On Dec 11, 2006, at 4:04 PM, Reese Faucette wrote:
GM: gm_register_memory will be able to lock XXX pages (YYY MBytes)
Is there a way to tell GM to pull more memory from the system?
GM reserves all IOMMU space that the OS is willing to give it, so
what is
needed is a way to tell the OS and/or machine to allow a bigger
chunk of
IOMMU space to be grabbed by GM. Note that IOMMU space is not the
same as
the amount of memory a process can used, it is the amount of DMA-
able memory
that a driver can have "registered" at any one time. MPI then has
to manage
this space much like a VMM has to manage physical memory vs. page
space.
-reese
Well I have no luck in finding a way to up the amount the system will
allow GM to use. What is a recommended solution? Is this even a
problem in most cases? Like am i encountering a corner case?
_______________________________________________
users mailing list
us...@open-mpi.org
http://www.open-mpi.org/mailman/listinfo.cgi/users
