are experiencing (seemingly) random
job launch failures. The jobs appear to start, but are immediately
canceled by a
so far mysterious system failure. Subsequent attempts to run the job usually
succeed. NERSC and IBM are working to diagnose and remedy the problem.
Richard Gerber
|
| Subject: |
Bassi: NAG Mark 21 64-bit installed |
| Author: |
Harsh Anand <hanand_at_lbl.gov> |
| Date: |
2006-05-25 10:04:51 |
| Dear NERSC users,
NAG Mark 21 64-bit library has been installed on Bassi.
To access this library, first load the module "nag_64/21".
%module load nag_64/21
For Mark 21 News see:
http://www.nag.com/numeric/fl/manual/html/genint/fl_news.html
For NERSC implementation-specific information please see Users'
Notes:
http://www.nersc.gov/nusers/resources/software/libs/math/nag/nag21_64bit_un.html
For further information see:
http://www.nersc.gov/nusers/resources/software/libs/math/nag/
NAG Mark 21 64-bit, will become the default on June 1, 2006. The
current version, Mark 20 64-bit, will be disabled on June 8, 2006
and deleted soon thereafter.
Regards,
Harsh Anand email: hanand_at_lbl_dot_gov
NERSC User Services phone: (510) 486-5575
|
| Subject: |
Bassi status, IPM is available, Performance toolkit installed |
| Author: |
Richard Gerber <ragerber_at_lbl.gov> |
| Date: |
2006-05-24 14:21:05 |
|
Dear NERSC Users,
Bassi is up and running AIX 5.3 with the NERSC benchmark codes
achieving performance
very similar to that measured under AIX 5.2. Over the last few days,
node b0408 was found
to have degraded memory bandwidth and removed from the system, and GPFS
was tuned to restore
pre-migration performance in /scratch.
* IPM PERFORMANCE UTILITY
The NERSC IPM performance utility is available again on Bassi. IPM was
recompiled under AIX
5.3 to fix hangs in MPI_init reported by some users.
* IBM HIGH PERFORMANCE COMPUTING TOOLKIT (IHPCT)
The IBM High Performance Computing Toolkit has been installed on Bassi
in the "ihpct" module. The software is installed "as-is" as provided by
IBM.
Please report problems with the software to consult@nersc.gov.
From the README file:
-------------------------------------------------------------------------
The IBM High Performance Computing Toolkit is a collection of tools
and libraries which make it easy to collect performance
data from a program. It provides libraries to to gather
data from programs parallelized with OpenMP, SHMEM and
MPI. It allows you to collect data from the hardware
performance counters too. With SiGMA a tool is provided
which is able to show the utilisation of the memory with
a very fine granularity. The PeekPerf GUI is able to show
the collected data within one window.
-----------------------------------------------------------------------
After loading the module, you can use "hpmcount -l" and "hpmcount -c" to
see all the POWER5
counters, events, and groups.
See the following website for more information:
http://www.research.ibm.com/actc/
Regards,
Richard Gerber
|
| Subject: |
Please don't use IPM on Bassi |
| Author: |
Richard Gerber <ragerber_at_lbl.gov> |
| Date: |
2006-05-17 10:29:59 |
| Dear NERSC users,
The NERSC performance tool IPM is not functioning correctly on Bassi.
Please do not use IPM on Bassi until we are able to resolve the problem.
Thank you,
Richard Gerber
|
| Subject: |
Bassi status |
| Author: |
Richard Gerber <ragerber_at_lbl.gov> |
| Date: |
2006-05-15 16:00:51 |
| Dear NERSC Users,
Bassi is currently up and running AIX 5.3. NERSC is addressing some
minor issues
resulting from the recent OS migration and they are expected to be
resolved soon.
There are a few items you should be aware of:
* The compute nodes now have 24 GB of memory devoted to large pages. If
you see
unexpected changes in your code's performance, please make sure it
is large-page
enabled. Use "checklp a.out" to check if an executable named "a.out"
is large-page
enabled. If it is not, relink with the "-blpdata" flag or use
"ldedit -blpdata a.out" to
enable a.out to use large pages. There is very little memory
available (only a few GB
per node) for applications that use only small-page memory.
* A bug has been identified that can cause hangs or very slow startup of
parallel programs
that read from Standard Input (STDIN). If your program reads from
STDIN, but only
needs that information in a single MPI task, set the environment
variable
MP_STDINMODE to the value of that task number. For example, if STDIN
only needs to be
read from task 0 (zero), before you execute your code set
MP_STDINMODE to have
the value 0 (zero).
* LAPI one-sided functions may not be supported using RDMA in the
current version
of LoadLeveler.
* SMT is available on the POWER 5 under AIX 5.3, but it is not currently
enabled. NERSC
will evaluating SMT on Bassi in the coming weeks.
Thank you to those have reported problems. Please report any problems to
consult@nersc.gov.
Richard Gerber
|
| Subject: |
Bassi downtime Wednesday, May 10, 15:00 PDT |
| Author: |
Richard Gerber <ragerber_at_lbl.gov> |
| Date: |
2006-05-08 12:12:18 |
| Dear NERSC Users,
Bassi is scheduled to be unavailable from Wednesday, May 10 at 15:00 PDT until
Thursday, May 11 at 08:00 PDT. A system migration from AIX 5.2 to AIX 5.3 is planned.
