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# Qiu Xu

Last seen: 2 days ago Active since 2021

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How to plot the 2d complex function with amplitude and phase
I have a 2d complex function as follows psi=sqrt(x^2+y^2)*exp(-(x^2+y^2)/16)*exp(i*atan2(y,x)); How to realize the following ...

1 day ago | 1 answer | 0

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Question

How to plot the 2d complex function with amplitude and phase
I have a 2d complex function as follows psi=sqrt(x^2+y^2)*exp(-(x^2+y^2)/16)*exp(i*atan2(y,x)); How to realize the following ...

3 days ago | 0 answers | 0

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Question

How to write the linear equations in the form of matrix
I have a linear equations: -i*c*sqrt((nx+1)*ny)*u_{nx+1,ny-1}+i*c*sqrt(nx*(ny+1))*u_{nx-1,ny+1}=E*u_{nx,ny}, where nx,ny=0,1,2,3...

25 days ago | 1 answer | 0

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Question

multi-dimensional gpu array multiplication
Hi, I am performing the following two GPU calculations: (1) The first problem m=100; n=100; p=1024; A=gpu...

3 months ago | 0 answers | 0

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Question

2D matrix multiply with 3D array
Hi, I have two 2D matrix u and v, and a 3D array B. I want to perform the following calculations, for example u=rand(200,300);...

3 months ago | 1 answer | 0

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Question

using eig to find the eigenvalues and eigenvectors of a large matrix on GPU
Hi, I have matrix A with 7936*7936 dimensions. I use eig to find its eigenvalues and eigenvectors, the command is [vect,eige...

3 months ago | 1 answer | 1