Poisson Rouge . Red Fish Soup . Games for Children . Jeux pour Enfants:
This site is the best
Sunday, May 30, 2010
Wednesday, May 26, 2010
VoltDB « Mass High Tech Blog
VoltDB « Mass High Tech Blog
A FOSS in memory RDBMs aimed at fast OLTP and Oracle times ten I guess
Now there is an alternative that ppl and write apps around easily bcos its open!
In telco space (class 4 or 5 switching (Cisco BTS, Open Call agent, broadsoft.... and call routing) really quick DBs for routing are very important, in fact many have files in ram b'cos all RDBMS's were too slow
The SQL is like a 'RISC' SQL
A FOSS in memory RDBMs aimed at fast OLTP and Oracle times ten I guess
Now there is an alternative that ppl and write apps around easily bcos its open!
In telco space (class 4 or 5 switching (Cisco BTS, Open Call agent, broadsoft.... and call routing) really quick DBs for routing are very important, in fact many have files in ram b'cos all RDBMS's were too slow
The SQL is like a 'RISC' SQL
Saturday, May 15, 2010
this oil spill is getting scary
http://www.thedailygreen.com/environmental-news/latest/gulf-oil-spill-photos-video-50051410
lots of links - very worrying - what state are we leaving the planet in to our children and the other living things here
Im sure BP are playing the size of this down
lots of links - very worrying - what state are we leaving the planet in to our children and the other living things here
Im sure BP are playing the size of this down
How Shazam Works
I got that shazam on my iphone and started right away with the most obscure songs I could think of, It gets the old flyingnun kiwi 80's stuff but it did not get Dr Demento Kinko the clown.
What I needed to know is HOW it matches so fast,one bit of a song across so many - its all here, the algorithm uses a spectral frequency fingerprint hash
"Big O 1" [constant time O(1)] which is why its so fast!
How Shazam Works
What I needed to know is HOW it matches so fast,one bit of a song across so many - its all here, the algorithm uses a spectral frequency fingerprint hash
"Big O 1" [constant time O(1)] which is why its so fast!
How Shazam Works
Friday, May 14, 2010
why criminals love big pHaT BanK NoTES!!
BBC News - 500 euro note - why criminals love it so
Was it a deliberate ploy by the eurozone chiefs to make a bank note that criminals would surely use to help support the currency in the beginning?
And now that the currency is established - get rid of the big notes!!!
'Give me control of a nations money supply, and I care not who makes it’s laws.'
-M A Rothschild, founder of the Rothschild banking dynasty.
Was it a deliberate ploy by the eurozone chiefs to make a bank note that criminals would surely use to help support the currency in the beginning?
And now that the currency is established - get rid of the big notes!!!
'Give me control of a nations money supply, and I care not who makes it’s laws.'
-M A Rothschild, founder of the Rothschild banking dynasty.
Thursday, May 13, 2010
GFS: Evolution
GFS: Evolution on Fast-forward at ACM Queue:
Q: GFS was already good, so what do Google do in addiction to GFS's evolutionary improvements?
A: They do revolutionary improvement to GFS2
-I like that!
Q: GFS was already good, so what do Google do in addiction to GFS's evolutionary improvements?
A: They do revolutionary improvement to GFS2
-I like that!
Made in IBM Labs: IBM Researchers Develop Energy Efficient Method to Analyze the Quality of Data at Record Speeds - Yahoo! Finance
Made in IBM Labs: IBM Researchers Develop Energy Efficient Method to Analyze the Quality of Data at Record Speeds - Yahoo! Finance
Uncertainty quantification in risk analysis has become a key application. In this context, computing the diagonal of inverse covariance matrices is of paramount importance. Standard techniques, that employ matrix factorizations, incur a cubic cost which quickly becomes intractable with the current explosion of data sizes. In this work we reduce this complexity to quadratic with the synergy of two algorithms that gracefully complement each other and lead to a radically different approach. First, we turned to stochastic estimation of the diagonal. This allowed us to cast the problem as a linear system with a relatively small number of multiple right hand sides. Second, for this linear system we developed a novel, mixed precision, iterative refinement scheme, which uses iterative solvers instead of matrix factorizations. We demonstrate that the new framework not only achieves the much needed quadratic cost but in addition offers excellent opportunities for scaling at massively parallel environments. We based our implementation on BLAS 3 kernels that ensure very high processor performance. We achieved a peak performance of 730 TFlops on 72 BG/P racks, with a sustained performance 73% of theoretical peak. We stress that the techniques presented in this work are quite general and applicable to several other important applications.
