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Raymond Norris

MathWorks

Last seen: 2 dagen ago Active since 2003

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Answered
Queue simulation of two parallel servers
If I'm reading this right, I think this code for y=1:10000 inter_arrival_times(y) = exprnd(1/arrival_rate_m); arrival...

15 dagen ago | 0

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Answered
Parallel Pool No data errors
Glad you mentioned that you unplugged the Ethernet cable, that helped me track this down a bit (I think). It appears as though ...

21 dagen ago | 0

Answered
Does the MATLAB python interface support parallel processing?
I can't see a single python session being the issue. I'm betting you ran out of memory. Try the following I'm assuming you ha...

23 dagen ago | 0

Answered
Matlab Parallel Computing on Cluster - File not found (Task8-32.in.mat)
Hi @Antonio Cioffi. I'm not sure why mpiexec is crashing, but I can tell you why you're getting validation issues. When you sw...

24 dagen ago | 0

Answered
How does parallel computing toolbox works in nested loop?
MATLAB will run the inner parfor loop as a for-loop. Therefore, in your example, where you have a parallel pool of 8 workers, 2...

ongeveer een maand ago | 0

| accepted

Answered
SPMD Video Writing with dynamic frames
This might be an approach. Quite a bit of this is pseudo code and probably needs refining to synchronize the images into correc...

ongeveer een maand ago | 0

Answered
Parallel Computing Toolbox and parsim: two different versions of Matlab?
Consider using parfor and sim, but read this first Using sim Function Within parfor - MATLAB & Simulink (mathworks.com)

3 maanden ago | 0

Answered
parfor-value is not accessible
Can you reformat you post by highlighting your code and putting it into a CODE block? How are you running your parallel code, f...

3 maanden ago | 0

Answered
How to parallelize MATLAB function on the CPU
As @Arka mentioned, consider using the Parallel Computing Toolbox. In your case, I would suggest looking at rewriting your oute...

3 maanden ago | 0

Answered
How to shut down all running workers of paarpools?
Hi @Felix. If even if a single worker crashes, all workers will terminate. Can you elaborate a bit more on a couple of things ...

3 maanden ago | 0

Answered
MATLAB Parallel server: save output data of each worker by program independent job
Try the following function [] = test_func(input_var) % Store the local hostname for future runs persistent HN if isempty(H...

3 maanden ago | 0

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Answered
How to reset job ID in job monitor?
If you delete all of the jobs and then restart MATLAB, I would expect the job ID to be reset to 1.

4 maanden ago | 0

Answered
parpool sorting out the default number of workers
Hey @Bruno Luong, per your link, you have 8 Efficient cores, hence 14 (6+8) cores. For R2022b (which I think is the version you...

5 maanden ago | 0

Answered
Best parallel computing option for heavily serialized code
The very nature of a cascading algorithm (i.e., dependent on previous values) makes it impossible to parallellize. However, per...

6 maanden ago | 1

Answered
Parallel sever: Request GPU via SLURM
Hi @Christopher McCausland, try the following cluster = parcluster(); cluster.AdditionalProperties.AdditionalSubmitArgs = '--g...

6 maanden ago | 1

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Answered
parallel computing - cluster profile validation job test(create job) stuck in running
Any chance you have a local pool already running? If so, this would block validation. If not, I would suggest reaching out t...

6 maanden ago | 0

Answered
Connecting to a parallel server over the Internet
The "server" machine has to be reachabe from the Internet. If this is an isolated machine, without a public IP address, you won...

6 maanden ago | 0

Answered
How to have a global variable that can be accessed and edited and used inside a parfor loop? Or, how to show progress of a parallel job?
Workers in a parfor-loop can't communicate with each other, so a global variable won't work. Consider using a DataQueue. The p...

6 maanden ago | 1

| accepted

Solved


Get the length of a given vector
Given a vector x, the output y should equal the length of x.

6 maanden ago

Solved


Flip the vector from right to left
Flip the vector from right to left. Examples x=[1:5], then y=[5 4 3 2 1] x=[1 4 6], then y=[6 4 1]; Request not ...

6 maanden ago

Solved


Arrange Vector in descending order
If x=[0,3,4,2,1] then y=[4,3,2,1,0]

6 maanden 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 ...

6 maanden ago

Answered
Why am I getting invalid file identifier error?
fopen will return two output arguments: the file id and an error message if it failed (i.e., the file id is <0). Add the follow...

7 maanden ago | 0

Answered
parfor code can not run after wrapping into a function
Hi @Yulin, when you write your code without the function prototype function tempFcn() then as a script, MATLAB doesn't know if...

7 maanden ago | 0

Answered
Can parfor be used if no Parallel Computing Toolbox licenses are available?
Hi @Gregory Vernon. If Parallel Computing Toolbx is not installed, then MATLAB will run parfor serially, in reverse order. Tho...

7 maanden ago | 0

Answered
Suppress parallel toolbox logs
If you're not already, add a semicolon to suppress the evalc calls. evalc('pool = gcp();'); evalc('delete(pool)'); Above reas...

7 maanden ago | 0

Answered
Plotting graphs using parallel computing toolbox and communicating between workers
Look at https://www.mathworks.com/matlabcentral/answers/1829258-how-to-use-composite-objects-using-spmd#answer_1077643 for some ...

7 maanden ago | 0

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Answered
Using System() to submit cluster job to SLURM but gives "sbatch: command not found" error.
I suspect the command not found is for sbatch. If so, I would suggest hardcoding the location of it in your path. For example ...

8 maanden ago | 0

Answered
How to use composite objects using spmd
It's not related to your parallel code, the issue is the initialization of mov. This can be reproduced by the following functi...

8 maanden ago | 0

| accepted

Answered
Where we can check the total number of worker instances configured in Matlab parallel server.
Are you using MATLAB job scheduler (MJS) or your own (e.g. PBS)? MJS has a property that specifies the current number of idle w...

8 maanden ago | 0

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