Konrad Malkowski
MathWorks
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I am a C++ Software Engineer on the IAT Foundation Libraries team. My interests include Parallel Computing, Computer Architecture, Operating Systems and C++.
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Contribute at least one answer each month for 3 consecutive months
Awarded to Konrad Malkowski on 20 Jul 2017
Answer 1 question that was unanswered for more than 30 days
Awarded to Konrad Malkowski on 20 Jul 2017
3 of your answers have been accepted
Awarded to Konrad Malkowski on 20 Jul 2017
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Awarded to Konrad Malkowski on 02 Feb 2012
Feeds
Alternatives to break command inside a spmd command
What you will need to implement is a parallel termination detection algorithm. See the following link for references: <htt...
plus de 11 ans il y a | 0
How to compile shrlibsample in R2012a
You can compile the code in two ways: - using gcc - using mex (which uses gcc internally) Here's how I compiled the code us...
plus de 11 ans il y a | 0
need simple example using pmode
Here's an example how to use distributed arrays and how to use SPMD: matlabpool open 2 x = 1:1:100; y = 100...
plus de 11 ans il y a | 1
R2013a + Intel Composer XE 2013 + MSVC 2012 or MSVC 2010. Have you tried them yet?
Hi James, Please take a look at the following page: <http://www.mathworks.com/support/compilers/R2013a/index.html> It a...
plus de 11 ans il y a | 0
Concatenating large matrices - out of memory
Have you tried explicitly storing the matrix as sparse? See <http://www.mathworks.com/help/matlab/ref/sparse.html>
plus de 11 ans il y a | 0
How to concatenate cells?
Does this do what you are looking for? A = repmat([1,2,3,4], 1000, 1); B = repmat([5,6], 1000, 1); C = {A}; D = {B...
plus de 11 ans il y a | 0
Problem running matlab script to background
What type of image are you trying to save? Saving to jpg, png, tiff or eps/ps is usually safer than other file formats when n...
plus de 11 ans il y a | 0
| A accepté
What is the default installation path for Matlab on architecture X?
One possible approach on linux/mac would be: > find / -name matlab This would recursively search the file system for "ma...
plus de 11 ans il y a | 5
How can I increase Memory
A few questions: # What operating system are you using? # Do you close the previously open files? The reason for these qu...
presque 12 ans il y a | 0
Nested for loop to parfor
Are the matrices preallocated, or are they allocated dynamically at run time by the inner for loops? If matrices are not preallo...
plus de 12 ans il y a | 0
parfor - Attempt to serialize data which is too large
There is a 2GB transmission limit between client and workers. Could you provide me with additional values for Np, N1, Nt, etc so...
plus de 12 ans il y a | 2
Application is missing mclmcrrt711.dll.
Hi Owen. Did you create the application, or did you get the executable from someone else? The person who compiled the applic...
plus de 12 ans il y a | 0
Memory spike when using previously declared variable in spmd block
You can build the random vector directly on the workers: spmd c = codistributed.rand(1+2^27, 1); end As for the ...
plus de 12 ans il y a | 3
Way to know status of parfor loop without printing to command window or saving to file?
Why not send the output to the file and diagnostic to the command window? Alternatively there you can take a look at the follow...
plus de 12 ans il y a | 1
Can MATLAB tell me which gpu device is the one connected to the display?
1. Yes there will be limitations on what can run on GPU that is used for rendering. In particular the CUDA kernels cannot run fo...
plus de 12 ans il y a | 0
Slow indexing into local parts of distributed cell arrays in parallel computing toolbox
Hi Anders, The best way of achieving high performance in your example is to operate directly on the LocalParts of the codistr...
plus de 12 ans il y a | 3
| A accepté
Whats the best command to write to file inside parfor loop?
Are you planning on writing data from multiple workers to a single file within PARFOR? If so, then there are no commands that w...
plus de 12 ans il y a | 1
How to have more than 12 workers
Are the processors in the server hyper-threaded? Irrespective of what admin-center reports you can always start more workers ...
plus de 12 ans il y a | 2
Can we use parfor inside a for loop?
If you have multiple nested for loop, then for best performance you really want the parfor to be the outermost loop in your prog...
plus de 12 ans il y a | 1
r2011b remote file mirroring issues (non-shared file system with generic scheduler interface)
No problem :-) That is my background as well :-) Regarding your question. To force these diagnostic messages to print in your...
plus de 12 ans il y a | 0
r2011b remote file mirroring issues (non-shared file system with generic scheduler interface)
Hi Nick, Take a look at the getJobStateFcn.m for your scheduler. Try commenting the code inside of the if ... else block. ...
plus de 12 ans il y a | 1
r2011b remote file mirroring issues (non-shared file system with generic scheduler interface)
Hi Nick, Does the issue occur when you leave your MATLAB on, while the jobs are running on the cluster? How many jobs do y...
plus de 12 ans il y a | 0
FFT inside parfor loop on a multi-core computer does not accelerate
Is your parfor code inside of a function or a script? If it is inside of a script, please convert it to a function call. In gene...
presque 13 ans il y a | 0
CUDA_ERROR_LAUNCH_TIMEOUT
What type of cards do you have? Do you have your user desktop extended to both graphics cards? In general, this error occu...
presque 13 ans il y a | 2
| A accepté
Persistent Variables Not Persistent After Parfor Loops
This is expected behavior. The reason for this is as follows. When you type matlabpool open local 4, you start 4 additional ...
environ 13 ans il y a | 0
Training Neural Networks using GPU computing
Hi Andre, The functionality to train neural networks on GPUs is not supported by MATLAB R2011b.
environ 13 ans il y a | 0
| A accepté
Parallel Matrix Multiplication on a Distributed Computing System
There are two levels of parallelism present in MATLAB: # Implicit Multi-threaded parallelism for certain built-in MATLAB comman...
environ 13 ans il y a | 1
| A accepté
Distributed and parallel computing without DCS
Starting with MATLAB R2010b MATLAB Compiler allows you to compile MATLAB code containing PARFOR and SPMD running on local schedu...
environ 13 ans il y a | 1
indexed list of fit objects?
Have you tried placing the body of the parfor loop into a function? For example, instead of: parfor i = 1:10 y(i) = x(i) *...
plus de 13 ans il y a | 0
Variable in PARFOR
What are you trying to do with Z variable? Do you use it to accumulate some values (reduction variable) across all iterations? O...
plus de 13 ans il y a | 0
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