Reg: How to increase Data transfer speed between host and MIC

Hi,

I was trying to offload some portion of my code and I set OFFLOAD_REPORT =3. The report is like this.

[Offload] [HOST]  [Tag 172] [CPU Time]        0.120382(seconds)

[Offload] [MIC 0] [Tag 172] [CPU->MIC Data]   58720296 (bytes)

[Offload] [MIC 0] [Tag 172] [MIC Time]        0.032349(seconds)

[Offload] [MIC 0] [Tag 172] [MIC->CPU Data]   58720256 (bytes)

[Offload] [MIC 0] [Tag 170] [State]   Gather copyout data

[Offload] [MIC 0] [Tag 170] [State]   MIC->CPU copyout data   0

[Offload] [HOST]  [Tag 170] [State]   Scatter copyout data

[Offload] [HOST]  [Tag 170] [CPU Time]        0.171873(seconds)

[Offload] [MIC 0] [Tag 170] [CPU->MIC Data]   75579486 (bytes)

[Offload] [MIC 0] [Tag 170] [MIC Time]        0.134238(seconds)

[Offload] [MIC 0] [Tag 170] [MIC->CPU Data]   28 (bytes)

For same amount of data MIC-CPU data transfer speed is much higher(40 times). PCI express speed is 8GB/s. But these timings are no where near to my expectation. Can some one tell me how can i increase data transfer speed.

Does this MIC Time include computation on MIC as well or just data transfer time?

Also, I want to know is there any concept like pinned memory (like in GPU) in case of xeon phi.

Thanks

sivaramakrishna