Joss Knight
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Contribute at least one answer each month for 36 consecutive months
Awarded to Joss Knight on 03 Aug 2018
100 of your answers have been accepted
Awarded to Joss Knight on 19 May 2018
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Content Feed
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...
13 days ago | 0
How much can a graphics card make a difference in neural networks?
Yes, it could make things run 10x faster maybe.
16 days 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...
16 days 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...
1 month 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 ...
1 month ago | 0
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Is R2021a configured to automatically use Apple M1 chip for GPU and Neural Engine?
No. MATLAB only supports NVIDIA GPUs for computation.
2 months 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...
2 months 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...
3 months ago | 0
Cellarray in a dlarray
dlCell = cellfun(@dlarray, myCell, 'UniformOutput', false);
3 months 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.
4 months 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...
4 months 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...
4 months 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 ...
4 months 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...
4 months 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...
4 months 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...
4 months ago | 2
How to plot heatmap using gpuArray?
Sorry, scatteredInterpolant doesn't support gpuArray.
4 months 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...
5 months 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...
5 months ago | 4
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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...
5 months ago | 1
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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...
5 months 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(...
5 months 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...
5 months ago | 0
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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...
5 months ago | 0
How can we train using gpu instead of cpu ?
By default your GPU will be used if you have one. To force it, set the ExecutionEnvironment training option to 'gpu'.
5 months ago | 0
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mexcuda in ubuntu error
Your declaration const mwSize dims[] = {numCRows,numCCols,batch_count}; Is casting away the signed-ness of your variable numCR...
5 months ago | 0
Inconsistent results when using a Cuda Kernel in Matlab
You are overwriting the contents of wReal and wImag inside your kernel, but every thread with the same x grid position is readin...
5 months ago | 0
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Could I use the `mxGPUArray` format data in the cuda kernel function?
No. You have to get the GPU data pointer using the mxGPUGetData function.
6 months ago | 0
How `gpuArray` save sparse matrix when running Preconditioned conjugated gradient?
gpuArray currently stores sparse matrices internally in CSR format. This matches the NVIDIA cusparse routines that are used for ...
6 months ago | 1
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