I thought I knew the difference at one time, but I can't find it written down. Now they don't make sense to me anymore. The two phrases are terms listed on the task reports. Would someone vector me to their actual definitions?

Maybe you should give a specific example of times you do not understand. "Run time" could be the number of minutes from the time where the calculation started to the time it ended, i.e. wall time. "CPU time" could be different because if more threads work on the computation simultaneously, the CPU time would be the sum for all those threads' times. In the opposite direction, if the computation has to share a CPU core with other processes (like OS processes or other programs running on the machine) so the computation does not have access to the core all the time, then the CPU time could be lower than the run time. /JeppeSN

this definition is what I thought was the case, but then I saw some contradictions. It would be nice if the def's (and other things ) were actually written down somewhere. I'll keep checking my tasks to be sure there isn't short between my headphones. thx.