Overview of Science Support SystemsReview of SSS Software Readiness for SRO, June 5, 2009

Bryan ButlerEVLA Computing Division Head

Remaining Milestone Schedule

A - WIDAR0 testing supportB - full OSRO support (256 MHz); begin support of RSRO capability (2 GHz)C - begin support of full-bandwidth RSRO capability (8 GHz)D - begin support of narrow-band RSRO capability (recirculation)E - begin support of mixed-bandwidth RSRO capability (different widths/channels per

subband)F - full OSRO support (2 GHz); begin support of correlator resource reallocation RSRO

capability (trade subbands for channels)G - begin support of RSRO capability (special capabilities)H - full OSRO support (8 GHz)

Crude Software Block Diagram

What you are reviewing here

RequirementsWe have a detailed requirements document (available onthe web as a computing memo) covering all SSSsubsystems:• PST• OPT• OST• AATRequirements have priority and timescale. Theserequirements are for the final EVLA software system.

Requirements - SROWe also have high level requirements (or “deliverables”)from operations and the construction project for SROobserving. An example:• “PST updated for OSRO”We believe that these, combined with the granular overallrequirements and our own domain knowledge, aresufficient. However, to be sure that we are not lettingsomething slip through the cracks, we are in the processof gathering more granular requirements for SROobserving (as modifications to the spreadsheet for the fullconstruction project requirements).

DATAFLOW

High Level Block Diagram

ObservationPreparationTool (OPT)

Ast

rono

mer

or

Staf

f

Project EVLA ObservingHeuristics

Program Block(Set of Scheduling Blocks for one Program)

Proposal SubmissionTool (PST)

To Observation Scheduling Tool

High Level Design (1)

Portal

Proposal HandlingTool (PHT)

Proposal

Aut

hent

icat

edA

stro

nom

er o

r St

aff

High Level Design (2)

ObservationSchedulingTool (OST)

Executor

Next SBExecutionState

EquipmentState

Metadata to DCAF

Operator

Environment

From OPT

Results from TelCal

Sequence of ConfigurationsAntenna Delays

Archive

Archive

Operator

Heuristics

Metadata to DCAF

To AMCS& CMCS

From AMCS& CMCS

High Level Design (3)

HardwareM&C

AMCS

CMCS

RF EVLAAntennas

FOTSReceiver

Station,BaselineBoards Lag Frames

CBEState Counts

RawVis

Equipment State,Data AddressingInfo, Messages,Alerts, etc.

From Executor

FF

To Archive& TelCal

To DCAFTo DCAF

High Level Design (4)

SDM

Data Capture AndFormat (DCAF)

From CMCS

TelCal

SDM

From AMCS& CMCS

To ExecutorAnd Archive

To Archive

Quick LookPipeline

(QLP)

Astronomer orOperator

ObservationMonitoring

Tool (OMT)

M&CArchive

Portal

AuthenticatedAstronomer or

OperatorM&CArchive

To Archive (?)

TelCalResults

From DCAF

DataPost-Processing

(DPP)

ImageCubes

VO Astronomer

Default ImagePipeline (DIP)

Cubes (?)

From CMCS

High Level Design (5)

ArchiveArchive Access Tool

(AAT)

Astronomer

Portal

AuthenticatedAstronomerReprocessed

ProprietaryProducts

Existing ProprietaryProducts

OpenProducts

OpenProducts

Trigger