A parallel loop of 32 iterations, spread across 4 threads. The
colour of each cell tells you which thread ran that iteration. Notice how the
three policies hand out work differently — and how uneven workloads change which
one keeps every thread busy. This is exactly what 01-omp-for-schedule.c prints as
text; here you can see the shape of it.
Ready — pick a schedule and press Run.
static splits the 32 iterations into 4 equal, contiguous blocks decided up
front — zero coordination cost. Perfect when every iteration costs the same.