On Jul 14, 2008, at 7:55 AM, Pavel Shamis (Pasha) wrote:
I can add in head of query function something like :
if (!mca_btl_openib_component.cpc_explicitly_defined)
return OMPI_ERR_NOT_SUPPORTED;
That sounds reasonable until the ibcm userspace library issues can be
sorted out. Then perhaps this check can be removed.
Should we not even build support for it?
PRO: don't even allow the possibility of running with it, because we
know that there are issues with the ibcm userspace library (i.e.,
reduce problem reports from users)
PRO: users don't have to have libibcm installed on compute nodes
(we've actually gotten some complaints about this)
CON: OMPI is not release-synchronized with OFED; OFED could be
released with a fixed ibcm userspace library, but it still wouldn't be
built by default in OMPI
CON: users already have to have librdmacm installed on the compute
notes for the RDMA CM (e.g., probably mainly for iWARP support);
adding ibcm and rdmacm user libs at the same time might actually be
better (rather than rdmacm in v1.3 and ibcm in a future version)
Thoughts?
--
Jeff Squyres
Cisco Systems