Uncertainty quantification in risk analysis has become a key application. In this context, computing the diagonal of inverse covariance matrices is of paramount importance. Standard techniques, that employ matrix factorizations, incur a cubic cost which quickly becomes intractable with the current explosion of data sizes. In this work we reduce this complexity to quadratic with the synergy of two algorithms that gracefully complement each other and lead to a radically different approach. First, we turned to stochastic estimation of the diagonal. This allowed us to cast the problem as a linear system with a relatively small number of multiple right hand sides. Second, for this linear system we developed a novel, mixed precision, iterative refinement scheme, which uses iterative solvers instead of matrix factorizations. We demonstrate that the new framework not only achieves the much needed quadratic cost but in addition offers excellent opportunities for scaling at massively parallel environments. We based our implementation on BLAS 3 kernels that ensure very high processor performance. We achieved a peak performance of 730 TFlops on 72 BG/P racks, with a sustained performance 73% of theoretical peak. We stress that the techniques presented in this work are quite general and applicable to several other important applications.
HP's Memristor tech - better than flash? • The Register
HP's Memristor tech - better than flash? • The Register: "Memristor technology to equal the switching speed and endurance shown by current NAND flash cells.
The Memristor or memory resistor is said to be a fundamental electrical circuit element, along with the resistor, capacitor and inductor. Its electrical state remains unaltered between a device being switched on and off - just like flash memory, for which it is a follow-on candidate. In this it competes with Phase-Change Memory (PCM)
- Sent using Google Toolbar"
The Memristor or memory resistor is said to be a fundamental electrical circuit element, along with the resistor, capacitor and inductor. Its electrical state remains unaltered between a device being switched on and off - just like flash memory, for which it is a follow-on candidate. In this it competes with Phase-Change Memory (PCM)
- Sent using Google Toolbar"
Forget the GPad - is Google building a server chip? • The Register
Forget the GPad - is Google building a server chip? • The Register: "ese servers need chips. But the thing to remember about the ever-expanding Googlenet is that it's designed to process tasks that are broken into tiny little pieces. Google isn't interested in running the fastest processors on the planet. It's interested in running efficient chips that suit its pathological obsession with distributed computing.
- Sent using Google Toolbar"
- Sent using Google Toolbar"
This Changes Everything - Chuck's Blog
This Changes Everything - Chuck's Blog: "
EMC's global storage cloud plans
EMC's global storage cloud plans
Tuesday, May 11, 2010
DBMS2 Database management and analytic technologies
DBMS2--Database management and analytic technologies in a changing world
One of the best sources of information I have found about all aspects of high-performance analytic data processing/BI/DW/DSS etc
One of the best sources of information I have found about all aspects of high-performance analytic data processing/BI/DW/DSS etc
Oracle to Postgres Conversion
Im not getting a good feeling from what's happening at Sun since Oracle took over,lots of good people seem to have left, Solaris now needs a support contract to use after 90 days(read the download T&Cs)who knows how open MySQL will be? oh well there is always open Solaris and hopefully ZFS will go into more OSs likse it did into freeBSD
I personally get a bad feeling from ALL CLOSED STANDARD COMMERCIAL PROPERTY software.
