9751587239
Conserves VMIDs when multiple processes are in use and memory operations
are not GPU specific. For instance HIP API hipHostMalloc does not accept
a target GPU so when used with one process per GPU (ie GPU == MPI rank) we can
quickly exceed the available VMID slots if every process consumes a VMID on
every GPU.
Change-Id: Ib6fa051290089f71581029c09f9a44b9992237d1
[ROCm/ROCR-Runtime commit: 35a270ef7e]