Top500 2017

“The Top500 list the 500 fastest computer system being used today. In 1993 the collection was started and has been updated every 6 months since then. The report lists the sites that have the 500 most powerful computer systems installed. The best Linpack benchmark performance achieved is used as a performance measure in ranking the computers. The TOP500 list has been updated twice a year since June 1993.”

“Mflop/s is a rate of execution, millions of floating point operations per second. Whenever this term is used it will refer to 64 bit floating point operations and the operations will be either addition or multiplication.

Gflop/s refers to billions of floating point operations per second and Tflop/s refers to trillions of floating point operations per second.”

Source:  Top 500 website

Below is the result of my laptop running Linpack.java  : 228MFlops !!!  🙂

Below is the current 2017 top500 results

Super Computing conference comes to Portland, OR

I attended the 2006 event in Seattle, WA – learning about building super computers using Windows Computing Cluster, Rocks [Linux] etc and various applications of super computing / high performance computing which include designing the new Boeing Dreamliner 787, health and weather forecasting etc, crunching tons of seismic research data etc. Here is the link. This event will be held at OCC – Oregon Convention Center, November 14-19 2009.

Microsoft Certified Technology Specialist: Sql Server 2008…

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Passed my Microsoft Cerfification Exam on first attempt on Tuesday June 2nd! Score: 814

The certificate says l’m now recognized as a MCTS – Microsoft Certified Technology Specialist: SQL Server 2008, Implementation and Maintenance. The exam is the MCTS 70-432. Next goal is the 70-450 which has no study book in print, and the only material l can find so far is the CBT-NUGGETS training video on Exam 70-450 which is very good.

Materials l used to study other than multiple SQL Server instances on my laptop, Virtual PC Windows 2008 Machines with SQL Server 2008 installed – for database replication, mirroring and failover clustering practise!!!
– MCTS Self-Paced Training Kit (Exam 70-432): Microsoft® SQL Server® 2008 – Implementation and Maintenance by Mike Hotek (Very good, in-depth all round material, lab oriented book with real life stories). This seems to be the only main book out there.
– Self Test Software for MCTS 70-432, bought the download version of this excellent practise test program.
– Microsoft Sql Server 2008 Books on line (download the latest update from Microsoft)
– Took the official Microsoft 6231 course at SQLSoft (Beaverton)
– Books on Microsoft SQL Server 2005 exam 70-431

Microsoft Sql Server Administration…

Useful commands I’ve found from various sources for Microsoft Sql Server 2005/2008 include:

EXEC sp_configure
GO
–Instance level principals.
SELECT * FROM sys.asymmetric_keys
SELECT * FROM sys.certificates
SELECT * FROM sys.credentials
SELECT * FROM sys.linked_logins
SELECT * FROM sys.remote_logins
SELECT * FROM sys.server_principals
SELECT * FROM sys.server_role_members
SELECT * FROM sys.sql_logins
SELECT * FROM sys.endpoints
GO

–Database level principals.
SELECT * FROM sys.database_principals
SELECT * FROM sys.database_role_members
GO
ALTER LOGIN sa WITH NAME = hiddenSaAccount
GO
–Check your user execution context
SELECT SUSER_SNAME(), USER_NAME()
GO
–View the list of objects in the database
SELECT * FROM sys.objects
GO
–Change user context
EXECUTE AS USER = ‘AnotherUserName’
GO
–Return to your login
REVERT
GO
–explore database files
select * from AdventureWorks.sys.database_files
select * from master.sys.database_files
select * from msdb.sys.database_files
select * from tempdb.sys.database_files
–explore endpoints
select * from sys.endpoints
select * from sys.tcp_endpoints
select * from sys.http_endpoints
select * from sys.database_mirroring_endpoints
select * from sys.service_broker_endpoints

–Security

SELECT * FROM sys.symmetric_keys
GO

SELECT * FROM sys.certificates
GO

Build your own Virtual World…

Check out this amazing video – World Builder by Bruce Branit Some day l guess we might be building entire cities virtually like this, walk through them and then create them. Beats a 3D object molder.

Heres a direct link to the quicktime .mov file for faster viewing on your PC. [ Right click, save as, download]

Network Addressed Storage.. [NAS]

Looking for a NAS, with gigabit interface (l’m done with slow access speeds via usb interface to my internal gigabit network) so as to speed up my rendering server farm file access, and expandable with support for additional sata drives and affordable. Finally settled for the DLINK DNS-321 for $130 and bought just one 1Tb SATA drive that was on sale for $87 – a Samsung 10,000rpm 32Mb buffer drive. As sata drives fall in price and l get more bang for a buck l can add to this unit. I can mirror a drive, but the unit doesnt support ntfs etc – which is fine for me since my shared files on this will be media files, mp3 and rendered jpeg pictures. It has a web interface control and can be accessed remotely via ftp anywhere on the net. This system is built on a GPL / Linux based system, and will format your drive to ext2 format. There might be a hack out there for a more native windows file system support.

Update: 5/14/09. I’m returning this item. The file transfer time to and fro ext2 to my ntfs formatted drives is so so slow, about 10-20x (even by Windows wrong estimates). The gigabit connectivity makes no noticable difference, even when on the same Cisco 5 port Gigabit switch as my server. I’ve ended up overloading my faithful dell sc430 server by “creatively” adding this 1Tb drive to it, the server is designed to support only 2 sata hard drives. See picture below.

capture_dns321_300

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See this website on links for DNS-321 NAS Hacking

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