Required and optional features to support the ch4 ofi netmod

Jump to bottom

Ken Raffenetti edited this page Feb 7, 2019 · 6 revisions

required capabilities

FI_EP_RDM
FI_THREAD_DOMAIN
- MPICH serializes all calls to libfabric. Stronger thread guarantees will work, but may cause performance loss.
FI_MSG
FI_MULTIRECV
FI_READ (for large message rndv)
- planned to make optional
FI_ASYNC_IOV >= 3

optional capabilities

for tagged send/recv
- FI_TAGGED + FI_DIRECTED_RECV + FI_REMOTE_CQ_DATA >= 4 bytes
for rma
- FI_RMA + FI_READ + FI_WRITE + FI_REMOTE_READ + FI_REMOTE_WRITE
for atomics
- FI_ATOMICS

ch4 supports all of the following modes

memory registration
- FI_MR_BASIC
- FI_MR_SCALABLE
auto progress
- FI_PROGRESS_AUTO
- FI_PROGRESS_MANUAL
endpoint creation
- fi_endpoint()
- fi_scalable_ep()