[dpdk-users] No free hugepages reported in hugepages when running DPDK helloworld example

[gyp sud <gypsud@gmail.com>]

I downloaded and built dpdk-stable-16.11.4 version (using
x86_64-native-linuxapp-gcc target).  I'm running Ubuntu 16.04.3 LTS.
After setting up hugepages according to http://dpdk.org/doc/quick-start or
http://dpdk.org/doc/guides-16.04/linux_gsg/sys_reqs.html

mkdir -p /mnt/huge
mount -t hugetlbfs nodev /mnt/huge
echo 64 >
/sys/devices/system/node/node0/hugepages/hugepages-2048kB/nr_hugepages

I can see the hugepages fine.

#cat /proc/meminfo | grep
HugeAnonHugePages:    284672 kB
ShmemHugePages:        0 kB
HugePages_Total:      64
HugePages_Free:       64
HugePages_Rsvd:        0
HugePages_Surp:        0
Hugepagesize:       2048 kB

But when I run the helloWorld example, it complained about no free
hugepages, see below.

#./build/helloworld -l 0-3 -n 2
EAL: Detected 4 lcore(s)
EAL: No free hugepages reported in hugepages-1048576kB
EAL: Probing VFIO support...
hello from core 1
hello from core 2
hello from core 3
hello from core 0

Also, the memory info showed free hugepages were all gone.
#cat /proc/meminfo | grep Huge
AnonHugePages:    380928 kB
ShmemHugePages:        0 kB
HugePages_Total:      64
HugePages_Free:        0
HugePages_Rsvd:        0
HugePages_Surp:        0
Hugepagesize:       2048 kB

Any idea why this is happening?

Gyp