Linear Estimation for Loop Running Time in MATLAB
Mar. 25, 2024
In MATLAB, the loop running time can be linearly estimated using the following code:
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clc,clear,close all
numEpochs = 100;
start = tic;
for epoch = 1:numEpochs
A = rand(12000,4400);
B = rand(12000,4400);
if ~mod(epoch,10)
elapsedTime = duration(0,0,toc(start),"Format","hh:mm:ss");
estimatedRemainingTime = (numEpochs/epoch-1)*elapsedTime; % Linear estimation
currentTime = datetime("now","format","dd/MM/yyyy HH:mm:ss"); % Attention here: "dd/MM/yyyy HH:mm:ss", not "dd/MM/yyyy hh:mm:ss"
ETA = currentTime+estimatedRemainingTime;
fprintf("%s/%s (%.2f%%), Elapsed time: %s, Estimated remaining time: %s, Current time: %s, ETA: %s\n", ...
num2str(epoch),num2str(numEpochs),epoch/numEpochs*100, ...
elapsedTime,estimatedRemainingTime, ...
currentTime,ETA);
end
end
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10/100 (10.00%), Elapsed time: 00:00:09, Estimated remaining time: 00:01:29, Current time: 25/03/2024 05:01:40, ETA: 25/03/2024 05:03:09
20/100 (20.00%), Elapsed time: 00:00:19, Estimated remaining time: 00:01:18, Current time: 25/03/2024 05:01:50, ETA: 25/03/2024 05:03:08
30/100 (30.00%), Elapsed time: 00:00:29, Estimated remaining time: 00:01:08, Current time: 25/03/2024 05:01:59, ETA: 25/03/2024 05:03:07
40/100 (40.00%), Elapsed time: 00:00:38, Estimated remaining time: 00:00:58, Current time: 25/03/2024 05:02:09, ETA: 25/03/2024 05:03:07
50/100 (50.00%), Elapsed time: 00:00:48, Estimated remaining time: 00:00:48, Current time: 25/03/2024 05:02:19, ETA: 25/03/2024 05:03:07
60/100 (60.00%), Elapsed time: 00:00:58, Estimated remaining time: 00:00:38, Current time: 25/03/2024 05:02:28, ETA: 25/03/2024 05:03:07
70/100 (70.00%), Elapsed time: 00:01:07, Estimated remaining time: 00:00:29, Current time: 25/03/2024 05:02:38, ETA: 25/03/2024 05:03:07
80/100 (80.00%), Elapsed time: 00:01:17, Estimated remaining time: 00:00:19, Current time: 25/03/2024 05:02:48, ETA: 25/03/2024 05:03:07
90/100 (90.00%), Elapsed time: 00:01:27, Estimated remaining time: 00:00:09, Current time: 25/03/2024 05:02:57, ETA: 25/03/2024 05:03:07
100/100 (100.00%), Elapsed time: 00:01:36, Estimated remaining time: 00:00:00, Current time: 25/03/2024 05:03:07, ETA: 25/03/2024 05:03:07
where elapsedTime and estimatedRemainingTime are duration data type1, and currentTime and ETA are datetime data type2:
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>> whos elapsedTime estimatedRemainingTime currentTime ETA
Name Size Bytes Class Attributes
ETA 1x1 46 datetime
currentTime 1x1 46 datetime
elapsedTime 1x1 24 duration
estimatedRemainingTime 1x1 24 duration
Anyway, the ability to perform arithmetic operations between duration and datetime data types makes it convenient to estimate loop end time.
References