At the end of the day Oracle's #1 job is to make money, databases ,applications,hardware ,software and services are all tools to achieve this
postgeSQL looks like the likely candidate due to is support in apache hadoop and even a variant in commercial products like Greenplums data warehouse cloud
anyway here is a spot to put Oracle to postgreSQL links, I think downreved ORA to latest PG is a doable migration. Just a straight DB is good, PLSQL makes it harder but there are conversion tools
Oracle to Postgres Conversion - PostgreSQL Wiki
Orafce Project - Oracle functions
Oracle to PostgreSQL
I personally get a bad feeling from ALL CLOSED STANDARD COMMERCIAL PROPERTY software.
At the end of the day Oracle's #1 job is to make money, databases ,applications,hardware ,software and services are all tools to achieve this
postgeSQL looks like the likely candidate due to is support in apache hadoop and even a variant in commercial products like Greenplums data warehouse cloud
anyway here is a spot to put Oracle to postgreSQL links, I think downreved ORA to latest PG is a doable migration. Just a straight DB is good, PLSQL makes it harder but there are conversion tools
Oracle to Postgres Conversion - PostgreSQL Wiki
Orafce Project - Oracle functions
Oracle to PostgreSQL
Monday, May 10, 2010
Instant Python
hetland.org : Instant Python
Good Python 101
I know I should use python more but I keep using perl
I know I should use perl more but I keep using shell script
I know I should automate more but ....
Good Python 101
I know I should use python more but I keep using perl
I know I should use perl more but I keep using shell script
I know I should automate more but ....
Avenger's handbook
The Avenger's Front Page: "The avenger's handbook
Never really had it in for anyone enough warrant using this stuff, but its funny none the less ;P
Good ideas for practical jokes perhaps
Never really had it in for anyone enough warrant using this stuff, but its funny none the less ;P
Good ideas for practical jokes perhaps
Fun With Prime Numbers
Fun With Prime Numbers
Great C programs for primes
Basically works through better and better divisor methods up to a Eratosthenes' seleve in a memory array then bits
Pretty old page but would be great to compile and see how fast this goes on modern hardware
Great C programs for primes
Basically works through better and better divisor methods up to a Eratosthenes' seleve in a memory array then bits
Pretty old page but would be great to compile and see how fast this goes on modern hardware
Sunday, May 9, 2010
RH Fedora core (lucky) 13 and Cirtix on FC 12
Fedora Core 13 is out soon, I use fedora on my laptop to keep current with the RedHat way of doing things as most tasks,commands and file locations are also the same in RHEL/CentOS etc
And there is always RDP (rdesktop) or ICA for visio/trim/exchange and other windows stuff
http://webmail.scatterpated.net:10080/index.php?name=News&file=article&sid=5
Nice guide - lets see if it works on FC13 https://fedoraproject.org/wiki/QA:Fedora_13_Install_Test_Plan#New_features_of_Fedora_13
And there is always RDP (rdesktop) or ICA for visio/trim/exchange and other windows stuff
http://webmail.scatterpated.net:10080/index.php?name=News&file=article&sid=5
Nice guide - lets see if it works on FC13 https://fedoraproject.org/wiki/QA:Fedora_13_Install_Test_Plan#New_features_of_Fedora_13
Wednesday, May 5, 2010
Wolfram|Alpha
Happy 1st Birthday, Wolfram|Alpha Blog!
Wolfram Alpha will come of age IMO when it can answer this kind of question
How many people are in the air at any given time
At any given time how many people are in aeroplanes
On average how many people are airborne
.....
From info on the net and some basic arithmetic it should be able to estimate this
Wolfram Alpha will come of age IMO when it can answer this kind of question
How many people are in the air at any given time
At any given time how many people are in aeroplanes
On average how many people are airborne
.....
From info on the net and some basic arithmetic it should be able to estimate this
Monday, May 3, 2010
Oracle Security Whitepapers
Oracle Security Whitepapers
Oracle Security, Hardening of Oracle Databases and Oracle Application Server.
Backtrak Oracle info too
Oracle Security, Hardening of Oracle Databases and Oracle Application Server.
