unable to create QP after set HUGE_RC to y

Hi,

I had a problem since I set HUGE_RC to y in order for HCA to use huge pages for QP and CQ.  It shows up the following error message:

Unable to create QP.

Couldn't create IB resources

After I remove the environment variable, it works fine again. On my system, I have huge pages of 1GB in size, and the OS reserves 8 such pages.

I am using ConnextX-3 with mlx4_0.

I am wondering what could be the cause for such errors.

Thanks in advance,

Sam