I got this after about 7-8 hours of precheck running: [06/18/21 192252 PDT] FAIL DRC Checks on GDS Failed, Reason: magic segfaulted. You ran out of RAM. Please check: /mnt/uffs/user/u5411_mrg/design/ucsc_openram_test_chip/jobs/mpw_precheck/feccdcf4-fd84-47f7-baa9-fb894310e103/magic_drc.log

I was asked by efabless to rerun the precheck after some fixes at their end. Resolved with rerun!