[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?

Am 25.07.2023 um 01:09 schrieb Cottrell, Allin: > On Mon, Jul 24, 2023 at 4:34 PM Sven Schreiber > <sven.schreiber(a)fu-berlin.de&gt; wrote: >> [moving this to gretl-devel] >> >> Am 21.07.2023 um 20:49 schrieb Cottrell, Allin: >>> 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. >> ... >> Oh, does it fail on Linux with 2023a? > On Linux, your script runs OK on both 2023a and 2023b. OK; do you have a script where you saw the speed-up on Windows?