This section includes general software measurements (mainly timing): . ... 15feb13 compare rserv2 sse3,avx, and megs3 avx . ... call: benchphil nthreads .. setting nthreads > 1 will perform ffts with nthreads per fft . ... it looks in Drserv2/config.log (output from config) to see whether avx or sse was used in the build. ... SSE was used (even though the table says sse2). ... This also had avx enabled. --enable-sse this is the standard fftw option to include sse and sse2. bench --info-all returns: . ...