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Joss Knight

MathWorks

Last seen: 2 Tage vor Aktiv seit 2013

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Although I cannot be contacted directly, if you would like to ask me a question all you have to do is mention "GPU" somewhere in your MATLAB Answers question.

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Beantwortet
Matab is very slow in processing figures: might it be caused by NVidia Optimus?
Check your laptop's power settings and make sure they are in 'best performance' mode.

7 Tage vor | 0

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Beantwortet
Which is the difference between 'multi-gpu' and 'parallel-gpu' in 'trainingOption' function of the DeepLearning Toolbox?
The purpose of 'multi-gpu' is effectively to try to ensure you are using a local pool with numGpus workers, rather than needing ...

9 Tage vor | 1

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MATLAB does not detect NVIDIA T400 GPU despite updated drivers
The 516 driver is too old for R2024a, which is on CUDA 12.2. Download the recommended 552 driver for your T400 from https://www....

9 Tage vor | 0

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MATLAB GPU UBUNTU 20.04 compatibility CUDA driver
Try the 555 and 550 drivers recommended for your device available from https://www.nvidia.com/en-gb/drivers/, rather than relyin...

9 Tage vor | 0

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Memory leak occurring when repeatedly performing matrix left division on GPU
Thank you very much for reporting this. This appears to be a bug in MATLAB's gpuArray support for overdetermined solves. For now...

etwa ein Monat vor | 0

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Beantwortet
How do I use multiple inputs in mexcuda?
You have passed in two inputs but you have a check if (nrhs!=1), so you are erroring because you don't have one input. You need ...

2 Monate vor | 1

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Why training stops showing error (out of memory) during implementing transfer learning with pre-trained network despite having a laptop of well configuration?
You have a very small GPU I'm afraid. You need to lower your |MiniBatchSize| until it works. Also, set your |ExecutionEnvironmen...

2 Monate vor | 1

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Parallel Processing is better than buying another MATLAB licence?
There may be a misunderstanding here. Your typical license is to a user or a computer. That user, or that computer, can open as ...

2 Monate vor | 0

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I can`t solve out this problem, there is always Output argument "varargout{2}" (and possibly others) not assigned a value in the execution with "dlarray/dlgradient" function.
Your mistake is |dlfeval(@dlgradient,...)|. You need to put your code that computes the loss and the loss gradients into a funct...

2 Monate vor | 0

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AlexNet (filter groups) cannot be well resolved inside dlfeval (dimension mismatch error)
Sorry about this. This is because you have an old version of alexnet (although yes, it shouldn't error). For now, please get you...

2 Monate vor | 0

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Beantwortet
arrayfun vs loops again
I wish it were a cleverer answer, but I'm afraid that it's simply that MATLAB has been heavily optimized for |for| loops over th...

2 Monate vor | 3

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Extreme memory usage when using gather
As others have worked out, it looks like the issue is the indexed assignment into u: u(TERRAIN:end,m) = abs(gather(head(ffield,...

3 Monate vor | 0

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Beantwortet
How can i fix the error mismatch format when convert multiplication layer from LayerGraph to dlnetwork in prune and quantize network example
For one solution, replace the fully connected layers with convolution layers with filters the size of the input and num filters ...

3 Monate vor | 0

Beantwortet
How can i fix the error mismatch format when convert multiplication layer from LayerGraph to dlnetwork in prune and quantize network example
That's an annoying limitation which is hopefully fixed in current releases. Is there any particular reason why you can't use |mu...

3 Monate vor | 0

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Arrayfun/gpuArray CUDA kernel need to be able to remember previous steps
This is a bit too vague to answer. Without indexing, how can each subproblem retrieve its subset of the data? If you just mean i...

3 Monate vor | 0

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Loop through list of vectors (ie, the rows of a matrix), applying same "simple" function to each one, on GPU? Should I use arrayfun somehow?
If your calculation is truly sequential then by definition you cannot parallelize along the sequence. But it sounds like you def...

3 Monate vor | 0

Beantwortet
Parallel Computing in C when using Matlab Coder (parpool and gpuArray)
GPU Coder will generate CUDA code for you. It can even automatically vectorize |for| loops. For a multithreaded parallel for loo...

5 Monate vor | 1

Beantwortet
Can parfor run a series of GPU programs simultaneously?
It looks like you just have a bug in your CUDAKernel implementation, probably accessing unallocated memory. This is putting the ...

6 Monate vor | 0

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error of GPU, net = trainNetwork(datastore, lgraph, options);
You are using your display GPU for computation and it does not have enough capacity. Try disabling all hardware acceleration for...

6 Monate vor | 1

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Beantwortet
How to train a sequence to classification network on GPU
This performance discrepancy is normal. Small sequence networks often cannot benefit from GPU parallelism, especially if they us...

6 Monate vor | 0

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gpuArray large sparse arrays. Error codes: "CUSPARSE_INTERNAL_ERROR" / "UNKNOWN_ERROR"
Hi Joseph. It's hard to be definitive. There were some problems with cusparse and also Windows drivers when supporting the newes...

6 Monate vor | 0

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NVIDIA A2 performance in Matlab R2023b is lousy
The A2's spec says its double precision performance is 140 GFLOPS vs the V100's 7 TFLOPS, so this is pretty much expected. Even ...

8 Monate vor | 3

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Is there a utility like nvidia-smi within matlab to determine which gpus are in current use?
gpuDeviceTable is the utility for listing your devices and their properties. You can also see all your devices in the Parallel m...

9 Monate vor | 0

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Optimizing distance calculation between vectors and pixels
I feel like I haven't fully understood what you're after here, but |pdist2| is the function you're supposed to use to compute di...

9 Monate vor | 0

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The value of 'ValidationData' is invalid. Duplicate table variable name: 'input'. error during neural network training
augmentedImageDatastore returns a table so cannot be trivially combined. You should first transform it to convert it into a cell...

9 Monate vor | 0

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Beantwortet
How to apply a 2D matrix input to a trainNetwork?
Consult the documentation here. Typically sequence data is passed in as a cell array. In each cell you would be passing one seq...

10 Monate vor | 0

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I would like to train a smallish network using cpu cores in parallel rather than gpu as they are slower.
setenv CUDA_VISIBLE_DEVICES -1 when you first start MATLAB, assuming you are running everything locally. However, as a general...

10 Monate vor | 0

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Faster three dimensional higher order interpolation?
Thanks for the request, it will help us prioritise future work. In the meantime, it is possible to write your own interpolation ...

10 Monate vor | 0

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How to solve "Unexpected error calling cuDNN: CUDNN_STATUS_EXECUTION_FAILED." error?
The Ada GPU architecture is not supported in R2018b. You need to upgrade MATLAB. You should have received a warning about this w...

11 Monate vor | 0

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Beantwortet
Will self-written exe application run on GPU on other PC?
Yes, if your other PC has a supported GPU your application will run on it. Isn't MATLAB great?!

11 Monate vor | 0

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