Re: [eigen] EigenLab: C++ run-time matrix math ala MATLAB. |

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*To*: eigen@xxxxxxxxxxxxxxxxxxx*Subject*: Re: [eigen] EigenLab: C++ run-time matrix math ala MATLAB.*From*: Marcel Goldschen <marcel.goldschen@xxxxxxxxx>*Date*: Tue, 2 Sep 2014 12:32:41 -0500*Dkim-signature*: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=mime-version:in-reply-to:references:date:message-id:subject:from:to :content-type; bh=1YRN7TfXVyXxUGChdvekUgrQC3AfTCeYvDuti5MxJLI=; b=Z4blDhw/ixEQCfUrSGTjntTHfsBFI5VH0VaN9Kly9Ix92mk8ib8g9F3RrxJ+fb1c9k o4dk+EQ/RhouNA9ha8zuT8ePV8STzgz/IluJUBqQOuuBEBPuOhggKvUP3PKMRu9k033H WVgRGwBydlRVWlUjS7QT7rJB+BLwVZFf53SKUFXGXzka/SDzsOrjvPm1dPdzDreNFD5Q QaaGrjaFikXMdbXcyYjEPjwodynqodcXAybtkD/KKbntAY3dss7+7E57MTMAf+wC01yH KT7PM7un13zHxZ5DCYVnjfzBQ2qFkCSVx0G94SK6ddXVQMqqOynp5tsYs8QB7XdPR9Xo wiTw==

Thanks Gael. I also thought of hardcoding common sub-expressions, but the list of "common" ones got big quick, so I was hoping for a more elegant solution. Oh well.

Cheers,

Marcel

On Tue, Sep 2, 2014 at 4:35 AM, Gael Guennebaud <gael.guennebaud@xxxxxxxxx> wrote:

Great tool!Without embedding a JIT compiler (e.g., LLVM's one) I don't see how that could be possible. Perhaps, a good tradeoff would be to catch a few very common sub-expressions to map them to a single Eigen's _expression_.On Sun, Aug 31, 2014 at 4:18 PM, Marcel Goldschen <marcel.goldschen@xxxxxxxxx> wrote:

Also, if anyone knows how I could improve its performance by using Eigen's _expression_ templates, I'd love to hear about it.Gael.

Postdoctoral fellow, Chanda laboratory

**References**:**Re: [eigen] EigenLab: C++ run-time matrix math ala MATLAB.***From:*Gael Guennebaud

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