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Results tagged with timing
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user 16397
This Tag is used for two things: Questions regarding improving execution speed and questions where various methods are compared for execution speed.
25
votes
3
answers
680
views
Sudden increase in timing when summing over 250 entries
I see a sudden increase of Timing by a factor of thousands when I sum over 250 elements of a matrix rather than over 249. … So for instance, this table contains sums from 1 to 249 and it takes 0.0002s
Clear[vec, time];
vec = Table[i, {i, 100}, {j, 100}, {k, 300}];
time = Timing[
Table[Sum[vec[[i, j, k]], {k, 1, 249}], {i, …
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