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I have got a Tesla K20, but the number of GPU cores of the card computed in matlab is wrong !
If you check the appropriate section in the <http://docs.nvidia.com/cuda/cuda-c-programming-guide/index.html#compute-capability-...

13 years ago | 2

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Job submission with Matlab Parallel Computing: Error message
That error message is because you've asked to execute 'TestParfor.m'. If you toe exactly that in MATLAB (including the '.m'), yo...

13 years ago | 1

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Slice rolling window array in parfor
In this case, I think the warning is probably inevitable, and harmless, since the iterations of your loop need to use overlappin...

13 years ago | 0

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How do I implement Parfor loop with nested for loops?
While you and I can clearly see that each simulation and access into 'data' is independent, unfortunately PARFOR doesn't underst...

13 years ago | 2

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false conditional still executed inside parfor
The PARFOR machinery recognises arg2 as a sliced input variable to the loop, and sends the slices off to the workers - it cannot...

13 years ago | 0

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Why is my laptop faster than the Amazon Cloud?
Remember that all MDCS workers run in single computational thread mode. This means that where functions are intrinsically multi-...

13 years ago | 1

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parallel processing time problem
Firstly, you should note that only the outermost PARFOR has any effect. All the available parallelism is used there, so the inne...

13 years ago | 0

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Parfor indexing problem (Subscripted assignment dimension mismatch)
Firstly, I think your PARFOR loop bounds are suspicious - you calculate 'len' as the number of columns in 'phase', but then use ...

13 years ago | 1

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Indexing error using the 'parfor' command
When slicing an output variable, PARFOR requires that you always use the same indexing expression. It should work to do: de...

13 years ago | 1

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Parallel ODE solve using parfor-loop
The problem is that PARFOR doesn't know how to 'slice' your variables T and X because the indexing expression you're using is to...

13 years ago | 1

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error with parfor and big matrices
Please note that this problem is fixed in R2013a.

13 years ago | 0

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GPU for Simulink Execution?
You cannot run arbitrary MATLAB code on the GPU, only those things supported by the gpuArray. See <http://www.mathworks.com/help...

13 years ago | 0

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Decreasing Computational Time with Parfor and variable slicing
It looks as though each iteration of your PARFOR loop accesses every element of "tfidfn", so you cannot slice it. Even if "tfidf...

13 years ago | 0

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matlab struct to gpuArray
You cannot make a structure on the gpu, but you can make a structure containing gpuArrays. s.a = gpuArray(1) s.b = gpuAr...

13 years ago | 2

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Parallel computing (parfor) or various GUI?
Parallel Computing Toolbox workers aren't able to display graphics, so you cannot use them to display GUIs directly from the wor...

13 years ago | 0

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How to slice the nested for loop to divide up the work for cluster/multi-core processors?
That PARFOR loop does work, although as you observe 'V' is not currently sliced. Whether or not you can do much to the structure...

13 years ago | 0

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use of parfor in matlab for a lattice boltzmann code
Is there any reason you can't use vectorization here? f = f .* (1-omega) + omega .* feq;

13 years ago | 0

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parfor indexing and order
PARFOR loops can run in parallel, and as such, the iterations might run in any order. You should not rely on this order. In part...

13 years ago | 0

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Parfor error: parfor variable is indexed in different ways
Your variable 'B' has two different lists of subscripts - to run in PARFOR, you need to provide _precisely_ the same list of sub...

13 years ago | 0

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Answered
Max Matrix Size for GPU Acceleration
The gpuArray support in Parallel Computing Toolbox cannot support arrays larger than the physical memory of your GPU, so you wil...

13 years ago | 1

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Effective GPU Bandwidth Nvidia Quadro 6000
Your experiment there is measuring the transfer bandwidth across the PCI bus, not the device global memory bandwidth. The PCI bu...

13 years ago | 1

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How do I perform muliple FFTs on a stack of data in parallel on a GPU?
FFT2 in MATLAB already applies to each 'page' of a 3-dimensional array, and this is true on the GPU too. Unfortunately, FFTSHIFT...

13 years ago | 1

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use of cell arrays to store matrices... but parfor gives an error
Try: mat_array = cell(3,50); parfor i = 1:50 [a,b,c] = matrixgenerator(~); mat_array(:,i) = {a,b,c}; end ...

13 years ago | 3

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CUDA_ERROR_UNKNOWN When Using a CUDAKernel
That warning means you are using 64-bit pointer types on the GPU, whereas the 32-bit host application is using 32-bit pointer ty...

13 years ago | 3

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loading .mat files with gpuArray's onto computer without a GPU
Unfortunately, there is no other workaround.

13 years ago | 2

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How can i classified the variable inside of the parfor loop?
The problem is that you're building e.g. dompolr in a loop which the PARFOR machinery cannot understand. Your code currently loo...

13 years ago | 1

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How do I set up a parallel configuration on R2010a where the cluster I wish to use is working on R2012a?
Unfortunately, it is not possible to mix releases of Parallel Computing Toolbox and MATLAB Distributed Computing Server in this ...

13 years ago | 2

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How to release/unselect GPU device?
Unfortunately, your observation is correct that in R2011a, there is no way to deselect all GPU devices. In later releases, o...

13 years ago | 1

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Help! "Parfor" error: Subscripted assignment dimension mismatch
In the body of your loop, you create V as 1-by-14, but you assign into it using "V(i,1)" etc. Finally, you assign into "SANatura...

13 years ago | 1

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Answered
Best read-only data strategy for parfor
I would recommend trying my <http://www.mathworks.com/matlabcentral/fileexchange/31972-worker-object-wrapper Worker Object Wrapp...

13 years ago | 2