Frequently Asked Questions - Revision history

Plazonic: add note about gp computations

2008-05-29T13:08:35Z

add note about gp computations

Plazonic: /* Run computations and disconnect */

2006-10-04T15:19:39Z

Run computations and disconnect

Plazonic: /* Run computations and disconnect */

2006-10-03T13:46:42Z

Run computations and disconnect

Plazonic: added guidelines

2006-10-03T13:36:52Z

added guidelines

Plazonic: Added password changing notes

2005-11-15T15:58:41Z

Added password changing notes

Plazonic: more email settings

2005-11-08T05:09:01Z

more email settings

Plazonic: more email info added

2005-11-08T04:01:39Z

more email info added

Plazonic: refer to howtos

2005-09-24T21:32:15Z

refer to howtos

Plazonic: First real edit, added some stuff about e-mail

2005-09-07T02:04:16Z

First real edit, added some stuff about e-mail

Plazonic at 01:39, 7 September 2005

2005-09-07T01:39:03Z

@@ Line 42: / Line 42: @@
   nohup nice -19 mycomputation_program > /dev/null 2>&1 &
-=== Run disconnected computations for matlab ===
+=== Run disconnected computations with matlab ===
 If you want to run matlab computations you can do something like:
   nohup nice -19 matlab -nodisplay -nodesktop -nojvm -nosplash < mymatlab_commands.m > my_output.txt 2>&1 &

@@ Line 35: / Line 35: @@
 * Computational jobs on math.princeton.edu are automatically reniced and you should limit yourself to at most 2 computations at any one time.  If your computation is a long lasting one you do not have to renice your job but if you intend to run lots of short ones please do so (as automatic renicing does not kick in immediately).
 === Run computations and disconnect ===
-If your computation is a long lasting one it is best if you start it up in such a way that you can logout and the computation will continue.  This also prevents your computations from failing if your loose network connectivity.  You should run your computations with a command of this type:
+If your computation is a long lasting one it is best if you start it up in such a way that you can logout and the computation will continue.  This also prevents your computations from failing if your loose network connectivity.  TO achieve this you should run your computations with nohup command.  Nohup command will make sure the job is disconnected from the terminal, or in other words it will make sure that when you disconnect your job will not get the "I have loged out, please quit" signal.  For example you should type something like this:
   nohup nice -19 mycomputation_program > my_output.txt 2>&1 &
-This will run your job, reniced to 19, and any output (both regular and error) will be placed into file my_output.txt.  If you want to place the error output into another file you can do:
+This will run your job, reniced to 19, and any output (both regular and error) will be placed into file my_output.txt.    In other words If you want to place the error output into another file you can do:
   nohup nice -19 mycomputation_program > my_output.txt 2> my_erroroutput.txt &
 If you do not need the output from the command, e.g. because your program dumps its results directly into various files, you can redirect all of the other output into /dev/null:
   nohup nice -19 mycomputation_program > /dev/null 2>&1 &
 === Run disconnected computations for matlab ===
 If you want to run matlab computations you can do something like:
   nohup nice -19 matlab -nodisplay -nodesktop -nojvm -nosplash < mymatlab_commands.m > my_output.txt 2>&1 &

← Older revision		Revision as of 13:46, 3 October 2006
Line 35:		Line 35:
	* Computational jobs on math.princeton.edu are automatically reniced and you should limit yourself to at most 2 computations at any one time. If your computation is a long lasting one you do not have to renice your job but if you intend to run lots of short ones please do so (as automatic renicing does not kick in immediately).		* Computational jobs on math.princeton.edu are automatically reniced and you should limit yourself to at most 2 computations at any one time. If your computation is a long lasting one you do not have to renice your job but if you intend to run lots of short ones please do so (as automatic renicing does not kick in immediately).
	=== Run computations and disconnect ===		=== Run computations and disconnect ===
		+	If your computation is a long lasting one it is best if you start it up in such a way that you can logout and the computation will continue. This also prevents your computations from failing if your loose network connectivity. You should run your computations with a command of this type:
		+	nohup nice -19 mycomputation_program > my_output.txt 2>&1 &
		+	This will run your job, reniced to 19, and any output (both regular and error) will be placed into file my_output.txt. If you want to place the error output into another file you can do:
		+	nohup nice -19 mycomputation_program > my_output.txt 2> my_erroroutput.txt &
		+	If you do not need the output from the command, e.g. because your program dumps its results directly into various files, you can redirect all of the other output into /dev/null:
		+	nohup nice -19 mycomputation_program > /dev/null 2>&1 &
		+	=== Run disconnected computations for matlab ===
		+	If you want to run matlab computations you can do something like:
		+	nohup nice -19 matlab -nodisplay -nodesktop -nojvm -nosplash < mymatlab_commands.m > my_output.txt 2>&1 &

