dpholdio: Optimistic Scheduling Broken

[nmcglo]

Running dpholdio using optimistic schedule will result in very few events and no actual work being done.

mpirun -np 2 ./dpholdio --end=100 --io-files=1 --synch=3 --lookahead=.05 --nlp=32 --nkp=2 --io-store=1 --buddy-size=16 --start-events=16 --extramem=1000

generates only 2 events while the same call under --synch=2 will do a full workload of 102266 events.

[nmcglo]

Just realized this may just have to do with rio not supporting optimistic mode yet.

[gonsie]

RIO should fully support optimistic mode... I'm not sure why this is happening.