# Damian Pietrus

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MathWorks Application Engineer focused on MATLAB Parallel Server

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**Feeds**

Parallel computing license error

This licensing error should have a fix, so please take a look at the following article: https://www.mathworks.com/matlabcentral...

2 months ago | 1

Parallel pool failed to start with the following error. For more detailed information, validate the profile 'Processes' in the Cluster Profile Manager.

Hello, There was a recent issue with the licensing for local pools, and the fix can be found here: https://www.mathworks.com/m...

2 months ago | 0

How can I fix the warning and the error in parfor?

The warning about a(k) just means that a is being sent as a broadcast variable. This means that it is sent in its entirety to ea...

2 months ago | 2

| accepted

How to communicate with two Raspberri Pis from MATLAB in parallel

Based on your code, it looks like you're using the Local/Processes cluster profile to run your parfor loop on. With this setup,...

2 months ago | 0

(Why) Is Java not available in a thread-based environment?

Currently, thread pools do not support all functions and features that process pools do. Stealing from our doc page here: In g...

2 months ago | 0

Strange core usage when running Slurm jobs

Based on your code, it looks like you have correctly configured a cluster profile to submit a job to MATLAB Parallel Server. In...

2 months ago | 0

| accepted

GPU knnsearch performs slower than CPU for large matrices?

Hello Ishan, There is some overhead when moving variables between the CPU and the GPU. For shorter running calculations, this ...

2 months ago | 0

Effectiveness of implicit and explicit parallelization of fft2

Hello Matt, As mentioned already, there could be a few reasons for this. When you start up a pool of 4 workers in the "Process...

2 months ago | 0

| accepted

Set up multi nodes in cluster with 'sinfo' error message

There are a few ways that you can setup your MATLAB client to submit jobs to a cluster. Based on the fact that 'sinfo' is not o...

2 months ago | 0

How to use the createTask to capture the hardware data

When using createJob/createTask, each task is completely independent. This means that you wouldn't be able to interactively tak...

4 months ago | 0

| accepted

how to run the matlab program windows executable (eg. heat.exe) format in HPC cluster ?

The method of running this will depend on the cluster itself -- mainly the cluster operating system and the scheduler used. Sin...

4 months ago | 0

Batch processing alternative parameterizations of a program that uses parfor loops

Hello Brandon, Since you have access to a cluster, this would be a good fit for MATLAB Parallel Server. This will allow you to...

4 months ago | 0

how parfor distributes resources to each iteration if the number of cores is larger than the number of iterations

Since you mentioned working on a cluster, the first thing I'd like to address is making sure that you are requesting enough reso...

4 months ago | 1

| accepted

parpool use existing slurm job

Hello Frank, Unfortunately once you've already started up a Slurm job across 5 nodes, there's no current way to access all of t...

4 months ago | 0

| accepted

Parallel server licence error

I recommend reaching out to our Installation and Licensing Support team, who can be reached by email at email support@mathworks....

6 months ago | 0

| accepted

Validation parallel cluster profile error because of the plugin function 'independentSubmitFcn.m' error

Hey Wei, Thanks for sending that additional information. MATLAB uses SSH to connect to and run commands on a remote cluster. ...

7 months ago | 0

Job submission in the slurm based cluster, need help in submitting multiple tasks as a single job in slurm.

Edit: Changing from a comment to an answer and adding some additional information As you've pointed out, what you currently hav...

8 months ago | 2

| accepted

Does Matlab support parallel processing on Intel® Iris Xᵉ Graphics?

If you'd like to use a GPU for parallel processing, you'll need to have a discrete NVIDIA® GPU: https://www.mathworks.com/help/...

9 months ago | 0

Solved

Reverse the vector

Reverse the vector elements. Example: Input x = [1,2,3,4,5,6,7,8,9] Output y = [9,8,7,6,5,4,3,2,1]

2 years ago

Solved

Select every other element of a vector

Write a function which returns every other element of the vector passed in. That is, it returns the all odd-numbered elements, s...

2 years ago

Solved

Length of the hypotenuse

Given short sides of lengths a and b, calculate the length c of the hypotenuse of the right-angled triangle. <<https://i.imgu...

2 years ago

Solved

Triangle Numbers

Triangle numbers are the sums of successive integers. So 6 is a triangle number because 6 = 1 + 2 + 3 which can be displa...

2 years ago

Solved

Generate a vector like 1,2,2,3,3,3,4,4,4,4

Generate a vector like 1,2,2,3,3,3,4,4,4,4 So if n = 3, then return [1 2 2 3 3 3] And if n = 5, then return [1 2 2 3 3 3 4...

2 years ago

Solved

Make the vector [1 2 3 4 5 6 7 8 9 10]

In MATLAB, you create a vector by enclosing the elements in square brackets like so: x = [1 2 3 4] Commas are optional, s...

2 years ago

Solved

Finding Perfect Squares

Given a vector of numbers, return true if one of the numbers is a square of one of the numbers. Otherwise return false. Example...

2 years ago

Solved

Maximum value in a matrix

Find the maximum value in the given matrix. For example, if A = [1 2 3; 4 7 8; 0 9 1]; then the answer is 9.

2 years ago

Solved

Find the sum of all the numbers of the input vector

Find the sum of all the numbers of the input vector x. Examples: Input x = [1 2 3 5] Output y is 11 Input x ...

2 years ago

Solved

Find the Oldest Person in a Room

Given two input vectors: * |name| - user last names * |age| - corresponding age of the person Return the name of the ol...

2 years ago