@@ Line 24: / Line 24: @@
 You can also find password changing webpage under the "My Account" on the left side menu of the [https://www.math.princeton.edu/mail webmail].
-== Remote connections ==
+== Running computations ==
+=== Computation guidelines ===
-== Computational Resources ==
+These are the guidelines for running computations on Math/PACM machines:
+* Unless running computations on dedicated machines (like Comp or Macomp cluster or your own desktop) all jobs should be reniced to -19, e.g.:
-=== What Computational clusters are available ===
+ nice -n 19 mycomputation

@@ Line 15: / Line 15: @@
 Vacation messages can be set through Math/PACM webmail by going to  [https://www.math.princeton.edu/horde3/vacation/ https://www.math.princeton.edu/horde3/vacation/].  You can also find vacation setting webpage under the "My Account" on the left side menu of the [https://www.math.princeton.edu/mail webmail].
 At vacation webpage you can turn the vacation message on and off, specify the subject and content of vacation message replies and specify how often to send vacation message replies.  Finally you can even set vacation start and end times.
 == Printing in Fine Hall ==

@@ Line 11: / Line 11: @@
 Open up in your browser [http://www.princeton.edu/imap OIT Account Management Page].  You will be asked for your OIT username and password.  Once logged in click on "Set Email Delivery" link on the left.  That will bring "Where Is My Mail Going" information - if you you haven't changed your e-mail delivery location from default it is likely to be <tt>yourusername@mail.Princeton.EDU</tt>.  Click on "Change Entry" button (found next to current delivery E-mail) and on next screen forward your Priceton email by setting your primary mail delivery location to your <tt>yourusername@math.princeton.edu</tt> E-mail address and then click on "Submit Changes".
 === Forward e-mail from your math account ===
-To forward all of your math e-mail to another account, e.g. if you are leaving Princeton, create in your home directory .forward file and place in it the e-mail where your email will be forwarded.
+To forward all of your math e-mail to another account, e.g. if you are leaving Princeton, create in your home directory .forward file that contains the e-mail address where your email will be forwarded.  You can specify multiple E-mail addresses, each on its own line.
 === Vacation messages ===
-Vacation messages can be set through Math/PACM webmail under the "My Account" menu on the left side menu.  You can also reach this webpage directly by going to [https://www.math.princeton.edu/horde3/vacation/ https://www.math.princeton.edu/horde3/vacation/] link.
+Vacation messages can be set through Math/PACM webmail by going to  [https://www.math.princeton.edu/horde3/vacation/ https://www.math.princeton.edu/horde3/vacation/].  You can also find vacation setting webpage under the "My Account" on the left side menu of the [https://www.math.princeton.edu/mail webmail].
 == Printing in Fine Hall ==

@@ Line 4: / Line 4: @@
 === Read e-mail ===
 You can read your e-mail in one of the following ways:
-* login via ssh to math.princeton.edu or pacm.princeton.edu and use pine or mutt
+* login via ssh to math.princeton.edu or pacm.princeton.edu and use pine, mutt or other terminal based E-mail clients
-* use [http://www.math.princeton.edu/mail math webmail]
+* use [http://www.math.princeton.edu/mail Math Dept. WebMail]
-* configure your e-mail client (like Thunderbird, Mozilla, Outlook) to access your e-mail via IMAP by following instructions at
+* configure your e-mail client (like Thunderbird, Mozilla, Outlook and others) to access your e-mail via IMAP by following instructions in [[HowTos#E-mail configuration|HowTos section about E-mail configuration]]
 === Forward e-mail from Princeton to your math account ===
 === Forward e-mail from your math account ===

← Older revision		Revision as of 02:04, 7 September 2005
Line 2:		Line 2:

	== E-mail ==		== E-mail ==
		+	=== Read e-mail ===
		+	You can read your e-mail in one of the following ways:
		+	* login via ssh to math.princeton.edu or pacm.princeton.edu and use pine or mutt
		+	* use [http://www.math.princeton.edu/mail math webmail]
		+	* configure your e-mail client (like Thunderbird, Mozilla, Outlook) to access your e-mail via IMAP by following instructions at
		+	=== Forward e-mail from Princeton to your math account ===
		+	=== Forward e-mail from your math account ===
		+	To forward all of your math e-mail to another account, e.g. if you are leaving Princeton, create in your home directory .forward file and place in it the e-mail where your email will be forwarded.
		+	=== Vacation messages ===
		+
		+	== Printing in Fine Hall ==

	== Remote connections ==		== Remote connections ==