Answered
Debugging parfor
Firstly, there should be few differences between running your code containing PARFOR with MATLABPOOL closed and with MATLABPOOL ...

15 years ago | 0

Answered
Cannot execute matlabpool close on the labs.
You can nest a PARFOR loop invoke another PARFOR loop, but you will not get any additional parallelism. (due to a current limita...

15 years ago | 1

Answered
very simple cuda ptx code memory speed
To answer your questions: # You're a factor of 2 out in your bandwidth calculation because you need to consider that the data...

15 years ago | 1

| accepted

Answered
Executing CUDA or PTX Code on the GPU
I'm not quite sure why that's failing, but you may be able to work around that by constructing the kernel like so: k = para...

15 years ago | 1

Answered
numerical instabilites for GPU results
I've just run this using R2011a on Linux and Windows using C1060 cards, and in each case the final "norm" calculation gives a re...

15 years ago | 2

Answered
PTX kernel time to run
Firstly, can I suggest that if possible you should upgrade to R2011a as we have made quite a few performance improvements in tha...

15 years ago | 0

| accepted

Answered
Running multiple jobs
With Parallel Computing Toolbox, the "local scheduler" allows you to run a MATLABPOOL up to size 8. If you wish to exceed this, ...

15 years ago | 0

| accepted

Answered
GPU CUDA kernel malloc error
You can get that error message if you have a mismatch between the CUDA runtime in use by Parallel Computing Toolbox and the vers...

15 years ago | 2

| accepted

Answered
BREAK in a PARFOR loop + processing time example to compare it with a FOR loop.
Further to what Raymond has pointed out, PARFOR doesn't support the concept of early return (other than through throwing an erro...

15 years ago | 2

Answered
How can I download Parallel computing toolbox
You need to purchase Parallel Computing Toolbox from MathWorks. You can contact product sales here: <http://www.mathworks.com/co...

15 years ago | 1

Answered
undefined function or varialbe 'gpuArrray' in (R2010b) Service Pack 1
Do you have Parallel Computing Toolbox installed? "gpuArray" and the remainder of the GPU support is part of that toolbox. See: ...

15 years ago | 1

Answered
Matlabpool Error
Have you tried validating the configuration? See here: http://www.mathworks.com/help/toolbox/distcomp/f5-16141.html#brrzq8d-1 fo...

15 years ago | 1

Answered
How to build a table inside a parfor loop
PARFOR is designed for "embarassingly parallel" problems where each iteration of the loop is independent. Unfortunately, the pro...

15 years ago | 2

Answered
How to run fmincon on a cluster?
How are you running the code on a cluster? It looks like you may be running "matlab -nojvm" on the cluster - as the error messag...

15 years ago | 4

Answered
Two tesla c2050 + quadro 600 - GPU error. Ideas ?
That error code usually indicates that CUDA is having a problem connecting to the device. Are you connecting to the remote machi...

15 years ago | 3

| accepted

Answered
Parallel Simulation
I assume that your "entity generator" block references the value of "n". To get this to work, you need to give the model access ...

15 years ago | 4

| accepted

Answered
Why do some calculations like the FFT produce different results when performed on a GPU?
Walter is quite right that any change to the order of operations changes the result. In the case of FFT on the GPU, we use NVIDI...

15 years ago | 7

Answered
Run MATLAB faster using GPU (Intel) in Mac Pro
The system requirements for Parallel Computing Toolbox are described <http://www.mathworks.com/products/parallel-computing/requi...

15 years ago | 7

| accepted

Answered
GPU Computing
Unfortunately, that GPU is compute capability 1.2, and Parallel Computing Toolbox requires GPUs with compute capability 1.3 and ...

15 years ago | 11

| accepted

Answered
Usage of parfor (parallel computing)
Walter is quite right to suggest the local array approach. Just to expand what he described: trials = 30; data = zeros(trials...

15 years ago | 4