moeyensj

To convert MPCORB.DAT to a oorb format:

oorb --task=mpcorb --mpcorb=MPCORB.DAT --orb-out=MPCORB.orb

To propagate MPCORB.orb to a desired date:

oorb --task=propagation --orb-in=MPCORB.orb --epoch-mjd-utc=59580.173 --orb-out=MPCORB_START_59580.orb

To generate ephemeris from desired date onwards:

ix9

;
; Netatalk 3.x configuration file
;

[Global]
; Global server settings
log file = /var/log/afpd.log
;log level = default:debug afpdaemon:debug
uam list = uams_dhx.so uams_dhx2.so

rhiannonlynne

First: git tag the package for release. (please also fill out the git "Release" page, making it an official release and giving you a spot to write notes. Writing release notes as we go makes understanding changes much easier down the road!)

Next, for eups:

• log into lsst-dev as lsstsw : (without taking along your own ssh github keys!)
• ssh -a lsstsw@lsst-dev.ncsa.illinois.edu
• source bin/setup.sh
• rebuild -r sims_tag -r dm_tag lsst_sims lsst_apps (or appropriate DM git tag (12.0.rc1, etc.) and sims git tag (sims_2.2.5, etc): note that these resolve left to right, and any matching tag that is found will be used. Use the git format, not the eups format.). -- note the BUILD ID that comes from the rebuild process.

jboner

Latency Comparison Numbers (~2012)
----------------------------------
L1 cache reference                           0.5 ns
Branch mispredict                            5   ns
L2 cache reference                           7   ns                      14x L1 cache
Mutex lock/unlock                           25   ns
Main memory reference                      100   ns                      20x L2 cache, 200x L1 cache
Compress 1K bytes with Zippy             3,000   ns        3 us
Send 1K bytes over 1 Gbps network       10,000   ns       10 us
Read 4K randomly from SSD*             150,000   ns      150 us          ~1GB/sec SSD