Backtrak Oracle info too
Reverse-Engineering a Quantum Compass
Reverse-Engineering a Quantum Compass
How birds (possibly) use the quantum mechanical effect of entanglement to migrate
How birds (possibly) use the quantum mechanical effect of entanglement to migrate
cooltst: Cool Tools at OpenSPARC T1
cooltst, "CoolThreads Selection Tool", is a perl script that observes a running workload and applies various heuristics to assess whether that workload may be suitable for OpenSPARC ( http://www.opensparc.net/about.html ) and Oracle/Sun UltraSPARC T1, T2, and T2 Plus based servers.
The purpose of cooltst is to help you determine suitability of a Chip Multithreading (CMT) processor for a workload. Its recommendations should help you judge how much effort to put into a feasibility study which might include porting, prototyping, and/or performance measurement of your applications. cooltst is not a system sizing or capacity planning tool, and the rough approximations used internally in cooltst should not substitute for detailed performance analysis. cooltst runs on Solaris 8 and later, and on many Linux versions. cooltst is a system workload tool. It looks at the workload being executed by the system by all processes. It does not currently look at any particular process
Ref and more here.....
cooltools: Cool Tools at OpenSPARC T1
Download here
https://cds.sun.com/is-bin/INTERSHOP.enfinity/WFS/CDS-CDS_SMI-Site/en_US/-/USD/ViewProductDetail-Start?ProductRef=COOLTST-3.0-SP-LX-G-F@CDS-CDS_SMI
The purpose of cooltst is to help you determine suitability of a Chip Multithreading (CMT) processor for a workload. Its recommendations should help you judge how much effort to put into a feasibility study which might include porting, prototyping, and/or performance measurement of your applications. cooltst is not a system sizing or capacity planning tool, and the rough approximations used internally in cooltst should not substitute for detailed performance analysis. cooltst runs on Solaris 8 and later, and on many Linux versions. cooltst is a system workload tool. It looks at the workload being executed by the system by all processes. It does not currently look at any particular process
Ref and more here.....
cooltools: Cool Tools at OpenSPARC T1
Download here
https://cds.sun.com/is-bin/INTERSHOP.enfinity/WFS/CDS-CDS_SMI-Site/en_US/-/USD/ViewProductDetail-Start?ProductRef=COOLTST-3.0-SP-LX-G-F@CDS-CDS_SMI
Build Your Own Oracle RAC Cluster on Oracle Enterprise Linux and iSCSI
Great detailed step by step to build a good RAC cluster from commodity hardware
Build Your Own Oracle RAC Cluster on Oracle Enterprise Linux and iSCSI: "Build Your Own Oracle RAC Cluster on Oracle Enterprise Linux and iSCSI
by Jeffrey Hunter
Learn how to set up and configure an Oracle RAC 10g Release 2 development cluster on Oracle Enterprise Linux for less than US$2,700.
The information in this guide is not validated by Oracle, is not supported by Oracle, and should only be used at your own risk; it is for educational purposes only.
Build Your Own Oracle RAC Cluster on Oracle Enterprise Linux and iSCSI: "Build Your Own Oracle RAC Cluster on Oracle Enterprise Linux and iSCSI
by Jeffrey Hunter
Learn how to set up and configure an Oracle RAC 10g Release 2 development cluster on Oracle Enterprise Linux for less than US$2,700.
The information in this guide is not validated by Oracle, is not supported by Oracle, and should only be used at your own risk; it is for educational purposes only.
Sunday, May 2, 2010
SSH passwordless ssh trust
YouTube - passwordless ssh trust: "establish passwordless ssh trust between Linux host a3a and aix(aka busen) for user chris
[chris@a3a ~]$ ssh-keygen -t rsa
Generating public/private rsa key pair.
Enter file in which to save the key (/home/chris/.ssh/id_rsa):
Enter passphrase (empty for no passphrase):
Enter same passphrase again:
Your identification has been saved in /home/chris/.ssh/id_rsa.
