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Accept 20 answers given by other contributors
Awarded to Mantas Vaitonis on 08 Nov 2018
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How multidimensional gpu arrays are stored on GPU and how are they proced when functions are invoked?
Dear All, Could you please help me to better understand how data is passed in GPU when using multidimensional arrays from theor...
etwa 4 Jahre vor | 0 Antworten | 1
0
AntwortenFrage
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...
etwa 5 Jahre vor | 0 Antworten | 0
0
AntwortenFrage
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...
etwa 5 Jahre vor | 0 Antworten | 0
0
AntwortenFrage
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...
mehr als 5 Jahre vor | 1 Antwort | 0
1
AntwortFrage
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? ...
mehr als 5 Jahre vor | 1 Antwort | 1
1
AntwortFrage
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...
mehr als 5 Jahre vor | 1 Antwort | 0
1
AntwortFrage
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....
mehr als 5 Jahre vor | 2 Antworten | 0
2
AntwortenFrage
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...
mehr als 5 Jahre vor | 1 Antwort | 0
1
AntwortFrage
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,...
mehr als 5 Jahre vor | 1 Antwort | 0
1
AntwortFrage
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...
mehr als 5 Jahre vor | 0 Antworten | 0
0
AntwortenFrage
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...
mehr als 5 Jahre vor | 1 Antwort | 0
1
AntwortFrage
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...
mehr als 5 Jahre vor | 0 Antworten | 0
0
AntwortenFrage
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 ...
mehr als 5 Jahre vor | 0 Antworten | 0
0
AntwortenFrage
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...
mehr als 5 Jahre vor | 1 Antwort | 0
1
AntwortFrage
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...
mehr als 5 Jahre vor | 1 Antwort | 0
1
AntwortFrage
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...
mehr als 5 Jahre vor | 1 Antwort | 0
1
AntwortFrage
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...
mehr als 5 Jahre vor | 0 Antworten | 1
0
AntwortenFrage
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...
mehr als 5 Jahre vor | 1 Antwort | 0
1
AntwortFrage
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). ...
fast 6 Jahre vor | 1 Antwort | 0
1
AntwortFrage
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...
fast 6 Jahre vor | 2 Antworten | 0
2
AntwortenFrage
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....
fast 6 Jahre vor | 0 Antworten | 0
0
AntwortenFrage
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...
fast 6 Jahre vor | 1 Antwort | 0
1
AntwortFrage
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...
fast 6 Jahre vor | 1 Antwort | 0
1
AntwortFrage
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= ...
fast 6 Jahre vor | 1 Antwort | 0
1
AntwortFrage
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...
fast 6 Jahre vor | 0 Antworten | 0
0
AntwortenFrage
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 ...
fast 6 Jahre vor | 0 Antworten | 0
0
AntwortenFrage
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...
fast 6 Jahre vor | 0 Antworten | 0
0
AntwortenFrage
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...
fast 6 Jahre vor | 1 Antwort | 0
1
AntwortFrage
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, ...
fast 6 Jahre vor | 1 Antwort | 0
1
AntwortFrage
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 ...
fast 6 Jahre vor | 1 Antwort | 0
1
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