Narfi
MathWorks
17 total contributions since 2012Narfi's Badges
1 of your answers has been accepted
Awarded to Narfi on 20 Jul 2017
Provide your first answer ever to someone else's question
Awarded to Narfi on 20 Jul 2017
Solve a problem for the first time
Awarded to Narfi on 27 Jan 2012
Answered
Looping through a 3D matrix
Damith, By including the indices in the variable names, you end up with a lot of places where you need to build up strings fo...
Looping through a 3D matrix
Damith, By including the indices in the variable names, you end up with a lot of places where you need to build up strings fo...
5 years ago | 0
Answered
Freeing GPU memory associated with CUDA kernels
Jeremy, In that case, I am puzzled as to what is going on. I would recommend you contact technical support and try to give t...
Freeing GPU memory associated with CUDA kernels
Jeremy, In that case, I am puzzled as to what is going on. I would recommend you contact technical support and try to give t...
6 years ago | 0
Answered
Using a templated CUDA kernel via MATLAB
Alex, Allow me to quote from the help for parallel.gpu.CUDAKernel and try to parse it for you. If you have suggestions for h...
Using a templated CUDA kernel via MATLAB
Alex, Allow me to quote from the help for parallel.gpu.CUDAKernel and try to parse it for you. If you have suggestions for h...
6 years ago | 0
| accepted
Answered
Freeing GPU memory associated with CUDA kernels
Jeremy, How large is the PTX for the kernels you are loading via the CUDAKernel interface? The CUDAKernel object in MATL...
Freeing GPU memory associated with CUDA kernels
Jeremy, How large is the PTX for the kernels you are loading via the CUDAKernel interface? The CUDAKernel object in MATL...
6 years ago | 0
Answered
How to run arrayfun with a GPU?
Inside arrayfun, one can only perform computations with scalars, so vector and matrix computations are not supported. In partic...
How to run arrayfun with a GPU?
Inside arrayfun, one can only perform computations with scalars, so vector and matrix computations are not supported. In partic...
7 years ago | 2
| accepted
Solved
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 ...
7 years ago
Solved
Select every other element of a vector
Write a function which returns every other element of the vector passed in. That is, it returns the all odd-numbered elements, s...
7 years ago
Solved
Determine if input is odd
Given the input n, return true if n is odd or false if n is even.
7 years ago
Solved
Sort a list of complex numbers based on far they are from the origin.
Given a list of complex numbers z, return a list zSorted such that the numbers that are farthest from the origin (0+0i) appear f...
7 years ago
Solved
Back and Forth Rows
Given a number n, create an n-by-n matrix in which the integers from 1 to n^2 wind back and forth along the rows as shown in the...
7 years ago
Solved
Most nonzero elements in row
Given the matrix a, return the index r of the row with the most nonzero elements. Assume there will always be exactly one row th...
7 years ago
Solved
Find the numeric mean of the prime numbers in a matrix.
There will always be at least one prime in the matrix. Example: Input in = [ 8 3 5 9 ] Output out is 4...
7 years ago
Solved
Find the sum of all the numbers of the input vector
Find the sum of all the numbers of the input vector x. Examples: Input x = [1 2 3 5] Output y is 11 Input x ...
7 years ago
Solved
Find all elements less than 0 or greater than 10 and replace them with NaN
Given an input vector x, find all elements of x less than 0 or greater than 10 and replace them with NaN. Example: Input ...
7 years ago
Solved
Make a checkerboard matrix
Given an integer n, make an n-by-n matrix made up of alternating ones and zeros as shown below. The a(1,1) should be 1. Example...
7 years ago
Solved
Make the vector [1 2 3 4 5 6 7 8 9 10]
In MATLAB, you create a vector by enclosing the elements in square brackets like so: x = [1 2 3 4] Commas are optional, s...
7 years ago