3/31/2024 0 Comments Linpack benchmark equationsOnce again to use the cache efficiently it is advised to have all arrays start at the boundary of memory pages. Often n is selected to be the smallest integer divisible by 8 that is greater than N. Do avoid this it is advised to set n>N inserting some padding between the column data. The reason is that when n=N the algorithm running in several parallel threads may run into a phenomenon known as cache thrashing. Note that we use a different symbol n instead of N. This is equivalent to solving a vector equation Ax=b where x and b are N-dimensional vectors and A is an N*N matrix.Īn N*N matrix is represented in the memory as an N*N array where individual columns are stored at offsets 0, n, 2*n etc. Linpack benchmark solves a system of N simultaneous linear equations. The parameters that you seem to be confused are all related to the way matrices are represented and accessed. ![]() This is the setup for Intel optimized Linpack benchmark.
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