General matlab hints: http://math.aalto.fi/opetus/Mattie/MattieO/matlab.html
Installation and license activation on staff-owned computers¶
Matlab academic license permits installation on home computers for university personnel. Triton MDCS workers are available to anyone with a Triton account, which means the workers can be utilized from personal laptops as well.
Log into http://download.aalto.fi/ with your Aalto account. Look for the link Software for employees’ home computers which will take you to the Matlab download links. Download the UNIX version for Linux and OSX or the separate separate image for Windows.
The ISO image can be burned on a DVD or mounted on a virtual DVD drive.
Select the installer options as shown in the screenshots.
Mathworks account is required to continue with the installation.
Enter your account information in the installer to log in. If the password has been lost, Click on the Forgot your password? option to receive your password in email. OR
Register to Mathworks with the installer.
Click on I need to create an account.
Enter your name and email address. To be recognized as Aalto academic user the email address must end in one of aalto.fi, tkk.fi, hut.fi, hse.fi, hkkk.fi or uiah.fi domains.
The installer will ask for an activation key, which is shown here in the last screenshot.
You may leave out unnecessary toolboxes and change the installation location. Remember however, that the Parallel Computing Toolbox is necessary to run any Matlab batch jobs on Triton.
Install Triton-MDCS integration scripts¶
Continue MDCS setup from Matlab Distributed Computing Server.
Stand-alone license activation on Aalto Linux laptops¶
To install Matlab and activate a stand-alone license on your Aalto Linux computer:
Install Matlab using the command:
pkcon install matlab
/opt/matlab2022a/bin/activate_matlab.sh(replacing 2022a by whatever version you are using)
Select “Activate automatically using the Internet” and press Next.
Select the license saying “individual” and press Next.
Enter your Aalto user name as the login name and press Next.
Without a stand-alone license, you can only run Matlab if you have an internet connection to the Aalto network, or whatever internet connection and an Aalto VPN connection. With the stand-alone license, you can run Matlab even without an internet connection.
Matlab freezes with Out of Memory errors¶
Q: Matlabs freezes and I get errors like this. What to do?:
Exception in thread "Explorer NavigationContext request queue" java.lang.OutOfMemoryError: GC overhead limit exceeded at com.mathworks.matlab.api.explorer.FileLocation.<init>(FileLocation.java:89) at com.mathworks.matlab.api.explorer.FileLocation.getParent(FileLocation.java:126) ... ... ...
A1: Add more memory in Home -> Preferences -> General -> Java Heap memory
A2: Can you free up memory in your code sooner using the
Q: is there functional GPU acceleration? Does the acceleration even work?
A: run code:
>> g = gpuDevice; >> ng
A2: Just query some feature:
>> fprintf('%s\n', g.ComputeCapability)
a3: Show multiple devices if found:
>> for ii = 1:gpuDeviceCount g = gpuDevice(ii); fprintf(1,'Device %i has ComputeCapability %s \n', ... g.Index,g.ComputeCapability) end