table-test.lua

-- E. Culurciello, November 2016
-- test to see if table insert/remove is slower than table addressing

iters = 1e5
tablesize = 1e4
tab1={}
item = torch.randn(iters,1024)

sys.tic()
for i=1,iters do
   if i>tablesize then table.remove(tab1,1) end
   table.insert(tab1, item[i]:clone())
end
print('table insert', sys.toc())

tabIdx = 1
sys.tic()
for i=1,iters do
   tab1[tabIdx%tablesize+1] = item[i]:clone()
   tabIdx = tabIdx + 1
end
print('table address', sys.toc())