MATLAB: How can we utilize GPU shared memory

gpuParallel Computing Toolbox

How can we utilize GPU shared memory? I got the error "GPU out of memory". However, the task manager said there was a shared GPU memory of 7.9 GB which was not utilized.

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The "shared GPU memory" shown in task manager is not memory on the GPU itself, but part of the overall system memory that Windows makes available to the GPU. Unfortunately, we do not support utilizing that memory.

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MATLAB: For GPU computing, dedicated memory size will be important or not

The amount of memory available in your GPU should not affect how quickly it performs calculations (all other things being equal), but it will affect the size of problem you can solve. When you convert MATLAB data to be a gpuArray, it must be able to fit in the memory of your GPU - in other words, gpuArray can only access the memory of the GPU device.

MATLAB: Is there a function in Stateflow to determine how a particular “Data Store Memory” data object is being used by a Stateflow chart

The ability to determine how a particular "Data Store Memory" data object is used in a Stateflow chart is not available in Stateflow.

To work around this issue, you can write your own MATLAB file function that uses the Stateflow API to obtain the expressions in a transition, state, or other chart object that indicate how the "Data Store Memory" is being used. As an example, you might use the following commands in the Stateflow API to access expressions in a transition and state:

rt = sfroot;
m = rt.find('-isa', 'Simulink.BlockDiagram', '-and', 'Name','myModel');
chart = m.find('-isa','Stateflow.Chart','-and','Name','mychart');
trans = find(chart, '-isa','Stateflow.Transition'); %Get all transitions
states = find(chart, '-isa','Stateflow.State'); %Get all states
transString = trans(1).LabelString; %Get the expressions in the first transition
statesString = states(1).LabelString; %Get the expressions in the first state

One way to determine if the "Data Store Memory" data object is being read from or written to is to see if it is on the right or left side of an "=" sign. You can determine this by parsing the transString and statesString strings. You can also use the STRFIND command to get the location of the "Data Store Memory" variable and the "=" sign in the expressions contained in transString and statesString strings.

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Related Solutions

MATLAB: For GPU computing, dedicated memory size will be important or not

MATLAB: Is there a function in Stateflow to determine how a particular “Data Store Memory” data object is being used by a Stateflow chart

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