OSCER users, Schooner scheduled maintenance outage Wed Apr 19 8am-midnight CT We'll do the following: (1) Update the Linux kernel, which we hope will resolve a bug that we've recently tripped in the Network File System (NFS) software. (If this upgrade doesn't resolve the bug, we have a workaround, but we'd rather have a bug fix.) (2) Deploy OURdisk metadata/monitor/manager servers. (3) If time permits, update Slurm to the most recent stable major version (# 22). This will give us the ability to create a "burst buffer" for applications that do large numbers of tiny reads. Soon, we will deploy a burst buffer server, with 16 NVMe SSDs (~40 TB usable), hopefully in production by May -- that'll make I/O for such applications significantly faster. (4) If time permits, physically shift support and diskfull servers within the support/diskfull racks, to better utilize power and cooling capacity for those functions. (5) If time permits, installat Power Distribution Unit (PDU) power strips in compute/GPU racks, which will increase the power capacity for compute/GPU nodes, both OSCER-owned and condominium. We apologize for the inconvenience -- as always, our goal is to make OSCER resources better! The OSCER Team ([log in to unmask])