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Feeds
GPU, Interpn and Meshgrid
If you look at the help for gpuArray/interpn in R2014a it shows an example of 4D interpolation. My theory is that your inputs t...
más de 9 años hace | 0
Can I have 8 workers on a quad-core processor?
When determining the default size of the local cluster, MATLAB uses the number of true cores you have (hyperthreading is ignored...
más de 9 años hace | 5
| aceptada
MATLAB R2014a in Ubuntu 14.04 doesn't recognize NVIDIA GeForce GTX770
Yes, it is because you are using the "nouveau" driver. You need to get a compute driver from the <http://www.nvidia.com/Downloa...
más de 9 años hace | 0
| aceptada
Parfor loop variable cannot be classified
The parfor variable classificiation is getting confused by the type of indexing you are performing with the microMovie variable....
más de 9 años hace | 3
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question regarding what is allowed in a parfor loop
This documentation is trying to explain when local variables defined in a parfor loop body are available for use outside the par...
más de 9 años hace | 0
| aceptada
Parfor error with bsxfun
I think that the parfor analysis is getting a bit confused by the multidimensional indexing into var2. If you re-write the code...
casi 10 años hace | 1
| aceptada
classification error: slicing struct for parfor loop
It might help to store parforloopData(i,1) in a temporary variable inside the loop, use the temporary variable everywhere, and t...
casi 10 años hace | 1
| aceptada
Hyperthreading & Number of Cores. Parallel computing toolbox
From the MATLAB desktop Parallel menu, select Create and Manage Clusters (or if you are using MATLAB version R2018a or earlier,...
alrededor de 10 años hace | 10
| aceptada
CPU vs GPU - Is it reasonable?
While I can't comment exactly on the CPU/GPU comparison for your specific setup, I can say that the general rule of thumb in GPU...
alrededor de 10 años hace | 4
| aceptada
Parallelization of matrix definiton
Without more context for your problem I cannot be sure, but you may find using distributed arrays inside an spmd block to be mor...
alrededor de 10 años hace | 1
Error using gpuArray/arrayfun ... Use of functional workspace is not supported.
As of the latest MATLAB release (R2013b) arrayfun on the GPU does not support anonymous functions that have been created using v...
más de 10 años hace | 1
When calling the matlabpool to work in parallel, does each worker work in single-thread mode?
Workers are started up in single-thread mode in order to avoid over-subscribing the machine and negatively impacting performance...
más de 10 años hace | 1
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gpuArray colunwise opertations on matrix ?
It looks like you could set up all the data in one pass. You might try organizing your data such that the matrix to use for c...
más de 10 años hace | 0
Are parallel for loops available on GPUs ?
While there is no general capability to execute for loops directly on the GPU, if all of the operations inside the for loop are ...
más de 10 años hace | 0
| aceptada
Can matlab's parallel computing toolbox lu factorizes a large sparse matrix on GPU
The Parallel Computing Toolbox does not support sparse matrices on the GPU.
más de 10 años hace | 1
Matrix multiply slices of 3d Matricies
If you have MATLAB R2013b, you can use the new gpuArray pagefun function like so: C = pagefun(@mtimes, A, B);
más de 10 años hace | 1
| aceptada
Memory leaks in simple MEX function
There is a known memory leak in R2013a only. If possible, I would apply the patch associated with external bug report 954239 to...
más de 10 años hace | 2
Matrix operations with Parallel Computing Toolbox
A number of MATLAB functions are multithreaded, and matrix multiplication (*) is one of them. This is what you are seeing durin...
casi 11 años hace | 1
Benchmarking A\b on the GPU runs on CPU in parallel?
The CPU portion of this benchmark is multithreaded, so you should see more than one core working during the linear system solve....
casi 11 años hace | 0
Does copying from gpu to host generally take longer than copying from host to gpu?
I think you have arrived at the same conclusion as this blog post on GPU performance. It provides a lot of detail on how to pro...
casi 11 años hace | 1
| aceptada
why code using parallel processing has longer running time than the other?
There is some confusion here regarding distributed arrays, both in the initial post and in the answer by David Sanchez. Distrib...
casi 11 años hace | 0
Can I run mex functions (containing no CUDA code) using arrayfun
You cannot run a Mex function using gpuArray/arrayfun. In fact, this is specified in the help for gpuArray/arrayfun: FUN...
casi 11 años hace | 1
why using gpu.Array.zeros I have error Undefined variable "parallel" or class "parallel.gpu.gpuArray.zeros" ?
What version of MATLAB are you using? In R2010b-R2012a releases, the GPU object was named parallel.gpu.GPUArray. In those ...
alrededor de 11 años hace | 2
| aceptada
1) Why for dense matrices it's not useful to split B? 2) What are the factors that determine the speed up for the sparse case?
I'll have to leave your second question for someone else to answer, as I am not sure of the details. As for your first question...
alrededor de 11 años hace | 2
| aceptada
Is it possible to perform parallel computing with lsqnonlin?
In the latest release (R2013a), lsqnonlin does not support parallel computations. The most up-to-date information on what opt...
alrededor de 11 años hace | 1
| aceptada
Missing USEParallel Parameter from BLOCKPROC function in my matlab
The UseParallel option to blockproc was added in MATLAB version R2011b. That is why you are seeing an "unknown parameter" err...
alrededor de 11 años hace | 0
| aceptada
Need help about how to use gpu in for loop
I do not believe that there is GPU support for the functions you have mentioned from the Signal Processing Toolbox (modulate, de...
alrededor de 11 años hace | 0
Matlab + CUDA slow in solving matrix-vector equation A*x=B
To get accurate timings for GPU calculations you need to be sure to wait for the GPU to finish. You should modify all your timi...
alrededor de 11 años hace | 1
| aceptada
Codistributed arrays taking too long to run
Here is an example of how to properly benchmark an operation on distributed arrays: <http://www.mathworks.com/help/distcomp/e...
alrededor de 11 años hace | 0
| aceptada
When to use codistributed arrays
Distributed arrays are most useful when you do not have enough memory to store an entire array on a single machine. By distribu...
alrededor de 11 años hace | 0
| aceptada
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