Condominium access is an important part of the HPC national service that ICHEC provides to the research community. A condominium share is a fractional allocation of the computing resources of the central national HPC system. A number of institutions are already using this approach on ICHEC’s existing Stokes infrastructure to provide institutional access and all of these institutions are very satisfied with the model. In effect, a condo permits institutions to grant resources directly to their researchers as if it was a local cluster. The condos presently allocated on the national research infrastructure are outlined in the table below.
|Institution||No. Shares||No. Cores|
The condominium model is an ideal, value-for-money shared service. The ‘local/HEI-based’ cluster is managed by ICHEC’s highly experienced system administrators centrally rather than a ‘physical local cluster’ managed by less experienced local staff. These ‘local’ staff are more often than not postdoctoral researchers whose effort could or should be more advantageously employed in the computational modeling laboratory.
The full benefits of the condominium, shared services model can be summarized as follows:
In summary, the condominium model leads to significant savings in management and administrative overheads for the institutions and funding agencies alike. It represents a realistic and effective road map for the provision of high-end compute resources within a shared services framework for the national research community and in terms of locally-controlled access, it meets the objectives and needs of the HEIs.
It is also worth noting that this model was also strongly endorsed by panels of international experts convened by SFI as part of its mid-term review of ICHEC (Q4-2011) and by the HEA for its “Review of the Provision of High Performance Computing in Ireland”.
While ICHEC operates the condo system as (a seamless) part of the complete cluster, ICHEC staff provides helpdesk and software provision to support condo users in the same way as if the users were accessing the national service. That said, ICHEC staff do not grant direct access to the condos. Each institution involved has a local point of contact for its researchers. These local contacts manage access to its condo.
Condominium users are also entitled to hold national service project resources. Mixing usage between both mechanisms is very straightforward. Jobs are submitted to the system via PBS scripts in the normal way. A condo or project can provide the hours simply be changing the account following the -A directive to a project code or the condo code as listed in the above table e.g. using the University of Limerick Condo #PBS -A ul01
|UCD||Research IT Services|
Further to the Stokes access discussed above NUI Galway users who wish to gain alternate access to Stoney should contact ICHEC at firstname.lastname@example.org and we will direct your request to the appropriate person within NUI Galway.