Answered
How do I search through a tall array element by element?
You can make this code work by writing if gather(tA(i) == 0.5) disp('i is equal to 0.5') end however this will...

9 years ago | 0

| accepted

Answered
parallel.pool.Constant: An error occurred building a parallel.pool.Constant.
That error means that a worker crashed for some reason, I strongly suspect out-of-memory. Note that your |z| matrix is _huge_ - ...

9 years ago | 0

| accepted

Answered
How to avoid memory leaks when function inside parfor generates warning?
This problem is the subject of this <https://www.mathworks.com/support/bugreports/1372271 bug report>. If you are able to upgrad...

9 years ago | 1

| accepted

Answered
How can I combine two categorical columns of a tall table?
You can use |join|, like so: join([string(tx.Var1), string(tx.Var2)])

9 years ago | 0

Answered
Can I share a copy of a CONSTANT large array between workers of a parpool?
You might be able to combine use of |parallel.pool.Constant| with <https://www.mathworks.com/matlabcentral/fileexchange/28572-sh...

9 years ago | 0

Answered
Parpool: can't use windows and linux workers simultaneously.
Unfortunately, the MPI infrastructure used to support |spmd| does not allow mixing of Linux and Windows workers.

9 years ago | 0

| accepted

Answered
Accumarray with tall arrays
You can use <https://www.mathworks.com/help/matlab/ref/findgroups.html |findgroups|> and <https://www.mathworks.com/help/matlab/...

9 years ago | 1

| accepted

Answered
Hey, need help in filtering an image using PARFOR, been getting an error saying the varible hatx in a parfor cannot be classified.
The problem here is actually the fact that you've got two |for| loops iterating over values of |k|. You can see this with the fo...

9 years ago | 2

| accepted

Answered
How to use spmd with heavy input data ?
When using |spmd|, your best bet is to create the arrays within the |spmd| block itself, rather than transferring it from the cl...

9 years ago | 1

Answered
nvcc fatal : Unsupported gpu architecture 'compute_13' ??
To create GPU MEX files, you need to ensure that you have installed the version of the CUDA toolkit corresponding to the one use...

9 years ago | 1

Answered
How to make two uneven sized tables of even length and check and fill in missing data with NaN?
If you're using MATLAB R2016b, you can use the new <https://www.mathworks.com/help/matlab/ref/timetable.html |timetable|> class ...

9 years ago | 0

Solved

Create times-tables
At one time or another, we all had to memorize boring times tables. 5 times 5 is 25. 5 times 6 is 30. 12 times 12 is way more th...

9 years ago

Answered
Using parfeval for sequential calculations
As you observe, there is no way to pre-allocate arrays of |FevalFuture| objects. In this case, I would simply use |cell| arrays ...

9 years ago | 2

| accepted

Answered
How to publish ROS message inside a parfor loop?
I think what you need to do here is ensure you call |rosmessage| and |rospublisher| directly on the workers. One way to do that ...

9 years ago | 0

| accepted

Answered
Why can't I use the interface with Cantera in a batch job
It looks like there are additional dependencies for |ctmethods.mexw64| that are not being picked up automatically, so you might ...

9 years ago | 0

Answered
How to parallelize access to cell array
The workers that execute the body of |parfor| loops are separate MATLAB processes, and there is no automatic synchronisation of ...

9 years ago | 0

| accepted

Answered
Arrayfun with multidimensional input
You can do this by "binding" in |M| to your function handle, using an <https://www.mathworks.com/help/matlab/matlab_prog/anonymo...

9 years ago | 0

| accepted

Answered
Parallel pool: Conversion to double from cell is not possible
The problem here is that you haven't pre-allocated |S|, and unfortunately this doesn't quite work out correctly in |parfor|. The...

9 years ago | 1

Answered
Functions arrayfun and roots with GPU computing
The list of functions supported for use with |gpuArray| |arrayfun| is <https://www.mathworks.com/help/releases/R2016b/distcomp/r...

9 years ago | 0

| accepted

9 years ago | 1

Answered
how to read data and process it from text file in chunks without saving the data in Matlab
In recent versions of MATLAB (R2014b or later), you can use a <http://www.mathworks.com/help/matlab/ref/datastore.html |datastor...

9 years ago | 2

| accepted

Answered
How can I listen for completion of a job?
Unfortunately, there's currently no way to get event notifications from the |parallel.Future| objects returned by |parfeval|. ...

9 years ago | 1

Answered
How to stop figures from opening while waiting for parfeval with figure as input to finish
When you get ask the |FevalQueue| to give you the futures, they effectively get re-loaded from a stored version (roughly equival...

9 years ago | 1

Answered
Matlab workers in Parloop are not using the path order
This appears to be a problem with the automatic path mirroring that is used when setting up a parallel pool. Things work correct...

9 years ago | 0

| accepted

Answered
Debug a GPU function
The body of an |arrayfun| call is run on the GPU using a translation of the MATLAB code to a native form for the GPU. This gives...

10 years ago | 1

| accepted

Answered
what gpu's are supported
See <https://www.mathworks.com/discovery/matlab-gpu.html this page> for details of supported GPUs. You also need the latest <htt...

10 years ago | 0

| accepted

Answered
How do I plot a temporary variable in a parfor loop?
Unfortunately, parallel pool workers are separate MATLAB processes, and they cannot access the same figure handles that your des...

10 years ago | 0

| accepted

Answered
Parallelizing the Ising spin lattice (or Conway's game of life)
There's a similar example showing how to run this sort of "stencil" operation on the GPU <https://uk.mathworks.com/help/distcomp...

10 years ago | 2

Answered
MATLAB parallel loop with slight delays
You could use |spmd| to do this, but note that the following approach isn't completely ideal because it adds additional synchron...

10 years ago | 0

Answered
Invoke function in a parfor loop
The problem appears to be with passing COM objects to the workers. You need to build the COM object on the workers. One way (if ...

10 years ago | 0

| accepted