gm_dma_malloc

Hi,


I have one question about gm_dma_malloc or gm_register_memory.
I got a 16-node Linux cluster connected Myrinet.
While I already read FAQ about gm_dma_malloc, I still have a question 
about "gm_dma_malloc".

As I know, "gm_dma_malloc" mmaps  user-space memory into NIC memory.
Thus, I write something on mmaped memory, and it automatically updates 
NIC memory.

My myrinet card has 8MBytes on-chip memory.
As I understand, I can only mmap  8MBytes user-space memory because my 
NIC has only 8 Mbytes.
According to your FAQ, I can mmap 7/8 physical memory.
How can I mmap 7/8 physical system memory, while my NIC has only 8 Mbytes?
Is there anyway to access directly 8MBytes on-chip memory from a user 
application?



Best,



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