How to vectorize with gcc?
The v4 series of the gcc compiler can automatically vectorize loops using the SIMD processor some modern CPUs, such as the AMD Athlon or Intel Pentium/Core chips. How is this done? ...
vector-processing
What compilers besides gcc can vectorize code?
GCC can vectorize loops automatically when certain options are specified and given the right conditions. Are there other compilers widely available that can do the same? ...
Practical use of automatic vectorization?
Has anyone taken advantage of the automatic vectorization that gcc can do? In the real world (as opposed to example code)? Does it take restructuring of existing code to take advantage? Are there a significant number of cases in any production code that can be vectorized this way? ...
Auto-vectorizing vs. vectorized code by hand
Is it better in some sense to vectorize code by hand, using explicit pragmas or to rely on or use auto-vectorization? For optimum performance using auto-vectorization, one would have to monitor the compiler output to ensure that loops are being vectorized or modify them until they are vectorizable. With hand coding, one is certain th...
Pluggable vector processing units in Clojure
I'm developing some simulation software in Clojure that will need to process lots of vector data (basically originating as offsets into arrays of Java floats, length typically in 10-10000 range). Large numbers of these vectors will need to go through various processing steps - e.g. normalising the vectors, concatenating together two stre...