Is this normal performance for matlab?

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Anton 2013-3-24

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https://ww2.mathworks.cn/matlabcentral/answers/68421-is-this-normal-performance-for-matlab

I am trying to plot a surface plot from a 10000x10000 matrix, however i am running into difficulties as far as performance is concerned.

Running on t6500 2.1 dual core cpu (core 2 duo) ,4gb of ram and 4gb of swap. gpu-4570 amd. running on 64 bit linux.

For testing purposes i created a random matrix and attempted to plot it as a surface plot:

R = sprand(10000,10000,0.3);

surf(R )

However i very quickly (matter of seconds) ran out of memory, after about 2 minutes ram usage was 98%, swap 100% and still no plot... Reducing to 1000x1000 matrix plots in about 3 seconds.

Is this due to my system being too slow or is it something i am doing wrong?

Thanks

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采纳的回答

per isakson 2013-3-24

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编辑：per isakson 2013-3-27

在 MATLAB Online 中打开

With R2012a,64bit,Win7,8GB

    R = sprand( 1000, 1000, 0.3 );
    surf( R )

crashes my Matlab. Are you sure surf is supposed to take a sparse matrix?

[Added 2013-03-27]

I repeated the experiment with the three different Renderers. First a copy from the "command history"

    %-- 2013-03-27 11:12 --%
    set(gcf,'renderer','zbuffer')
    R = sprand( 1000, 1000, 0.3 );
    surf( R )
    set(gcf,'renderer','opengl')
    surf( R )
    %-- 2013-03-27 11:25 --%
    set(gcf,'renderer','painters')
    R = sprand( 1000, 1000, 0.3 );
    surf( R )
    %-- 2013-03-27 11:35 --%

with zbuffer surf( R ) worked fine
with opengl Matlab crashed directly
with painters surf( R ) had not displayed any result after some minutes. Cntrl+C made Matlab quit.

Restart of Matlab. Which Renderer is default?

    >> get( gcf, 'renderer' )
    ans =
    None
    >> get( gcf, 'renderermode' )
    ans =
    auto
    >> opengl info    
    Version = 3.2.0
    Vendor = NVIDIA Corporation
    Renderer = Quadro NVS 420/PCI/SSE2
    ...