Your public key has been saved in /home/chris/.ssh/id_rsa.pub.
The key fingerprint is:
bf:10:c1:a7:3b:8a:78:32:20:44:48:65:2b:14:dd:d2 chris@a3a
[chris@a3a ~]$ scp .ssh/id_rsa.pub chris@aix:.ssh/authorized_keys
chris@aix's password:
id_rsa.pub 100% 391 0.4KB/s 00:00
[chris@a3a ~]$ ssh aix
AIX 5.3
[chris:busen]/home/chris$
TA DA! (need this to NIMOL an AIX box from a Linux box)
[chris@a3a ~]$ ssh-keygen -t rsa
Generating public/private rsa key pair.
Enter file in which to save the key (/home/chris/.ssh/id_rsa):
Enter passphrase (empty for no passphrase):
Enter same passphrase again:
Your identification has been saved in /home/chris/.ssh/id_rsa.
Your public key has been saved in /home/chris/.ssh/id_rsa.pub.
The key fingerprint is:
bf:10:c1:a7:3b:8a:78:32:20:44:48:65:2b:14:dd:d2 chris@a3a
[chris@a3a ~]$ scp .ssh/id_rsa.pub chris@aix:.ssh/authorized_keys
chris@aix's password:
id_rsa.pub 100% 391 0.4KB/s 00:00
[chris@a3a ~]$ ssh aix
AIX 5.3
[chris:busen]/home/chris$
TA DA! (need this to NIMOL an AIX box from a Linux box)
Solaris 10 zone clone
YouTube - Solaris 10 zone clone
My video of a Solaris 10 zone clone - only took 36 seconds on a crappy ultrasparc2 450Mhz
My video of a Solaris 10 zone clone - only took 36 seconds on a crappy ultrasparc2 450Mhz
Art Vs Science & Evidence Based Design
a bit interesting....
Art Vs Science & Evidence Based Design
View more presentations from David Gillis.
One of the best articles Ive read on ICT design
We tell ourselves its a methodology applied with constraints but there are not a lot of degrees of freedom really and in most cases its just tradeoffs - you know the drill : fast,-cheap,reliable-choose any two
http://www.itworld.com/application-design-nlstipsm-080520
http://www.itworld.com/application-design-nlstipsm-080520
x86 Hypervisors and non hypervisors
Although I spend most of my `virtulsation and consolidation` time in the high end Unix/storage land (IBM PowerVM,VIO,WPAR,WLM- Oracle/Sun LDOMs,Containers/zones... USP-V HDP)
I do also use and keep an eye on developments in the x86 arena and run liveCD images such as network security toolkit ( http://downloads.sourceforge.net/nst/nst-vm-2.11.0.i586.zip ) or f5 BIG-IP ( https://www.f5.com/trial/ ) its a good quick and dirty way to get tools on your work PC without perverting it from its SOE image
For a good free hypervisor based virtulisation have a look at Xen(Ctrix xenserver) ,VMWare ESXi, Oracle Virtual Box and Microsoft Hyper-V
VMware options considered.....
ESX Server vs. ESXi ( http://www.vmware.com/products/esxi )
http://www.vnotion.com/?p=56
http://searchservervirtualization.techtarget.com/news/article/0,289142,sid94_gci1380354,00.html
And there is always VMware player!
XEN
http://www.citrix.com/English/ps2/products/feature.asp?contentID=1686939
MS Hyper-V
http://www.microsoft.com/windowsserver2008/en/us/hyperv-main.aspx
Oracle(Sun) Virtual Box
http://www.virtualbox.org
I also like some non hypervisor (ie emulators) eg QEMU www.qemu.org and bochs.sourceforge.net and www.winehq.org
Ive used QEMU quite a lot(in Windows to run Linux and via versa) and I would like to get an AIX POWER CHRP image working in it one day.
