There is RTEMS 5 support for the MVME2500 made by Sebastian Huber. Unfortunately, I have not been able to test it properly with EPICS7. I will try it after the Epics meeting and will report.
Heinz > On 6. Jun 2018, at 23:24, Matt Rippa <mri...@gemini.edu> wrote: > > Thanks for the fast reply. Of all the mvme boards you listed, > the 3100 hits a nice price point and we're attempting to find > suitable replacement stock (quantity 30+) for the 2700 which are no longer > manufactured. > > Are the 6100 boards on beatnik bsp the only remaining option for RTEMS? > They cost nearly twice as much and have shown thermal regulation issues. > > -Matt > > On Wed, Jun 6, 2018 at 11:10 AM, Michael Davidsaver > <mdavidsa...@ospreydcs.com> wrote: > Hi Matt, > > The MVME3100 is based on the MPC8540 processor. This chip doesn't have an > FPU. > Other boards do (eg. mvme270x, mvme6100, or mvme2500) and RTEMS supports this. > > I can certainly confirm that lack of an FPU really hurts performance, even > something as (apparently) simple as integer to float. > > Michael > > > On 06/06/2018 02:03 PM, Matt Rippa wrote: > > It appears we've compiled our mvme3100 bsp without FPU support. > > We're on the mvme3100 running EPICS 3.14.12.7 and RTEMS 4.10.2. > > > > We're attempting to commission our astrometric kernel control system > > and we've run into trouble meeting some of our thread deadlines. What > > we've found is a transform routine that takes our mvme2700 ~200 us, > > takes the mvme3100 ~8 ms. So not a surprise to see this with only > > "-msoft-float"? > > > > ... > > 2018-05-31-tcs.log:May 31 11:41:15 E) PORT: tcs_vme, MSG: Welcome to > > rtems-4.10.2(PowerPC/Generic (*no FPU*)/mvme3100) > > > > Is FPU support possible with RTEMS 4.10.2? If so, what would we need to do? > > It looks like there's a multilib on 4.11.2 > > https://docs.rtems.org/releases/rtems-docs-4.11.2/cpu-supplement/powerpc.html#multilibs(*Eg., > > see #13* ) > > > > Here's our bsp specs: > > > > beatnik: > > -specs bsp_specs -qrtems -fasm -c -mcpu=7400 -D__ppc_generic -DUNIX -O2 -g > > -g -Wall > > (mvme2700) mvme-2307: > > -specs bsp_specs -qrtems -fasm -c -mcpu=604 -mmultiple -mstring > > -mstrict-align -meabi -DUNIX -O2 -g -g -Wall > > mvme-3100 > > -specs bsp_specs -qrtems -fasm -c -mcpu=powerpc *-msoft-float* > > -D__ppc_generic -DUNIX -O2 -g -g -Wall > > > > Thank you! > > -Matt > > > > > > -- > > ---------------------------------------------------------------------- > Das FHI verarbeitet, speichert und loescht Daten im Rahmen seiner > Geschaeftstaetigkeit gemaess der Datenschutz-Grundverordnung (DSGVO) > [General Data Protection Regulation (GDPR)] der Europaeischen Union. > ---------------------------------------------------------------------- Das FHI verarbeitet, speichert und loescht Daten im Rahmen seiner Geschaeftstaetigkeit gemaess der Datenschutz-Grundverordnung (DSGVO) [General Data Protection Regulation (GDPR)] der Europaeischen Union.
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