search for: xianhong

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2009 Aug 30
1
Combining: R + Condor in 2009 ? (+foreach maybe?)
..., I would like to perform parallel computing using R with Condor (hopefully using foreach or other recommended solutions, if available) for some "Embarrassingly parallel" problem. I will start by listing what I found so far, and then go on asking for help. So far I found the a manual by Xianhong Xie from Rnews_2005-2 (see page 13) Talking about R and condor: http://cran.r-project.org/doc/Rnews/Rnews_2005-2.pdf I also found several references for R and condor in the task views of High Performance Computing<http://cran.r-project.org/web/views/HighPerformanceComputing.html> : http://cr...
2006 Jan 24
1
Condor and R
...uccessfully linked R against the Condor libraries so that R can be run as a Condor job in the "standard" (not "vanilla") universe. The advantage of this would be that due to checkpointing, jobs can be suspended and transferred to another node. There is a good overview by Xianhong Xie here: http://cran.r-project.org/doc/Rnews/Rnews_2005-2.pdf Unfortunately, the article points out that some restrictions of Condor preclude us from running R in the standard universe. Does anyone know if this can be overcome? Thanks David -- David Reitter - ICCS/HCRC, Informatics, Univer...
2008 Apr 24
1
R and condor
Hello, I would be extremely grateful if anyone is able to provide any (rather obscure) advice on using R with Condor. I think I'm following Xianhong Xie's instructions (R News 5(2) 13-15) correctly, but my job just stays held in the queue (for days / months). I've checked condor_status to make sure there are plenty of machines available, but can't see any way to attack the problem of the non-running jobs. I did wonder whether I s...
2009 Sep 30
1
Managing random number generating, while using Condor parallel computing
Hello all, Recently I started playing with running R scripts on the Condor system in my institute. (For more on this, have a look at: Running Long R Jobs with Condor DAG by Xianhong Xie link: http://cran.r-project.org/doc/Rnews/Rnews_2005-2.pdf ) Might someone advice me about the following question: How should I handle the RNG (random number generation) in the running of parallel instances of R on different machines. For example, Let's say I wish to run 10 times a script...
2009 Sep 01
1
Logistic Politomic Regression in R
...I would like to perform parallel computing using R with Condor (hopefully using foreach or other recommended solutions, if available) for some "Embarrassingly parallel" problem. I will start by listing what I found so far, and then go on asking for help.. So far I found the a manual by Xianhong Xie from Rnews_2005-2 (see page 13) Talking about R and condor: http://cran.r-project.org/doc/Rnews/Rnews_2005-2.pdf I also found several references for R and condor in the task views of High Performance Computing<http://cran.r-project.org/web/views/HighPerformanceComputing.html> : http://cr...