How to Use Parallel Computing Toolbox in Matlab for Faster Computations
Parallel Computing Toolbox is a product from MathWorks that lets you solve computationally and data-intensive problems using multicore processors, GPUs, and computer clusters. It enables you to parallelize MATLAB applications without CUDA or MPI programming, using high-level constructs such as parallel for-loops, special array types, and parallelized numerical algorithms. You can also use the toolbox with Simulink to run multiple simulations of a model in parallel.
In this article, we will show you how to use Parallel Computing Toolbox in Matlab for faster computations. We will also explain how to download and install the toolbox legally, without resorting to cracks or illegal software.
Why Use Parallel Computing Toolbox
Parallel Computing Toolbox allows you to take advantage of the full processing power of your multicore desktops, GPUs, and computer clusters. By distributing your computations across multiple workers (MATLAB computational engines) that run locally or remotely, you can speed up your applications and solve larger problems. For example, you can use parallel for loops (parfor) to run independent iterations in parallel on multicore CPUs, for problems such as parameter sweeps, optimizations, and Monte Carlo simulations. You can also use GPUs directly from MATLAB using gpuArray, which lets you run more than 500 MATLAB functions automatically on NVIDIA GPUs. You can also call your own CUDA code directly from MATLAB if you are an advanced developer.
Parallel Computing Toolbox also supports many functions in other MATLAB and Simulink products that are parallel-enabled. For example, you can use Deep Learning Toolbox to train deep neural networks on GPUs or clusters. You can also use MATLAB Parallel Server to execute matrix calculations that are too large to fit into the memory of a single machine.
How to Download and Install Parallel Computing Toolbox
To download and install Parallel Computing Toolbox, you need to have a valid license for MATLAB and Parallel Computing Toolbox. You can get a free trial or purchase a license from the MathWorks website[^1^]. You can also check if your institution has a campus-wide license that you can use.
Once you have a license, you can download and install Parallel Computing Toolbox from the Add-On Explorer in MATLAB. To open the Add-On Explorer, go to Home > Add-Ons > Get Add-Ons. Then search for Parallel Computing Toolbox and click Install[^3^]. You can also download and install the toolbox from the MathWorks website[^1^].
After installing Parallel Computing Toolbox, you can verify that it is working by running this command in MATLAB:
This should display information about the toolbox version and license status.
How to Use Parallel Computing Toolbox in Matlab
To use Parallel Computing Toolbox in Matlab, you need to create a parallel pool of workers that will execute your parallel code. A parallel pool is a set of MATLAB sessions that run on your local machine or on a cluster. You can create a parallel pool using the parpool function or by clicking the Parallel button on the MATLAB toolstrip.
Once you have a parallel pool, you can use various features of Parallel Computing Toolbox to perform parallel computations. Some of the most common features are:
Parallel for loops (parfor): Use parfor instead of for to run independent iterations in parallel on multiple workers. For example:
parfor i = 1:10
Distributed arrays: Use distributed arrays to store large data sets across multiple workers and perform computations on them in parallel. For example:
A = distributed(magic(1000)); % create a 1000-by-1000 distributed matrix
B = A * A'; % perform matrix multiplication in parallel
GPU arrays: Use gpuArray to create arrays that reside on the GPU memory and run MATLAB functions on them using the GPU. For example:
A = gpuArray(magic(1000)); % create a 1000-by-1000 GPU array
B = fft2(A); % perform 2D FFT on the GPU
Batch jobs: Use batch to offload work from your MATLAB session 248dff8e21