Could be hitting a critical cache stride. See also https://stackoverflow.com/questions/11413855/why-is-transposing-a-matrix-of-512x512-much-slower-than-transpos

Could be hitting a critical cache stride. See also https://stackoverflow.com/questions/11413855/why-is-transposing-a-matrix-of-512x512-much-slower-than-transposing-a-matrix-of https://stackoverflow.com/questions/11413855/why-is-transpos...