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High performance computing

Proposed Q&A site for programmers of high performance software; administrators of supercomputers, clusters and grids.
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3  
What about Distributed Computing, Parallel Computing and General Purpose GPUs, Numerical Modeling and Simulation? – Tobias Kienzler Sep 2 '10 at 11:03
Or more specific proposals like High Energy Physics and Computational Chemistry? – Tobias Kienzler Sep 2 '10 at 11:03
2  
I am aware, but I don't believe in too-narrow site scopes. SO proved that huge amount of totally different topics can coexist on one SE without chaos, so it is possible; on the other hand proposals that are covered by this topic are not going very well, so maybe integration will help? – mbq Sep 2 '10 at 15:30
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21 Example Questions (3 closed)

active oldest votes
up vote 11 down vote
Should I use CUDA or OpenCL?
added by thyrgle Sep 2 '10 at 1:21
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up vote 10 down vote
How do I post a job on a Portable Batch System (PBS) cluster?
added by mbq, edited by WikiSpeedia hang-around Feb 5 at 17:24
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Context: Portable Batch System – WikiSpeedia hang-around Feb 5 at 17:24
up vote 10 down vote
How to convert my code to CUDA?
added by mbq Sep 1 '10 at 21:27
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Converting a code to CUDA is not a specification of a HPC computing. I think, it's better for GPGPU group ? – almorel Sep 13 '10 at 9:52
@almorel Making use of hardware accelerators? IMO it is full HPC. The idea is to make the site as broad as possible, so that it would gather the runaway amount of commitments. – mbq Sep 13 '10 at 11:18
@mbq I'm agree but I understood this sample question as porting a code to CUDA. But use Cuda or GPU unit in a cluster will be very interesting to discuss. – almorel Sep 13 '10 at 14:30
up vote 10 down vote
How do I figure out the memory/cpu usage of my MPI application running across X processors? I do not have shell access to the compute nodes.
added by Shawn Chin Sep 23 '10 at 9:45
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up vote 10 down vote
Is it possible to use a combination of OpenMP and MPI to better utilise a cluster of SMP/multicore machines?
added by Shawn Chin Sep 23 '10 at 9:46
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up vote 10 down vote
Is it possible to run valgrind on an MPI/OpenMP application?
added by Shawn Chin Sep 23 '10 at 9:46
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up vote 8 down vote
I use a third-party software that processes data. Is there anyway I would be able to multi-thread or distribute the workload to improve performance?
added by oracle certified professional Nov 26 '10 at 11:38
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up vote 8 down vote
How to connect different machines to work as a cluster?
added by Michael K Jun 24 '11 at 12:50
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up vote 7 down vote
Is there a DSP card supporting OpenCL?
added by Traroth, edited by WikiSpeedia hang-around Feb 5 at 17:04
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up vote 6 down vote
How can one run a prologue script as root in gridengine?
added by mattdm Dec 16 '10 at 3:55
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See actual real-life question here: serverfault.com/questions/212468 – mattdm Dec 16 '10 at 3:56
up vote 3 down vote
How can I tell if my code is slow because of cache misses?
added by Rich Mar 15 at 5:44
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up vote 2 down vote
How to make small grid to serve as a web service back-end? [closed]
added by mbq Sep 2 '10 at 15:38
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closed as off topic by Riccardo Murri, mattdm, akid, Ryan, Traroth May 11 '11 at 19:07

This question does not relate to the topic of the proposal.
It was closed as part of an automated migration of off-topic to close votes on September 29, 2011.

1  
This is a question for serverfault.com. – Riccardo Murri Oct 6 '10 at 7:42
Why? Grids are explicitely mentioned in the project description. – Traroth Feb 18 '11 at 10:40
It depends what your definition of "grid" is. In the context of your question, it doesn't make much sense. – Jon Bringhurst Jan 16 at 22:34
up vote 1 down vote
How does TDDFT work? [closed]
added by mbq Sep 2 '10 at 15:42
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closed as off topic by Martin Peters, DrFalk3n, mattdm, Traroth, crucified soul Jun 11 '11 at 17:29

This question does not relate to the topic of the proposal.
It was closed as part of an automated migration of off-topic to close votes on September 29, 2011.

up vote 1 down vote
What are some useful guides for building your own small cluster?
added by EpiGrad Jan 9 at 0:57
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up vote 1 down vote
Are there any advantages to writing [SSE] instructions directly vs. using [OpenCL]?
added by Jonathan DeCarlo Jan 12 at 21:46
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up vote 0 down vote
Application X was working for 500 hours, returned success, yet left ten billion NaNs in output. What have I done wrong? [closed]
added by mbq, edited by WikiSpeedia hang-around Sep 7 '10 at 19:17
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closed as off topic by dthorpe, DrFalk3n, Traroth, crucified soul, Michael K Sep 10 '11 at 7:28

This question does not relate to the topic of the proposal.
It was closed as part of an automated migration of off-topic to close votes on September 29, 2011.

Where exactly is the question in this? – dthorpe Sep 1 '10 at 23:48
@dthorpe How about this? – mbq Sep 2 '10 at 7:55
Better. Now, can this question be answered? It's awfully broad, vague. – dthorpe Sep 2 '10 at 18:52
By using X I meant a scheme covering many real questions about different applications. – mbq Sep 3 '10 at 6:34
Not a good example. Several bugs could cause such a problem, including development bugs which place is on StackOverflow. – Traroth Feb 18 '11 at 10:42
up vote 0 down vote
How do I query the remaining walltime available to my job on a SLURM/Moab cluster?
added by Jon Bringhurst, edited by WikiSpeedia hang-around Feb 5 at 17:03
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up vote -1 down vote
Lustre vs. InfiniBand (IB), what is your opinion?
added by almorel, edited by WikiSpeedia hang-around Feb 5 at 17:22
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Context: Lustre (file system), InfiniBand. – WikiSpeedia hang-around Feb 5 at 17:22
up vote -1 down vote
Which MPI implementaion is better for a development machine -- OpenMPI, LAM-MPI or MPICH2?
added by Shawn Chin Sep 23 '10 at 9:46
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2  
Not a good example of what I would like to see on the site: it's very subjective, IMHO. But I guess this kind of questions will be asked if the site ever makes it to public beta stage... – Riccardo Murri Oct 6 '10 at 7:45
up vote -1 down vote
How to scale a web application?
added by Eko Kurniawan Khannedy, edited by WikiSpeedia hang-around Feb 5 at 17:04
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As worded, this isn't really relevant. Maybe if you say something like... "What is the best practice for executing a job on a cluster when placing the job details on a message queue?" – Jon Bringhurst Jan 16 at 22:31
up vote -3 down vote
Grid versus Cloud versus MPI
added by DrFalk3n Oct 12 '10 at 22:29
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3  
Too vague. No actual question. – mattdm Dec 16 '10 at 15:33

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