2010-09-02T17:40:12-05:00 lifetype-1.2.10_r6971 http://emi.extprovider.com/rss.php?blogId=1&profile=atom Copyright (c) myside tag:emi.extprovider.com,2010-09-02:660 2010-09-02T17:40:12-05:00

Can you complete this word?  If so post a website URL of something that this describes in a comment.

myside Day to Day Can you complete this word?  If so post a website URL of something that this describes in a comment. tag:emi.extprovider.com,2010-09-02:659 2010-09-02T10:54:34-05:00

Total Credit Last 60 Days Total Credit - Last Months   Recent Average Credit Last 60 Days Einstein@Home is ...

myside Projects Total Credit Last 60 Days Total Credit - Last Months   Recent Average Credit Last 60 Days Einstein@Home is a program that uses your computer's idle time to search for gravitational waves from spinning neutron stars (also called pulsars) using data from the LIGO gravitational wave detector. Learn about this search at einsteinathome.org , Einstein Online and in our S3 report . Einstein@Home also searches for radio pulsars in binary systems, using data from the Arecibo Observatory in Puerto Rico. Read more about this search here . Einstein@Home is a World Year of Physics 2005 and an International Year of Astronomy 2009 project supported by the American Physical Society (APS) and by a number of international organizations. SIMAP : Today, protein sequence comparison is the most powerful tool in computational biology for characterizing protein sequences because of the enormous amount of information that is preserved throughout the evolutionary process. SIMAP is a public database of pre-calculated protein similarities that plays a key role in many bioinformatics methods. It contains about all currently published protein sequences and is continuously updated. The computational effort for keeping SIMAP up-to-date is constantly increasing. Please help to update SIMAP by calculating protein similarities on your computer. The computing power you donate supports manifold biological research projects that make use of SIMAP data. SETI@home is a scientific experiment that uses Internet-connected computers in the Search for Extraterrestrial Intelligence (SETI). You can participate by running a free program that downloads and analyzes radio telescope data.  tag:emi.extprovider.com,2010-08-31:657 2010-08-31T02:15:02-05:00

This documentation assumes you have a compiled and installed NTP server version of 4.2.6 or newer. NTP is a protocol designed to synchronize the clocks of computers over a ...

myside Software Projects This documentation assumes you have a compiled and installed NTP server version of 4.2.6 or newer. NTP is a protocol designed to synchronize the clocks of computers over a network. NTP version 3 is an internet draft standard, formalized in RFC 1305 . NTP version 4 is a significant revision of the NTP standard, and is the current development version, but has not been formalized in an RFC. Simple NTP (SNTP) version 4 is described in RFC 2030 . - [ source ] The first two steps to begin the installation is to setup a NTP log file and a statsdir which will hold the servers log messages and time computations acquired from external stratum time servers.  Here is an example of the first two lines in a ntp.conf (/etc/ntp.conf) file: logfile /var/log/ntpd statsdir /var/log/ntpstats/ When compiling by source, you may create the log file by issuing the command "touch /var/log/ntpd" and create the directory which will hold your NTPD statistics such as peer communications with the command "mkdir /var/log/ntpstats". Now we want to keep good track of NTP server communication to better help your server synchronize its internal time clock.  We will add the following four lines for this: statistics loopstats peerstats clockstats filegen loopstats file loopstats type day enable filegen peerstats file peerstats type day enable filegen clockstats file clockstats type day enable Next we will list the NTP servers you would like to communicate with in order to synchronize your system's time in conjunction with.  These servers should only be used on a proven and sturdy machine: server time.nist.gov server time-a.nist.gov server time-b.nist.gov server utcnist.colorado.edu server utcnist2.colorado.edu At this point you will want to secure your NTP server.  To do so we will start by denying all traffic in or out of this communication medium: restrict default ignore Now in order to negotiate synchronization to the time servers listed above, you will want to allow your server permission to query these hosts by resolving the IP addresses and granting query actions: # time.nist.gov restrict 192.43.244.18 mask 255.255.255.245 nomodify notrap noquery # time-a.nist.gov restrict 129.6.15.28 mask 255.255.255.245 nomodify notrap noquery # time-b.nist.gov restrict 129.6.15.29 mask 255.255.255.245 nomodify notrap noquery # utcnist.colorado.edu restrict 128.138.140.44 mask 255.255.255.245 nomodify notrap noquery # utcnist2.colorado.edu restrict 128.138.188.172 mask 255.255.255.245 nomodify notrap noquery In order to allow local or remote hosts access to your time server after it has been properly synced to your correct time, you may add the following rule to respond to queries, with this example, on a class C network: restrict 192.168.1.0 mask 255.255.255.0 nomodify notrap Most importantly, do not forget to assign your drift file and directory: driftfile /var/lib/ntp/drift You may create this using: "mkdir /var/lib/ntp; touch /var/lib/ntp/drift".  Note that if you decide to run NTPD under a non root user, this directory must have full write access to your alternative username, as with the ntpd and statsdir file and directory mentioned above. I will touch on two ntpd command switches that may come in usefull. The "-g" switch will allow your NTPD process to continue running if your internal time clock is off by more than 1000 seconds.  If this switch is not present and your time is stewed & spewed, the process will die.  The "-I eth0" switch, as an example, allows you to bind NTPD to a physical network interface.  The interface may be eth0, eth1, lo, etc. The configuration above should get you headed in the right direction to set up a network time server and client.