Richard Gerber
|
| Subject: |
Bassi will be unavailable Wednesday April 26, 15:00-23:59 |
| Author: |
Richard Gerber <ragerber_at_lbl.gov> |
| Date: |
2006-04-20 09:45:00 |
| Dear NERSC Users,
Bassi is scheduled to be unavailable for running jobs Wednesday, April 26
from 15:00 until 23:59 PDT. IBM and NERSC will be performing AIX 5.3 testing
during that time.
Also on Bassi: NERSC's IPM performance tool currently prints incorrect derived FLOP
counts and rates. The corrected values for all jobs that used IPM are available on the NERSC
web site: https://www.nersc.gov/nusers/status/jobs/bassi/ (Click on the StepID link in
the list of jobs to access IPM results). An updated version of IPM will be available on
Bassi soon.
Richard Gerber
|
| Subject: |
Bassi downtime Wednesday, April 12 |
| Author: |
David Turner <dpturner_at_lbl.gov> |
| Date: |
2006-04-05 12:11:08 |
| Greetings NERSC User,
Bassi will be unavailable on Wednesday, April 12, from 15:00 until
23:59 PDT. We will be investigating performance differences between
AIX 5.2 and AIX 5.3.
--
Best regards,
David Turner
User Services Group email: dpturner@lbl.gov
NERSC Division phone: (510) 486-4027
Lawrence Berkeley Lab fax: (510) 486-4316
|
| Subject: |
Bassi downtime Wednesday, March 29 |
| Author: |
Richard Gerber <ragerber_at_lbl.gov> |
| Date: |
2006-03-23 15:36:37 |
| Dear NERSC Users:
A downtime on Wednesday, March 29 has been scheduled for Bassi from
15:00 to 23:59 PST. We will be performing tests in preparation for
the planned migration to AIX 5.3.
Richard Gerber
|
| Subject: |
New software and increased run time limit on Bassi |
| Author: |
Richard Gerber <ragerber_at_lbl.gov> |
| Date: |
2006-03-23 14:04:58 |
| Dear NERSC users,
We are continuously adding and updating software on Bassi. New packages include:
Gaussian 03
FFTW 3.1
Molpro 2002.6
TAU 2.15.2
AZTEC 2.1
SuperLU_dist 2.0_64
IDL 6.2
Global Arrays 3.4b (experimental version)
All third-part software is available through modules (http://www.nersc.gov/nusers/resources/software/os/modules.php).
The wallclock limit for jobs using 15 or fewer nodes has been increased
from 12 to 24 hours.
Richard Gerber
|
| Subject: |
Bassi downtime Wednesday 10:00-15:00 PST |
| Author: |
Richard Gerber <ragerber_at_lbl.gov> |
| Date: |
2006-02-28 15:18:59 |
| Dear NERSC Users,
Bassi will have a downtime Wednesday, March 1 from 10:00 to 15:00 PST.
Queued jobs that request a completion time after 10:00 PST on March 1, will not start
until after maintenance is complete. The machine will be returned to service
as soon as possible, so please watch the NERSC MOTD - available
from the NERSC website - for updates.
Richard Gerber
|
| Subject: |
Grace on Seaborg and Bassi |
| Author: |
David Turner <dpturner_at_lbl.gov> |
| Date: |
2006-02-21 13:56:59 |
| Greetings NERSC User,
Grace, a two-dimensional interactive graphics application, is now available
on Bassi. On Bassi, the only version available is 5.1.19; on Seaborg, version
5.1.12 is the default, but version 5.1.19 will become the default in one week
(Tuesday, February 28). To use Grace on either machine, do the following:
% module load grace
% xmgrace
For detailed instructions on using Grace, please see:
http://vis.lbl.gov/NERSC/Software/grace/
--
Best regards,
David Turner
User Services Group email: dpturner@lbl.gov
NERSC Division phone: (510) 486-4027
Lawrence Berkeley Lab fax: (510) 486-4316
|
| Subject: |
Bassi downtime scheduled Thursday, Feb. 23 06:00 PST |
| Author: |
Richard Gerber <ragerber_at_lbl.gov> |
| Date: |
2006-02-16 16:31:36 |
| Dear NERSC Users,
Bassi is scheduled to be down for software maintenance Thursday, February 23, 2006
beginning at 06:00 PST. Estimated uptime is 23:59 on February 23.
AIX will be migrated from version 5.2 to version 5.3.
Richard Gerber
|
| Subject: |
Bassi charging to start Jan 9 |
| Author: |
Francesca Verdier <fverdier_at_lbl.gov> |
| Date: |
2006-01-04 11:26:52 |
| Dear NERSC MPP users,
Charging for NERSC's new IBM POWER 5 system, Bassi, will start this
coming Monday, January 9. Based on benchmark and NERSC user application
timings, the machine charge factor on Bassi is six. See:
http://www.nersc.gov/nusers/resources/bassi/accounts.php
Additional allocation for Bassi resources have been given to DOE, and
will be distributed within the next month or so. If your repo balance
is low, please have one of your project managers contact their DOE
program manager. For contacts:
http://www.nersc.gov/nusers/accounts/allocations//off-prog-mon.php
Sincerely,
--
Francesca Verdier email: fverdier@lbl.gov
Associate Manager, NERSC Services phone: 510-486-7193
|
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