0
votes
0answers
18 views

How to parallelize crontab executions to increase user base for web app based on mongodb and mysql?

I have a symfony based web application that runs on mongodb and mysql backend. The principle of the application is that for each user there is a python script that runs 4-12 times a day on cronjobs ...
0
votes
2answers
51 views

What does MPICH stands for? [closed]

As we know that MPI is an abbreviation of Message Passing Interface. However, I am wandering about what does MPICH stands for? Is that just a brand name or does it has some terminology behind it? I ...
0
votes
1answer
59 views

How to execute a script 20 at a time with different variables at a time in parallel?

I am trying to run 20 files at a time, using warc.sh or a better way to put it is 20 instances of warc.sh at a time with directory contents as the input. I am also trying to watch the PIDs in case bad ...
0
votes
0answers
54 views

Via Command Line, run two commands to access two USB devices simultaneously

I'm using a compiled program (specifically http://sdr.osmocom.org/trac/wiki/rtl-sdr) to read from the respective USB radio. If it's of any importance, it depends on libUSB. rtl_sdr device0 file0.bin ...
0
votes
1answer
37 views

The exact workflow of PVM (Parallel virtual machine)

These days I am learning PVM technology for concurrent processing. I go through so many blogs, tutorials to understand . Yes, I got some points, but no one gives me clear workflow of how it perform ...
1
vote
1answer
158 views

Is it normal to overworking of just one CPU when using openMP

When I use OpenMP in FORTRAN to parallelize a program on linux, ' top' command show me just one processor working ~%800 instead of ~%100 x 8 processors. Is it a expected situation ?
4
votes
1answer
436 views

Parallel processing slower than sequential?

EDIT: For anyone who stumbles upon this in the future: Imagemagick uses a MP library. It's faster to use available cores if they're around, but if you have parallel jobs, it's unhelpful. Do one of ...
1
vote
1answer
106 views

Channelling processing power from Linux servers over a gigabit LAN to Macintosh system

As you may know Apple offers a program called Xgrid for sharing processing power between Macs. It also allows for easy clustering. Is there a way to channel processing power from Linux nodes over a ...
1
vote
0answers
71 views

Can I set up PVM in such way that master doesn't start own tasks?

We have a Perceus cluster (Warewulf) consisting of 4-core master and a number of 4-core nodes. I can start PVM on the master and then add all nodes - it works fine. However, there are other guys who ...
5
votes
3answers
3k views

Kill process after it's been allowed to run for some time

I want to limit the time a grep process command is allowed to run or be alive. For example. I want to perform the following: grep -qsRw -m1 "parameter" /var But before running the grep command I ...