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Forum: High Performance Computing 04-26-2009
8,493
Posted By fabtagon
Assuming your machines have 100 Mbit nics you'll...
Assuming your machines have 100 Mbit nics you'll get a remote access bandwidth of about 10 MB/s and a latency about 1 ms. That's not much better than using traditional swap space on a local hard...
Forum: High Performance Computing 04-20-2009
6,571
Posted By fabtagon
There is a feature called "checkpointing" around...
There is a feature called "checkpointing" around to tackle such problems.

Good starting point: https://ftg.lbl.gov/CheckpointRestart/Pubs/WTTC2008-BKK.pdf
Forum: High Performance Computing 03-25-2009
3,402
Posted By fabtagon
Afaik not. Intrest in such technologies has...
Afaik not. Intrest in such technologies has rapidly declined with the availability of cheap multicore processors. Depending on your task grid/cloud technologies might be an option.
Forum: High Performance Computing 03-19-2009
4,215
Posted By fabtagon
MPI implementations generally do not...
MPI implementations generally do not differentiate between "real" processors and nowadays cores. Therefore the command in your case should be "mpiexec -np 6 oasis" (assuming you have 6 cores).
...
Forum: High Performance Computing 03-16-2009
3,589
Posted By fabtagon
To give a useful answer one would need way more...
To give a useful answer one would need way more information about the type of problem you're going to run on these machines.
4,361
Posted By fabtagon
Getting a Mach 3.0 Kernel to boot and run is a...
Getting a Mach 3.0 Kernel to boot and run is a rather difficult task even if you have experience in such things. Starting from plain source code without toolchain scripts is a question of weeks - if...
32,253
Posted By fabtagon
What is your sh? This is normally a link to e.g....
What is your sh? This is normally a link to e.g. bash, ksh or tcsh. Given bash:

$ a=x.y.z
$ echo ${a//*.}
z
4,109
Posted By fabtagon
i) Read the...
i) Read the https://www.unix.com/unix-dummies-questions-answers/2971-simple-rules-unix-com-forums.html regarding forbidden duplicate posts like yours:...
2,400
Posted By fabtagon
duplicate post...
duplicate post https://www.unix.com/unix-advanced-expert-users/74113-ftp-pgp-encripted-file.html#post302216713

read the...
Forum: AIX 07-19-2008
3,103
Posted By fabtagon
I assume that disk layout will only be your first...
I assume that disk layout will only be your first problem, the filesystem itsself will be your second one. Some unix filesystems share a common origin, so maybe some will be able to at least read...
2,757
Posted By fabtagon
Have a look at the bash scripting guide's chapter...
Have a look at the bash scripting guide's chapter about controll structures and parameters. Use sleep or cron to run about once an hour.
Forum: SuSE 07-19-2008
3,319
Posted By fabtagon
You've taken the kernel sources supplied by...
You've taken the kernel sources supplied by OpenSuse, haven't you? Suse uses a modified kernel und therefore ships modified kernel sources (which have other features, ... - nearly all distributions...
Forum: SCO 07-15-2008
4,044
Posted By fabtagon
Based on my personal forecast of SCO's business...
Based on my personal forecast of SCO's business development I would install that system into a VM if I were on your shoes. You could emulate very common hardware to the guest OS and make installation...
Forum: Solaris 07-09-2008
13,787
Posted By fabtagon
SPARC is a processor architecture. There are 32...
SPARC is a processor architecture. There are 32 bit (SPARC V8) and 64 bit versions (SPARC V9). V9 has been introduced 1995 with the UltraSPARC I, a processor implementing that architecture. Today V8...
Forum: Solaris 07-08-2008
21
10,755
Posted By fabtagon
Maybe for some quite old version of bash. ...
Maybe for some quite old version of bash.

Cite from the files section of "man bash":

FILES
/bin/bash
The bash executable
/etc/profile
The...
Forum: Solaris 07-06-2008
21
10,755
Posted By fabtagon
(what specifically your ls alias is on your linux...
(what specifically your ls alias is on your linux box does not really matter, that was just make you able to actually understand what to do)

i) Does "ls --color" or "/usr/local/bin/ls --color"...
Forum: Solaris 07-05-2008
21
10,755
Posted By fabtagon
i) $MANPATH does not have to do something with...
i) $MANPATH does not have to do something with this.
ii) Also GNU ls does not give colors if the user does not request it. Get to your Linux box. Type "alias" at shell promt. You'll find something...
2,972
Posted By fabtagon
i) not every ` resp. ' is closed => can't work ...
i) not every ` resp. ' is closed => can't work
ii) tcsh does threat $something inside backticks as variables
iii) if you need backticks inside backticks use \` to escape them, so they won't get...
Forum: Linux 07-05-2008
2,799
Posted By fabtagon
rpm itself does not provide such a mechanism, its...
rpm itself does not provide such a mechanism, its a quite basic package format. But e.g. Suse's YaST is able to search through all available (installed and not installed) packages. Many distro's have...
8,802
Posted By fabtagon
Because whether or not you are allowed to delete...
Because whether or not you are allowed to delete a file depends on the rights (namely write) on the directory containing the file, not on the rights on the file itself. You can imagine a directory to...
1,962
Posted By fabtagon
Those head and tail commands (more precisely:...
Those head and tail commands (more precisely: they are written through from the originating files) give you end-of-line-marks, which echo does not filter out. Try filtering them out through e.g. tr....
17,869
Posted By fabtagon
n_fields=`echo $var|tr _ "\n"|wc -l` n=$[...
n_fields=`echo $var|tr _ "\n"|wc -l`
n=$[ $n_fields - 1 ]
4,445
Posted By fabtagon
Is this a directory mounted from NFS? (btw:...
Is this a directory mounted from NFS?

(btw: Germany has just scored 3:2 against Turkey and reached the semifinal of the european soccer championchip *yeah*)
2,502
Posted By fabtagon
i) use an awk implementation which deals with...
i) use an awk implementation which deals with long lines (e.g. GNU awk)
ii)#!/bin/sh
for line in `cat file1`
do
echo $line|tr \& \\n
done
(but your tr is likely to fail the same way your awk...
Forum: Solaris 06-25-2008
1,723
Posted By fabtagon
Try to actually understand what I've written, so...
Try to actually understand what I've written, so you
i) won't have such problems using answers on this board
ii) will be able to help yourself in the future

You should run those commands on e.g....
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