Question

Is there a way to speed up for loop when grouped with GPU?

Hello, At the moment for loop is bottle neck in my code. I know that GPU does not work with indexing and due to for loop all c...

6 mois ago | 0 answers | 0

Question

How to pass data divided to two GPU for parallel calculations?

Hello, I have a group of large *.mat files that are arrays of size Nx130. I would like to load this data and sent it to two GPU...

6 mois ago | 0 answers | 0

Question

How to speed up matrix update zeros by using previous value?

Hello, I am looking for the way to update my matrix zero values by using previous value. For example if c matrix is: 0 1 5 2 3...

10 mois ago | 1 answer | 0

Question

How to readtable filtering columns and rows?

Hello, Maybe someone knows if there is a way to readtable not only defining the column names but defining rows values as well? ...

10 mois ago | 1 answer | 0

Question

How to convert time in nanosecond to numeric value in order to be able to compare these timeseries?

Hello, I have the number of *.csv files that are same structure (same column number), but row numbers are different. I use read...

10 mois ago | 1 answer | 0

Question

How to split time in to hours, minutes and nanoseconds

Hello, I would like to split my timserias in order to convert them to to nanoseconds, what I have so far is: t = ('16:45:00....

10 mois ago | 2 answers | 0

Question

Speed up for loops for arrays

Hello, Maybe someone could help me to speedup this type of for loop? I did try parfor, I did try to think of way using GPU, but...

11 mois ago | 1 answer | 0

Question

How could i convert timestamp to nanosecond and what would be the way to get data in nanoseconds for given period?

Hello, Maybe someone could bring me on the right track. How could I convert the given time stamp to nanoseconds? 20180429,...

11 mois ago | 1 answer | 0

Question

Why multiple GPUs slower than one GPU?

Dear All, On my machine there are 2 GPUs. Why moving data to multiple GPUs in my case is about 5x slower, than working with j...

12 mois ago | 0 answers | 0

Question

Use multiple GPUs for functions

Dear All, I had my previous question, because it was not clear, now I tried to simplify it. At my disposal there are two GPU de...

12 mois ago | 1 answer | 0

Question

Using multiple GPU for functions

Dear All, I have two GPU devices (GeForce GTX 1070 Ti and GeForce GTX 1060 6GB) and I have code that works great with one GPU...

12 mois ago | 0 answers | 0

Question

Divide array in to smaller 3D array

Hello, Maybe someone could help me with the following situation. Lets say I have multiple *.mat files, that contains of arrays ...

environ un an ago | 0 answers | 0

Question

Use only defined 4D array elements

Hello to All, There is 4D array varcov (NxNxZxL), I need to make other 4D array with the following values: varcov1=[varcov...

environ un an ago | 1 answer | 0

Question

Calculate lsqr of two arrays on GPU

Hello, Is there way to calculate lsqr of two arrays, I mean for each columns of arrays respectively. If a (NxM) and b(NxM) ar...

environ un an ago | 1 answer | 0

Question

How to speedup left divide on GPU?

Hello, I have two same size 4D gpuArrays f(NxMxLxK) and f1(NxMxLxK) and I need to left divide each column, for that this code...

environ un an ago | 0 answers | 0

Question

How to left divide 4D arrays

If I have two 2D gpuArrays f(NxM) and f1(NxM) of same size, then I can left divide them like this: beta=arrayfun(@(n) f(:,n...

environ un an ago | 1 answer | 0

Question

Repeat 3D matrix in 4D

Hello, I suppose it is not hard, but I need to repeat 3D matrix a (NxMxL) in to 4D b (NxMxMxL). What I need is to repeat each...

environ un an ago | 1 answer | 0

Question

How to divide array, that result would be like dividing columns?

Hello, Can somebody give a little explanation about matrix division? For example there are two arrays a (100x5) and b (100x5). ...

environ un an ago | 1 answer | 0

Question

Multiply two 3D arrays that result would be 4D

Hello to All, I am trying to work and understand 4D arrays. Lets say I have two 3D gpuArrays a(100x5x5) and b(5x5x5). I would...

environ un an ago | 2 answers | 0

Question

What is the difference when multiplying and dividing 3D gpuArrays compared to 2D?

Hello, I am trying to do some calculations on 3D gpuArrays. Firstly I made my code for 2D arrays, the I did try tomove to 3D....

environ un an ago | 0 answers | 0

Question

Multiply each 3D gpuArray page column with each other

Hello to All, Can anyone give advice on the following matter? Lets say I have 3D gpuArray a (XxYxZ) with random numbers, I need...

environ un an ago | 1 answer | 0

Question

Count conservative occurrences of zeros and if zero appeared for defined number of times it should be changed.

Hello, There is an array A size (NxM), each column represents when a signal was created. I need to close that signal if certa...

environ un an ago | 1 answer | 0

Question

What would be the way to remove duplicates for defined numbers in array?

Hello to All, I am trying to solve the following situation. There is array IN (NxM), size my vary. My input is IN= ...

environ un an ago | 1 answer | 0

Question

How to calculate the number value did appear continuously in column?

Hello Everyone, I have the following code that works fine with vectors. However I can’t figure out how to do the same on arra...

environ un an ago | 0 answers | 0

Question

How to use firs value from array column when threshold and others change to zero, moreover if zero repeated for number of times change that element value?

Hello Everyone, I have the following code, which was provided by @Stephen Cobeldick, that converts array D D= -2 2 3 ...

environ un an ago | 0 answers | 0

Question

How to optimize code for GPU and remove for loops?

Hello, I am trying to optimize this code for GPU in order to speed up calculations. Here is small data sample, but mine data i...

environ un an ago | 0 answers | 0

Question

What would be the way to use one 3D array as index for other 3D array?

Hello, I have two 3D arrays a (3x5x4) and o (1x5x4). What I would like to achieve is to use o array as index for a. The struggl...

environ un an ago | 1 answer | 0

Question

How to create 3D array out of 2D, with one row step without using for loop?

Hello, Lets say I have 2D array x(1100x5), n1=1100,d=501 and w=500. I can create 3D array, with one row step using for loop, ...

environ un an ago | 1 answer | 0

Question

How to change cell arrays to 3D arrays in order to speed up calculations?

Hello, For example I have two cell arrays x {10}(20x5) non integer values and k {10}(5x1) integer values 1:5, and use one cell ...

environ un an ago | 1 answer | 0

Question

How to avoid for loop when indexing?

Hello, I have the following for loop, where pairs(500x10), is there to calculate cc without for loop? for i=1:500 ...

environ un an ago | 1 answer | 0