Some people are having a crack eg http://www.mail-archive.com/qemu-devel@nongnu.org/msg11382.html
I do also use and keep an eye on developments in the x86 arena and run liveCD images such as network security toolkit ( http://downloads.sourceforge.net/nst/nst-vm-2.11.0.i586.zip ) or f5 BIG-IP ( https://www.f5.com/trial/ ) its a good quick and dirty way to get tools on your work PC without perverting it from its SOE image
For a good free hypervisor based virtulisation have a look at Xen(Ctrix xenserver) ,VMWare ESXi, Oracle Virtual Box and Microsoft Hyper-V
VMware options considered.....
ESX Server vs. ESXi ( http://www.vmware.com/products/esxi )
http://www.vnotion.com/?p=56
http://searchservervirtualization.techtarget.com/news/article/0,289142,sid94_gci1380354,00.html
And there is always VMware player!
XEN
http://www.citrix.com/English/ps2/products/feature.asp?contentID=1686939
MS Hyper-V
http://www.microsoft.com/windowsserver2008/en/us/hyperv-main.aspx
Oracle(Sun) Virtual Box
http://www.virtualbox.org
I also like some non hypervisor (ie emulators) eg QEMU www.qemu.org and bochs.sourceforge.net and www.winehq.org
Ive used QEMU quite a lot(in Windows to run Linux and via versa) and I would like to get an AIX POWER CHRP image working in it one day.
Some people are having a crack eg http://www.mail-archive.com/qemu-devel@nongnu.org/msg11382.html
Saturday, May 1, 2010
Whats the difference between Software, hardware or Platform as a service - is it up in the clouds?
Nice cloud computing facilities overview
http://wso2.org/library/3634
http://wso2.org/library/3634
TOGAF 9 method overivew
http://www.enterprisearchitects.com/WhatWeDo/Training/tabid/70/language/en-US/Default.aspx
Nice quick overview vid of TOGAF9
Get an overview of the TOGAF 9 method and framework given by our Chief Architect, Craig Martin. This exclusive online video will take you through an hour and half of intensive overview of enteprise architecture seen from the TOGAF perspective.
Nice quick overview vid of TOGAF9
Get an overview of the TOGAF 9 method and framework given by our Chief Architect, Craig Martin. This exclusive online video will take you through an hour and half of intensive overview of enteprise architecture seen from the TOGAF perspective.
radar tracking of planes getting back in the air after the ash from Eyjafjallajökull clears
http://www.youtube.com/watch?v=j6BKdHEPmFA
flightradar24.com 's airspace rebooted!
....there are variants that overlay the ash clouds too
flightradar24.com 's airspace rebooted!
....there are variants that overlay the ash clouds too
AIX 6.1 TL5 and 5.3 TL12 and Systems Director 6.2
I see AIX 6.1 TL5 has just come out and AIX 5.3 TL12 has too - it will be the last Technology level for 5.3 with AIX 7 coming out soon.
IBM Systems Director 6.2 is planned to be GA June 25.
6.1 to 6.2 agents (same agent as Tivoli ITM) can be pushed out but upgrading from 5.x is a fresh install.
5.x is fat client, 6.x is all web and jpnl (has issues with MS IE but sweet with Firefox)
IBM Systems Director 6.2 is planned to be GA June 25.
6.1 to 6.2 agents (same agent as Tivoli ITM) can be pushed out but upgrading from 5.x is a fresh install.
5.x is fat client, 6.x is all web and jpnl (has issues with MS IE but sweet with Firefox)
POWER7 SAPS
power7 SAPS test results coming in eg 202180 for a p780
ER4 ERP6
http://www.sap.com/solutions/benchmark/sd2tier.epx
http://download.sap.com/download.epd?context=40E2D9D5E00EEF7C7B45573E5B04DE54A1B2DDE76E02CDB6CA5FF04ACD659743
ER4 ERP6
http://www.sap.com/solutions/benchmark/sd2tier.epx
http://download.sap.com/download.epd?context=40E2D9D5E00EEF7C7B45573E5B04DE54A1B2DDE76E02CDB6CA5FF04ACD659743
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