Recent questions tagged Parallel

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parallel processing - Makefile run processes in background

I have this in my Makefile: run: for x in *.bin ; do ./$$x ; done such that it launches all ... executable running. Thank you in advance. See Question&Answers more detail:os...

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

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parallel processing - the desired number of processors are not used

I am running the following fortran code in parallel using openmp, but only one processor is working. I added some ... . Can anyone help me? See Question&Answers more detail:os...

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

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parallel processing - How can using cooperative groups feature of CUDA in windows

My GPU is GeForce MX150, pascal architecture, CC. 6.1, CUDA 9.1, windows 10. Although my GPU is pascal ... in windows? Thanks for your reply. See Question&Answers more detail:os...

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

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parallel processing - How to send a variable of type struct in MPI_Send()?

I have coded a program in C using MPI wherein the struct variable is to be sent in a ring fashion to the ... (struct info),1,2,MPI_COMM_WORLD); See Question&Answers more detail:os...

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

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parallel processing - Deliberately make an orphan process in python

I have a python script (unix-like, based on RHEL), called MyScript, that has two functions, called A and B. I' ... main', os.getpid() main() See Question&Answers more detail:os...

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

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parallel processing - F# parallelizing issue when calculating perfect numbers?

I am trying to optimize a small program which calculates perfect numbers from a given exponent. The program runs ( ... bit clear... Robert. See Question&Answers more detail:os...

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

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parallel processing - Possible sources for random number seeds

Two points -- first, the example is in Fortran, but I think it should hold for any language; second, the built ... each core, from run to run? See Question&Answers more detail:os...

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

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parallel processing - R doesn't reset the seed when "L'Ecuyer-CMRG" RNG is used?

I was doing some parallel simulations in R and I notice that the seed is not changed when the "L'Ecuyer-CMRG" rng ... (both Ubuntu 12.04 LTS). See Question&Answers more detail:os...

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

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parallel builds - From CMake setup 'make' to use '-j' option by default

I want my CMake project to be built by make -j N, whenever I call make from the terminal. I don't ... {CMAKE_MAKE_PROGRAM}) Thank you very much. See Question&Answers more detail:os...

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

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parallel processing - How to let R use all the cores of the computer?

I have read that R uses only a single CPU. How can I let R use all the available cores to run statistical algorithms? See Question&Answers more detail:os...

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

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parallel builds - From CMake setup 'make' to use '-j' option by default

I want my CMake project to be built by make -j N, whenever I call make from the terminal. I don't ... {CMAKE_MAKE_PROGRAM}) Thank you very much. See Question&Answers more detail:os...

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

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parallel processing - How to let R use all the cores of the computer?

I have read that R uses only a single CPU. How can I let R use all the available cores to run statistical algorithms? See Question&Answers more detail:os...

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

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parallel processing - How to write to a shared variable in python joblib

The following code parallelizes a for-loop. import networkx as nx; import numpy as np; from joblib import ... array numpy_array can be updated? See Question&Answers more detail:os...

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

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parallel processing - Do multiple CPUs compete for the same memory bandwidth?

In a multi-CPU machine, do the different CPUs compete for the same memory bandwidth, or do they access DRAM ... CPUs and DRAM are comparable)? See Question&Answers more detail:os...

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

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parallel processing - Set the parallelism level for all collections in Scala 2.10?

I understand how to set the parallelism level for a single parallel collection, via the mutable tasksupport field (c.f ... with take, map, etc.) See Question&Answers more detail:os...

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

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parallel processing - Could a CUDA kernel call a cublas function?

I know it sound weird, but here is my scenario: I need to do a matrix-matrix multiplication (A(n*k)*B ... ), this question could be discarded. See Question&Answers more detail:os...

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

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parallel processing - Implementation of model parallelism in tensorflow

I am a beginner to tensorflow. I'm currently working on a system with 2 GPUs each of 12GB. I want ... any implementation of model parallelism. See Question&Answers more detail:os...

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

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492 views

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parallel processing - Golang: how to verify number of processors on which a Go program is running

I am new to Google Go (Golang). My question is related to this post What exactly does runtime.Gosched do?. The ... () doTasks() wg.Wait() } See Question&Answers more detail:os...

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

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parallel processing - Best Spring batch scaling strategy

We have simple batch processes which are working fine. Recently we have new reqmnt to implement new batch ... improve/scale this process. See Question&Answers more detail:os...

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

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parallel processing - what are the models to distribute tasks in processes using openMPI?

The thing i want to ask from you is : i have several steps of a big source code (each step has a ... strategy makes a lot of difference ? See Question&Answers more detail:os...

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

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497 views

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parallel processing - Error calling serialize R function

I am loading the following packages into R: library(foreach) library(doParallel) library(iterators) I "parallelize" ... same worked for you! See Question&Answers more detail:os...

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

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634 views

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parallel processing - Understanding the differences between mclapply and parLapply in R

I've recently started using parallel techniques in R for a project and have my program working on Linux systems ... 's applicable to Windows? See Question&Answers more detail:os...

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

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1.3k views

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parallel processing - Run multiple R-scripts simultaneously

In my thesis I need to perform a lot of simulation studies, which all takes quite a while. My computer has ... night running all these scripts. See Question&Answers more detail:os...

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

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parallel processing - the difference between doMC and doParallel in R

What's the difference between doParallel and doMC in R concerning foreach function? doParallel supports ... vignettes/gettingstartedParallel.pdf See Question&Answers more detail:os...

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

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parallel processing - Vectorization for meshgrid in Matlab (or Octave)

Vectorized code in Matlab runs much faster than a for loop (see Parallel computing in Octave on a single machine -- package ... (xx.^2-yy.^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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445 views

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parallel processing - Negative speed up in Amdahl's law?

Amdahl's law states that a speed up of the entire system is an_old_time / a_new_time where the a_new_time ... answering questions like these? See Question&Answers more detail:os...

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

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641 views

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parallel processing - cuda 5.0 dynamic parallelism error: ptxas fatal . unresolved extern function 'cudaLaunchDevice

I am using tesla k20 with compute capability 35 on Linux with CUDA 5.With a simple child kernel call it ... kernel call everything works fine. See Question&Answers more detail:os...

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

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parallel processing - OpenMP private array - Segmentation fault: 11

When I try to parallelize my program in Fortran90 by OpenMP, I get a segmentation fault error. !$OMP ... subroutine. Nothing is changed. See Question&Answers more detail:os...

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

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