Experimental Physics and
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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
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ANJ, 06 Jun 2018 |
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