Running multiple commands (or even computers) in parallel for more efficiency.

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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 ?
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How does multi-core architecture work with regard to parellelism?

I think I am correct in saying that scheduling is the/a main principle of the single core CPU, where the CPU is interrupted when switching from processing one set of instructions belonging to one ...
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losetup Find in Parallel / Concurrency

I'm writing a makefile that at some point builds image files. I'm using losetup -f in the file to find a free loop device when building out each image. Since the images are independent of each ...
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210 views

Kerrighed cluster does not use all nodes when running OpenMP

I've been given access to a recently built cluster that uses Kerrighed. I'm the first user of this cluster, so setup and configuration problems may be a possibility. I'm also totally new to ...
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Read non-blocking from multiple fifos in parallel

I sometimes sit with a bunch of output fifos from programs that run in parallel. I would like to merge these fifos. The naïve solution is: cat fifo* > output But this requires the first fifo to ...
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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 ...
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Does OpenMp supports Real Time Task Computing?

OpenMP API provides a portable environment for modeling shared memory parallel applications in multi-Core platform. Since it works on the top of kernel level threads, my concern is can we use OpenMp ...
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25 views

How does niceness relate to CPU allocation on Solaris?

The wikipedia article for nice describes the relationship as follows: As a simple example, when two otherwise identical CPU-bound processes are running simultaneously on a single-CPU Linux system, ...
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38 views

How to setup grid/clutster computers?

We have 3 labs and each lab have 30 computers having different OS's on them windows, Ubuntu mostly, so i was thinking if i can connect them using grid computing, so we can use them for our research ...
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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 ...
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65 views

Registration timeout on PBS cluster with Ipython parallel

I'm trying to set up ipython parallel on a linux cluster using PBS scheduling. Originally I asked on stackoverflow but I had no answers and I think this is probably a more superuser question. I was ...
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Can xargs be used to run arbitrary commands in parallel?

I'd like to be able to provide a list of arbitrary/different commands (varying binary/executable and arguments) and have xargs run those commands in parallel (xargs -P). I can use xargs -P fine ...
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need advice on hardware for doing parallel processing

We are intending to buy a powerful workstation for our daily processing of some seismic data. The process consists of doing numeric processing on data acquired on different seismic stations and by its ...
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Can I organize a computing cluster based on MS Server 2012 R2?

There is one server with preinstalled MS Server 2012 R2 and few workstations with Windows 7. All this connected to the LAN. Can I organize a computing cluster? Please, leave links to any tutorials ...