libfreevec

We tackle the 4x4 matrix inversion using the matrix partitioning method, as described in the "Numerical Recipes in C" book (2nd ed., though I guess it will be similar in the 3rd edition). Using the AltiVec SIMD unit, we achieve almost 300% increase ... [More] in performance, making the routine the fastest -at least known to us, matrix inversion method! read more [Less]

We tackle the 4x4 matrix inversion using the matrix partitioning method, as described in the "Numerical Recipes in C" book (2nd ed., though I guess it will be similar in the 3rd edition). Using the AltiVec SIMD unit, we achieve almost 300% increase ... [More] in performance, making the routine the fastest -at least known to us, matrix inversion method! read more [Less]

After a little search I did on Google to find how to detect AltiVec runtime in Linux (I used keywords such as runtime altivec detection and similar), I found that there is no single nice article anywhere that describes something so simple. ... [More] Thankfully, I got a few good answers from benh and dwmw2 in #mklinux/FreeNode, and I decided to put these down in a cleaned up form. read more [Less]

After a little search I did on Google to find how to detect AltiVec runtime in Linux (I used keywords such as runtime altivec detection and similar), I found that there is no single nice article anywhere that describes something so simple. ... [More] Thankfully, I got a few good answers from benh and dwmw2 in #mklinux/FreeNode, and I decided to put these down in a cleaned up form. read more [Less]

read more

read more

read more

read more

read more

The nice thing about the identity matrix, is that we don't have to do any reading of the matrix. And since the form of the identity matrix is already known: SIMD: AltiVecMatrixIdentity