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# Nathan Zechar

Last seen: 3 dagar ago Active since 2020

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FDTD 3D and 2D Examples - ADE CPML and a Dielectric Region
Examples on how to apply ADE CPML. User can change relative permittivity.

Submitted

FDTD - 1D, 2D, 3D Simple Free Space Examples
Vectorized FDTD code with GPU functionality for the 3D case. Code is nicely organized and easy to understand.

Submitted

3D FDTD using Current Density and ADE PML Boundary
This is an example of exciting a point source in free space and launching EM radiation into a region where plasma exists.

Question

Fastest way to differentiate only the sides of large matricies
I believe I have found one of the fastest ways to differentiate different portions of a large matrix using built in Matlab funct...

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Question

Why is pagemtimes slower than just coding up the matrix multiplication?
I noticed that pagemtimes is slower than just expanding an equation and coding it on both CPU and GPU. But for GPU it is excepti...

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Why is pagemtimes slower on GPU than a CPU?
Hello David, I have a similiar problem and have found that pagemtimes is slower than just expanding an equation and coding it on...

How to multiply higher order matrices?
Here's an example. This is one way of doing it. clear all a = 10; %% Convert 3D matrix to 5D for tensor matrix multiplic...

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Question

How to multiply higher order matrices?
Hello, I am attempting to multiply a 5D 3x3x3x3x3 matrix and a 5D 3x3x3x3x1 matrix in order to produce a 4D matrix of 3x3x3x3 af...

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Question

Large discrepency between CPU and GPU with fftn and ifftn?
Hello, I am using a GPU to compute multipul 3D FFTs. I've come across a problem where the output I am recieving from the GPU FF...

mer än ett år ago | 1 answer | 0

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Question

Parallel Processing with Multipul GPUs - fftn
Hello, I was wondering it is possible to utilize multipul GPUs to perform several ffts in a manner where each individual fft cou...

mer än ett år ago | 1 answer | 1

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Question

How much additional memory is needed to perfrom a 3D FFT other than matrix to be transformed? GPU application.
Hello. I'm trying to gain an understanding of how much memory is needed to perform an FFT, and if it is different with respect t...

mer än ett år ago | 1 answer | 0