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I'm having a difficult time understanding the difference between the linear algebra packages MAGMA and PLASMA from just a quick glance. It looks like MAGMA is oriented towards GPU's and vector coprocessors, while PLASMA is oriented towards a vanilla multicore system. But I'd appreciate an explanation comparing them, and what they do differently from BLAS/LAPACK/ScaLAPACK.

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Why did you use a comment instead of submitting an answer below? –  cjordan1 Nov 28 '12 at 3:48
    
I emailed the PLASMA/MAGMA developers, and their current preference is that questions about the distributions be directed to their forums: MAGMA ,PLASMA, LAPACK. –  Aron Ahmadia Nov 28 '12 at 16:54
    
Or they could just add a simple blurb on each of the websites so people aren't tempted to ask their favorite, easily searchable computational scientist forum instead. –  cjordan1 Nov 28 '12 at 18:35
    
Well, you know what my opinion on that would be :) –  Aron Ahmadia Nov 28 '12 at 21:55

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See here or the PLASMA README. LAPACK is serial and parallelism enters only via multi threaded BLAS3. ScaLAPACK is for distributed memory machines and requires BLACS/MPI. PLASMA targets shared memory parallelism on multicore machines.

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