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Raymond Norris


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MathWorks

86 total contributions since 2003

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Answered
An license error occured when submitting a sbatch routine in slurm
A few comments MATLAB and Parallel Computing Toolbox only span across a single node. Calling parpool (or parfor, which will st...

18 hours ago | 0

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Answered
matlab install and launch problem
The system requirements for R2020b can be found here https://www.mathworks.com/support/requirements/matlab-system-requirem...

3 days ago | 0

Answered
Matlab Parallel Server worker to worker communication port
A few questions Which version of MATLAB are you running? Is MATLAB running on your local machine and MATLAB Parallel Server on...

13 days ago | 0

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how to ask for a pool size when using parpool with threads
There isn't from within parpool. When you create a Threads pool, the size of the pool is identical to maxNumCompThreads, which ...

13 days ago | 0

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Answered
Trouble in rewriting the for loop as a parfor loop
This might work, but two clarifying points These aren't the same for jj = col % 1:C_numhalf In your examp...

29 days ago | 1

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Answered
special case of using parallel computing toolbox in order to solve decomposed problems
Hi Bill, There might be a couple of options parfeval* createJob/createTask parfor won't do the trick because it doesn't allo...

1 month ago | 0

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how can I use the parallel computing for lsquarefit function.
Hi Sasidharan, Could you provide a bit more context, at a high level, how you're running your code. That is on your machine o...

1 month ago | 0

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Answered
Solving a large (263169x263169) linear system in cluster using 'directed' function
Hi Yaswanth, Take a look at codistributed arrays https://www.mathworks.com/help/parallel-computing/working-with-codistrib...

1 month ago | 0

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Answered
For loop and computational time
Hi Muhammad, I would suggest provide a bit more information when it comes to performance questions Which version of MATLAB? H...

1 month ago | 0

Answered
why the command coder.checkGpuInstall(envCfg) failed in a CPU worker
Hi Mikaël, MATLAB Coder and GPU Coder can be used by workers in interactive sessions (i.e. parpool). See more about what other...

2 months ago | 0

Answered
Using symbolic subs call inside parfor loop
Hi Antonio, You're just not giving each of the workers enough work to do. Maybe you only need to run nT=5, but see what happen...

2 months ago | 0

Answered
How to use parpool for different expressions ?
Hi Ole, The parpool command will start a pool of workers (in this case most likely on your 4-core machine). Conceptually, thin...

2 months ago | 0

Answered
Cannot access the function predict() in R2020b with statistics toolbox
Hi Pistachio, predict ships in the System Identification Toolbox. Thanks, Raymond

2 months ago | 0

Answered
Invalid path error during making Simulink target with GPU acceleration
Hi Filip, I would suggest contacting Technical Support (support@mathworks.com). Raymond

2 months ago | 0

Answered
using parallel computing outside a loop
Hi Aref, You don't explain how you're already using parfor -- that could negate what else you can do. Here's a crude example, ...

2 months ago | 1

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Answered
HPC MATLAB parpool and speed
Hi Ruan, There are two ways to speed up your code, implicitly and explicitly. You don't have much control over implicitly. MA...

2 months ago | 0

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Answered
read tiff image in parfor
Hi Wenjie, The file descriptor in the process of your MATLAB client (outside of the parfor) does not transfer to the processes ...

2 months ago | 0

Answered
Change folder that Matlab saves session information
If you run local parallel pools, the metadata is also stored in ~/.matlab (by default for Linux). You might consider deleting i...

2 months ago | 0

Answered
Why parfor cannot handle this
Hi Hussein, All MATLAB tokens must either be functions or variables. Keep in mind, regardless of whether or not code will be e...

2 months ago | 0

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Answered
My Home Licence on AWS Workspace with Parallel Computing only allows max of 2 Workers
Hi Sione, I'm going to check that the Home Edition doesn't impose any restrictions. With that said, could you clarify a few po...

2 months ago | 0

Answered
Any toolbox to use to increase the performance of the simulations using GPU?
Hi, To make use of your NVIDIA GPU, you'll need to install the Parallel Computing Toolbox. Please see the following for MATLAB...

2 months ago | 0

Answered
While executing Deep learning code , I am getting an error regarding GPU
Hi Krishna, It would apprear as though you don't have a supported GPU. What do you get when you run gpuDeviceCount gpuDevice...

3 months ago | 0

Answered
Installing MatLab 2018b software on LInux: install_unix not found
Hi Mikael, Probably best to reach out to Technical Support (support@mathworks.com). Raymond

3 months ago | 0

Answered
use parfor if larger than certian size
Hi Shane, There might be several options here, in no particular order 1. For starters, you might consider starting the...

3 months ago | 0

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Answered
Adding gnu parallel to Matlab search path
Hi Nicole, I would suggest contacting Technical Support (support@mathworks.com). They would be able to figure out if GNU paral...

3 months ago | 0

Answered
How can I get mpiprofile information from a parfor script?
Hi John, Prior to R2020a, you need to call mpiprofile within pmode or a parallel job, as shown in this example: https://w...

3 months ago | 2

Answered
Parallel.Job error message when 'PathDependencies' are set
Hi Kat, Try set(j, 'AdditionalPaths', PathsToAdd) Also, when using tab completion (as you type "set(j, ") you should see Addi...

3 months ago | 1

Answered
To perform cloud/ edge computing using matlab, got to know that I have to use parallel server toolbox. As, I'm a research student. Can I buy "student suite" licence matlab, without any additional charges for using AWS cloud.
Hi Divyashree, MathWorks has several Cloud solutions www.mathworks.com/cloud It's possible that your university already ...

3 months ago | 0

Answered
Can I simulate this example (diffraction pattern) on my CPU not my GPU?
Hi Muhamed, In the best situation, by simply casting your data to a GPU, the code following the data creation will run, so long...

3 months ago | 1

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Answered
Conversion to double from gpuArray is not possible.
Raza, My guess is that forwardLoss takes one or more input arguments, one of which is being passed a gpuArray instead of a doub...

3 months ago | 0

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