[Gretl-devel] MPI (Re: [Gretl-users] Re: gretl 2023b released)
[moving this to gretl-devel]
Am 21.07.2023 um 20:49 schrieb Cottrell, Allin:
Ah, no, you still have to install MS-MPI (the DLLs and executables).
What I updated was the support files involved in the gretl build:
headers and the "import library".
While I haven't tested very rigorously (and don't really understand
how this would work), it seems this has speeded up MPI performance on
Windows quite substantially.
While trying to compare MPI speed on gretl 2023a vs. b, I encountered
something apparently more serious. Consider the attached variant of the
sample script from my johansensmall package. For me it runs fine on
gretl 2022c and 2023b, but fails on the version 2023a in-between. I've
seen the failure both on Win10 and Win11, both 64bit; on Win11 here the
MS-MPI version is 10.1.12498.52, don't know right now about my Win10 setup.
Of course it's good that there's no problem on the current version, but
still it would also be useful to know what caused the problem that only
affects 2023a. Perhaps the attached script should also become part of
the standard test rig. Notice that the original sample script from
johansensmall never fails (or else we would have noticed before
releasing 2023a, I guess).
Oh, does it fail on Linux with 2023a? It's always a bit more difficult
to install an older gretl version on Linux than on Windows...
(BTW, I don't see any speed difference between gretl 2022c and 2023b.)
thanks
sven
Attachments:
- js_variant.inp (application/x-gretlscript — 788 bytes)