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Altera_Forum
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10 years ago

Matrix Inverse IP core for Stratix V FPGA

Does the input to the Floating Point Matrix Inverse IP core require a square matrix as its inverse? I want to get a 12x12 inverse using the Cholesky decomposition by inputting a 12x200 matrix. Can this be done with the IP core?

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  • Altera_Forum's avatar
    Altera_Forum
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    10 years ago

    I don't think it is supported, based on the datasheet (https://www.altera.com/content/dam/altera-www/global/en_us/pdfs/literature/ug/ug_altfp_mfug.pdf) for the IP:

    "DIMENSION: The number of rows in the matrix. As the matrix is

    square, this is also the number of columns in the matrix.

    The supported dimensions are 4 x 4, 6 x 6, 8 x 8, 16 x 16,

    32 x 32, and 64 x 64."

    It seems to imply that a square matrix is required. And 200x12 is larger than the 64 maximum anyway.

    Besides, I wasn't aware you can find an inverse for a non-square matrix. Been quite some time since I did matrix stuff in detail, so I could quite easily be wrong on that.