Recent questions tagged cluster

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cluster computing - Using a loop variable in a Bash script to pass different command-line arguments

I have a C++ program to which I pass two doubles as inputs from the command line using int main(int argc, char *argv[]){ ... 2+i*0.1 2+i*0.2 } See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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cluster analysis - Why is Spark Mllib KMeans algorithm extremely slow?

I'm having the same problem as in this post, but I don't have enough points to add a comment there. My dataset ... # of clusters k=1000 or 5000 See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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cluster computing - Running MPI on two hosts

I've looked through many examples and I'm still confused. I've compiled a simple latency check program from here, and it ... =2 10.0.2.5 slots=2 See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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cluster analysis - Clustering 500,000 geospatial points in python

I'm currently faced with the problem of finding a way to cluster around 500,000 latitude/longitude pairs in python ... is unknown ahead of time. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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cluster analysis - R: Clustering results are different everytime I run

library(amap) set.seed(5) Kmeans(mydata, 5, iter.max=500, nstart=1, method="euclidean") in 'amap ... clustering result from SimpleKmeans into R? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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cluster analysis - differences in heatmap/clustering defaults in R (heatplot versus heatmap.2)?

I'm comparing two ways of creating heatmaps with dendrograms in R, one with made4's heatplot and one with gplots of ... row") any ideas on this? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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cluster analysis - Running DBSCAN in ELKI

I am trying to cluster some geospatial data, and I previously tried the WEKA library. I found this benchmarking, ... save that for another post. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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319 views

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cluster analysis - How do I manually create a dendrogram (or "hclust") object ? (in R)

I have a dendrogram given to me as images. Since it is not very large, I can construct it "by hand" ... question from here) Many thanks, Tal See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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cluster computing - LSF (bsub): how to specify a single "wrap-up" job to be run after all others finish?

BASIC PROBLEM: I want to submit N + 1 jobs to an LSF-managed Linux cluster in such a way that the (N + 1)-st ... bsub -q someq ??? wrapup [???] See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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515 views

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cluster analysis - Input matrix to opencv kmeans clustering

This question is specific to opencv: The kmeans example given in the opencv documentation has a 2-channel ... (numSamples, numFeatures, CV_32F) See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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560 views

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cluster analysis - k-means clustering in R on very large, sparse matrix?

I am trying to do some k-means clustering on a very large matrix. The matrix is approximately 500000 rows x ... package to proceed. Many thanks See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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345 views

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cluster analysis - How does clustering (especially String clustering) work?

I heard about clustering to group similar data. I want to know how it works in the specific case for String. ... is more recommended for this? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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316 views

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cluster computing - Load Balancing (HAProxy or other) - Sticky Sessions

I'm working on scaling out my app to multiple servers, and one requirement is that a client is always communicating ... to a 25/75 split. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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415 views

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cluster analysis - Approaches for spatial geodesic latitude longitude clustering in R with geodesic or great circle distances

I would like to apply some basic clustering techniques to some latitude and longitude coordinates. Something along ... in each cluster? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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398 views

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cluster computing - How to hold up a script until a slurm job (start with srun) is completely finished?

I am running a job array with SLURM, with the following job array script (that I run with sbatch ... whole job array is finished? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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360 views

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cluster computing - How to change memory per node for apache spark worker

I am configuring an Apache Spark cluster. When I run the cluster with 1 master and 3 slaves, I see this on the ... I do to change used memory? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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