Joss Knight
MathWorks
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Contribute at least one answer each month for 36 consecutive months
Awarded to Joss Knight on 03 Aug 2018
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Content Feed
From CPU code to GPU
You need to vectorize your code. The GPU is not intended for performing this kind of looping series of operations on scalar vari...
3 dagen ago | 0
I have a problem about " out of memory" for running VGG16 for image classification
It doesn't look as though you're setting the MiniBatchSize on the call to activations which means it's using the default value o...
3 dagen ago | 0
Error using gpuArray/subsasgn An unexpected error occurred during CUDA execution. The CUDA error was: CUDA_ERROR_LAUNCH_FAILED
What version of MATLAB are you using, what GPU and what platform? This sounds like a problem seen before with workstation 'Slee...
3 dagen ago | 0
predict fucntion in deep learning toolbox does not use gpu
That is the documentation for DAGNetwork, not dlnetwork. dlnetwork does not have an ExecutionEnvironment, it chooses its environ...
ongeveer een maand ago | 0
What algorithm does matlab use when solving linear system A\b on GPU?
The same as for the CPU, MATLAB uses LU with pivoting for general square matrices and QR for general rectangular matrices. Perfo...
ongeveer een maand ago | 0
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How to use lsqr with GPU?
solution = lsqr(@afun,gpuArray(b)); Or alternatively, move the data to the GPU inside your afun operation. The problem is, usin...
ongeveer 2 maanden ago | 0
Compatibility Matlab & GPU coder Compute Capability 8.6 RTX 3070
Regarding the gpuBench results: no, MATLAB is definitely not only using half the cores! What you are seeing is the raw performan...
ongeveer 2 maanden ago | 0
How much can a graphics card make a difference in neural networks?
Yes, it could make things run 10x faster maybe.
2 maanden ago | 0
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Can MATLAB ResNet50 be run on Google Colab Pro?
I'm not sure how in-guidelines it is to be asking about running Octave as a substitute for MATLAB on this forum! I'm pretty sure...
2 maanden ago | 1
BiCGStab is slower on R2021a using GPUs
There is a MATLAB bug report on this known issue: https://www.mathworks.com/support/bugreports/details/2438221 You should make...
3 maanden ago | 0
Optimization of loops with deep learning functions
dlconv is designed to work in batch with multiple input channels, multiple filters, and multiple input observations in a single ...
3 maanden ago | 0
| accepted
Is R2021a configured to automatically use Apple M1 chip for GPU and Neural Engine?
No. MATLAB only supports NVIDIA GPUs for computation.
4 maanden ago | 1
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Why is pagemtimes slower on GPU than a CPU?
This might be simply because you are running double-precision math on a device designed for single precision operations. gpuBenc...
4 maanden ago | 0
Problems in defining a custom Neural network layer
Your custom layer doesn't work for input sequences, and it needs to. So the particular error that is happening (which you can se...
5 maanden ago | 0
Cellarray in a dlarray
dlCell = cellfun(@dlarray, myCell, 'UniformOutput', false);
5 maanden ago | 0
MATLAB : find a way with GPU NVIDIA to inverse quickly a large matrix of symbolic variables
Sorry, but Symbolic Math in MATLAB does not have GPU support.
5 maanden ago | 1
Which version of MATLAB will provide functional (i.e. working) GUI interactions?
You made a pre-emptive request that any response not be evasive and I wanted to make an attempt to answer your original question...
5 maanden ago | 1
NVIDIA QUADRO CUDA® Toolkit Version
MATLAB R2021a supports all NVIDIA GPUs as of this date, so feel free to get any card you want! The fastest Quadro I know of righ...
5 maanden ago | 0
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Parallel Computing Toolbox (parfor slower than for, GPU slower than CPU)
1) CPU/parfor: How can I measure the time transfer when doing parfor (since parfor is slower than for when calling to a part of ...
5 maanden ago | 0
GPU Coder vs. ONNXRuntime, is there a difference in inference speed?
You can compile your network for TensorRT using GPU Coder if that's your intended target, no need to go through ONNX. I don't b...
6 maanden ago | 0
Why is my code running slower on the GPU?
Increasing the batch size alone cannot improve convergence in a simple MLP, you need to match it with an increase to the learnin...
6 maanden ago | 0
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Can I tell Matlab not to use contiguous memory?
You might want to ask yourself why you need so many variables in your workspace at once and whether you couldn't make better use...
6 maanden ago | 2
How to plot heatmap using gpuArray?
Sorry, scatteredInterpolant doesn't support gpuArray.
6 maanden ago | 0
Can I hold 2 batches of dlnetwork gradients and update network parameters in 1 operation?
Yes, absolutely, just sum the gradients until your batch size is the size you want, then update the model. The principle is exac...
6 maanden ago | 0
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Unexpected error calling cuDNN: CUDNN_STATUS_BAD_PARAM.
After some investigation (see thread below), this problem seems to be limited to RTX 3080 and 3070 and Linux. It can be worked a...
6 maanden ago | 4
| accepted
Image being labelled something else than in database
You have called classify using the variable net. But the network you trained is called netTransfer. %Train the network that con...
6 maanden ago | 1
| accepted
How to print in cuda kernel when writing mex files
For convenience, printf is redirected by mex.h so that output will appear in the command window. You can use printf, but you sho...
6 maanden ago | 0
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For indexing in gpuArray, how can I improve my code?
Firstly, use pdist2. Secondly, say no to loops: Y = reshape(obj.x_train',1,[],num_train); delta = X-Y; dists = squeeze(sqrt(...
6 maanden ago | 0
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Why doesn't my CNN fit into the memory of the GPU?
VGG16 is a 1GB model, if you inflate it to 3-D you're going to have very serious memory pressure. More to the point, the error y...
6 maanden ago | 0
| accepted
large training dataset leads to error "out of memory. Type "help memory" for your options. caused by: out of memory. Type "help memory " for your options".
Have you followed the following advice from the example?: "The images in the CamVid data set are 720 by 960 in size. Image size...
6 maanden ago | 0
