On Wed, Jun 6, 2018 at 10:35 PM, Heinz Junkes <jun...@fhi-berlin.mpg.de> wrote: > 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. >
The BSP support for mvme2500 is in the qoriq family of powerpc BSPs. I have no clue how difficult it would be to use with 4.10. The APU route suggested by Till is probably ideal unless you need 'double' types... Gedare > 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. > > > _______________________________________________ > users mailing list > users@rtems.org > http://lists.rtems.org/mailman/listinfo/users _______________________________________________ users mailing list users@rtems.org http://lists.rtems.org/mailman/listinfo/users
