Re: [Gretl-devel] "start gretlcli.exe" vs. simple "gretlcli.exe" (on Windows)

On Wed, 11 Jan 2017, Sven Schreiber wrote: Here's an update, now that bundles can be passed via MPI. See what you think. Reminder: this is (one version of) an apparatus which allows several gretl processes to work on a common problem but with different parameters, the parameters to be contained in bundles. <hansl name="mpibuns.inp"> # Everybody needs to know about b bundle b = null if $mpirank == 0 # Rank 0 does the parameter setup, and sends # param bundles out to the other workers scalar N = $mpisize bundles B = array(N) loop i=1..N -q b = null b.int = i b.mat = I(i+1) B[i] = b if i > 1 mpisend(b, i-1) endif endloop b = B[1] else # The other workers collect their bundles # from rank 0 b = mpirecv(0) endif # Common code block goes here: trivial in this case, # but can be as complex as you like b.mat = b.mat * b.int b.str = "done!" if $mpirank > 0 # Other workers send their results back mpisend(b, 0) else # Rank 0 collects them... B[1] = b loop i=2..N -q B[i] = mpirecv(i-1) endloop # and displays the results loop i=1..N -q printf "matrix %d\n%5g\n", i, B[i].mat printf "string %d: %s\n\n", i, B[i].str endloop endif </hansl> Execute with mpiexec -n <whatever> gretlmpi mpibuns.inp Allin