MODAPS PCR 17-012
| PCR Number | 17-012 |
|---|---|
| Date | 2017-06-20 |
| Initiator | Sudipta Sarkar |
| Abstract | PGE72 v6.0.4 Change the lunfile array in MOD44C.c from 5 to 4 to reflect the correct number of inputs. Change lunfile[3] to lunfile[2]. Change PARAMETER250 from 100 to 150 |
| Problem Statement | PGE fails to process some of the tiles in the C6 forward processing stream running on the Centos-7 system |
| Description of Change | The C6 operational version of PGE72 failed at random when the operational forward processing transitioned to the Centos-7 system mainly because of bad memory. PGE required cleaning up of the source code used to process the input product in the L2G-heavy format. Cleaned the source codes, variables, reference to select the required number of inputs while using the L2G-lite formatted product as input. |
| Products Affected | MOD44CH, MOD44CQ, MYD44CH, MYD44CQ |
| Software Affected | PGE72 v6.0.4 |
| Processing String to Receive the Change | Terra and Aqua Forward Processing and Terra and Aqua Reprocessing |
| Downstream Product Effects | MOD44B (VCF) – processing transitioned to Centos-7 in March 2017. VCF is an annual product, to be made for 2017 in Jan 2018 |
| Data Granules to be Used for Science Testing | 16-day global test with start day 2017081 |
| Justification | Too many missing tiles at random globally in the one year period could have significant impact on the quality of the annual land cover product. |
| Effective Date for Implementation of Change | Completed |
| Status | Major algorithm development completed. Sadashiva Devadiga approved on 06/20/2017. Michael King approved 06/26/2017. Gang Ye implemented 06/26/2017. |
