IPAC 2MASS Working Group Meeting #92 Minutes

IPAC 2MASS Working Group Meeting #92 Minutes, 4/09/96

Attendees: R. Beck, T. Chester, R. Cutri, T. Evans, J. Fowler, L. Fullmer, G. Kopan, B. Light, H. McCallon, J. Rosenberg, S. Wheelock


  1. Action Items From the PS CDR
  2. Project Status Updates
  3. Memory Upgrades
  4. Inputs to the QUALITY Subsystem


  1. Action Items From the PS CDR -- Due dates for the Action Items from the Point Source CDR have been renegotiated in a telecon with NASA Headquarters. R. Cutri will distribute a new list with due dates. Cognizant engineers are requested to review these dates and respond to R. Cutri if any problems are apparent. The closure mechanism for action items remains an email memo to R. Cutri with "cc: 2mass" explaining how the item was closed. Subsystem liens can be closed by making the appropriate modifications to the software and documentation and redelivering.

  2. Project Status Updates -- R. Cutri reported on several updates to the project status as follows.

  3. Memory Upgrades -- Since the new hardware configuration involves 8 ultrasparc CPUs for the production cluster instead of 24 Sparc/1000 CPUs, some concern has developed over the amount of memory per CPU. This was resolved for the production cluster in this discussion, which concluded that doubling the memory per CPU was prudent and not very expensive, so that the configuration is now seen as two machines with 4 CPUs each and 512 MBytes of high speed memory each.

    It was not clear whether similar upgrades were needed for the analysis and data base machines. T. Evans agreed to review the needs with B. Narron and issue a report.

  4. Inputs to the QUALITY Subsystem -- Since the system integration is drawing nearer, it is time to organize the system wide information flow into the QUALITY subsystem. It is too early to request SIS level definitions of the information from each subsystem, and in fact very detailed definitions would be a bit premature at this time, but a prioritized list of possible types of information should be formulated by each cognizant engineer. These lists will be discussed at a working group meeting in a week or two. The guidelines for development of the interfaces are as follows.