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Mikhail


Last seen: 8 meses hace |  Con actividad desde 2014

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Use matrix c\c++ API with row-based indexing
Hi all, in my project I perform some calculations in c++, and then I am using Matrix API (mxCreateNumericArray) to save my 2D ar...

casi 10 años hace | 1 respuesta | 0

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Run CUDA or PTX Code on GPU
Hi all, I have a problem with running CUDA code on GPU. According to <http://www.mathworks.com/help/distcomp/run-cuda-or-ptx-co...

casi 10 años hace | 1 respuesta | 1

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getting string from gui textbox into dsolve
After reading the strings ('Dy=x^2' , 'y(1)=1' , 'x') you should convert everything into cell array ( <http://www.mathworks.com/...

alrededor de 10 años hace | 0

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creating a matrix of zeros of size of another matrice
So zeros(a1,a2) creates a matrix of zeros with a1 rows and a2 columns, for example: a=zeros(2,3) is a=0 0 0...

alrededor de 10 años hace | 1

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GPU arrayfun with shared arrays
You can try to use your function without arrayfun. If at least 1 of the arguments is on GPU, calculations will be performed on G...

alrededor de 10 años hace | 0

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How to get diffraction pattern (fft2) from image of double slit(jpeg image)
After you get grayscale (2D array) Image, in order to get binary image you can use <http://www.mathworks.com/help/images/ref/im...

alrededor de 10 años hace | 0

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How to find only negative root of any polynomial
If you have symbolic math toolbox, function <http://www.mathworks.com/help/symbolic/vpasolve.html vpasolve> will find all roots...

alrededor de 10 años hace | 0

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I want to read audio data from a file. Can anybody help me?
You didn't set here the name of your file, it should be something like "test.wav"

alrededor de 10 años hace | 0

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how do i plot a graph in xy-plane?
First, you should define everything: h = 6.25 * 10^(-34); x=1:100; y=h.*x; Plot(x,y) So here you fi...

alrededor de 10 años hace | 0

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How to find slope for each pixel?
As i understood, you need to find b=S/A in each point, so you need to use term-by-term division: b=S./A;

alrededor de 10 años hace | 0

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How to get the correct value from the given matrix?
The simplest way is to write b=a(1,:)

alrededor de 10 años hace | 0

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two dimension array mean and deviation calculation
There are a lot of ways to do that. I would generate 3D array, where the third dimension will be of the size = # of rounds (5); ...

alrededor de 10 años hace | 1

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Pregunta


GPU amount of availible shared memory is less that it is seemed to be
Hi all, I am just started to use GPU. So, I tried to compute example from http://www.mathworks.com/products/parallel-computing...

alrededor de 10 años hace | 1 respuesta | 0

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Join some matrices to one matrix
new=[]; for i=1:n % n - number of cells new=[new;m{i}(:)] end %%% So we take each m{i}, turn it into 1...

alrededor de 10 años hace | 1

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Pregunta


error with arrayfun and GPU computing part 2.
I am tring to compute simple example on GPU: function C=myf(A,B,N) for i=1:N C(:,:,i)=(A(:,:,i)*B)^10; ...

alrededor de 10 años hace | 1 respuesta | 0

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GPU computation error: please help
GOt it, just another commands in 2012 version.

alrededor de 10 años hace | 0

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Pregunta


GPU computation error: please help
HI all, I want to use GPU in my research. I downloaded simple example from mathworks (code is attached). Basically, code is: ...

alrededor de 10 años hace | 1 respuesta | 0

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Pregunta


Why vectorized calculations are faster than for loops?
Why it's faster in Matlab? Is it because better memory treating, or paralleling? If this is only due parallel computation, on s...

alrededor de 10 años hace | 1 respuesta | 0

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parfor calculations take longer time than for
I am starting to work with the Parallel Computing Toolbox, and just constructed simple example to compare for and parfor: t...

alrededor de 10 años hace | 1 respuesta | 0

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writing a loop for differences of random numbers.
%Generate: for i= 1:1000 b(i) =rand; end %Subtract: c=zeros(1000,1000) for i =1:1000 c(i,:)=b-b(i); end ...

alrededor de 10 años hace | 0

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Solving System of 5 ODEs using ODE45
You can always get two first order ODE from one second order: if you have 2nd order ODE for y(t), use y1=y(t), y2=y'(t)=dy/dt...

alrededor de 10 años hace | 0

Resuelto


Reverse the vector
Reverse the vector elements. Example: Input x = [1,2,3,4,5,6,7,8,9] Output y = [9,8,7,6,5,4,3,2,1]

alrededor de 10 años hace

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Weighted average
Given two lists of numbers, determine the weighted average. Example [1 2 3] and [10 15 20] should result in 33.333...

alrededor de 10 años hace

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Make a run-length companion vector
Given a vector x, return a vector r that indicates the run length of any value in x. Each element in r shows how many times the ...

alrededor de 10 años hace

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Flag largest magnitude swings as they occur
You have a phenomenon that produces strictly positive or negative results. delta = [1 -3 4 2 -1 6 -2 -7]; Marching thr...

alrededor de 10 años hace

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Given a window, how many subsets of a vector sum positive
Given a vector: [1 0 -1 3 2 -3 1] and a window of 2, A sliding window would find: 1 + 0 = 1 0 - 1 = -1 ...

alrededor de 10 años hace

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Pizza!
Given a circular pizza with radius _z_ and thickness _a_, return the pizza's volume. [ _z_ is first input argument.] Non-scor...

alrededor de 10 años hace

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Column Removal
Remove the nth column from input matrix A and return the resulting matrix in output B. So if A = [1 2 3; 4 5 6]; and ...

alrededor de 10 años hace

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Is my wife right?
Regardless of input, output the string 'yes'.

alrededor de 10 años hace

Resuelto


Sum all integers from 1 to 2^n
Given the number x, y must be the summation of all integers from 1 to 2^x. For instance if x=2 then y must be 1+2+3+4=10.

alrededor de 10 años hace

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