Στις Παρ, 10 Ιαν 2020 στις 12:41 μ.μ., ο/η Ioannis Venetis < ioannisvene...@gmail.com> έγραψε:
> BTW just three days ago eigensym was switched to a different Lapack > >> background function I think, so maybe we should try a brand new snapshot >> for this. >> >> >> It could always be that openblas has different optimizations for >> different Lapack functions for your newer CPU. >> >> cheers >> sven >> >> > Using 2020a-git (2020-01-08) returns the same times. Also I run the script > from either the desktop location or from the hard disk. No other program is > running etc. > > I attach my $sysinfo > > ? eval $sysinfo > bundle anonymous: > nproc = 12 > blascore = "Haswell" > hostname = "DESKTOP-OFGVHSS" > os = "windows" > mpi = 0 > blas = "openblas" > omp_num_threads = 12 > ncores = 6 > omp = 1 > blas_parallel = "OpenMP" > mpimax = 12 > wordlen = 64 > > if it could be of any value > > Yiannis > OK I went back to my old PC (I have 2 I admit!!) and I use 2019d in both cases. I get a ratio of 10 (less than half). But 'eigensym' does almost the same time while eiggen2 is much slower. So in my new (and I guess better PC) with eigensym I get the same timeA but a much faster timeB from 'eiggen2'. Riddle to be solved … :). Same thing happens with 2020a-git in both machines Thanks Yiannis
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