Simple program immediately killed when running on a NFS

[Otacílio]

Dears

I'm trying to compile a simple hello world program on my RPI3. The 
program is on a directory mounted using NFS and stored in the amd64 
machine. When I compile and try to run the program in the NFS mounted 
path it does not work, when I copy the same program to a local dir it 
work, and then when I copy the program from the local dir to the NFS dir 
it works !? !?!?! Someone can, please, explain it? Look at the historic 
program.

root at rpi3:/usr/ports/benchmarks/netperf/work/netperf-2.7.0 # cc -o 
conftest conftest.c
root at rpi3:/usr/ports/benchmarks/netperf/work/netperf-2.7.0 # ./conftest
Killed
root at rpi3:/usr/ports/benchmarks/netperf/work/netperf-2.7.0 # cp conftest 
/usr/home/ota/conftest
root at rpi3:/usr/ports/benchmarks/netperf/work/netperf-2.7.0 # 
/usr/home/ota/conftest
Hello world!
root at rpi3:/usr/ports/benchmarks/netperf/work/netperf-2.7.0 # cp 
/usr/home/ota/conftest ./conftest
root at rpi3:/usr/ports/benchmarks/netperf/work/netperf-2.7.0 # ./conftest
Hello world!
root at rpi3:/usr/ports/benchmarks/netperf/work/netperf-2.7.0 # mount
/dev/mmcsd0s2a on / (ufs, local, noatime, journaled soft-updates, nfsv4acls)
devfs on /dev (devfs, local, multilabel)
/dev/mmcsd0s1 on /boot/efi (msdosfs, local, noatime)
/dev/md0 on /tmp (ufs, local, noatime, soft-updates)
/dev/md1 on /var/log (ufs, local, noatime, soft-updates)
/dev/md2 on /var/tmp (ufs, local, noatime, soft-updates)
squitch:/usr/ports on /usr/ports (nfs)


Thanks a lot!

[]'s

-Otacílio