Estimating Runtimes - Revision history

Abigail.lillo at 15:26, 15 January 2025

2025-01-15T15:26:15Z

← Older revision		Revision as of 01:26, 16 January 2025
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	This page ~~contains more~~ information on estimating runtimes in TUFLOW. ~~This~~ ~~only looks at the~~ 2D computational time, for ~~most~~ ~~cases~~ ~~the~~ 1D ~~calculations~~ ~~would~~ ~~add~~ ~~less~~ ~~than~~ 1% to ~~the~~ ~~runtime.~~ ~~Note~~ ~~that~~ ~~the~~ ~~below~~ ~~information~~ is ~~applicable~~ ~~for~~ ~~TUFLOW~~ ~~Classic, not~~ TUFLOW HPC. ~~<br>~~		This page provides information on estimating runtimes for TUFLOW, specifically focusing on 2D computational time for TUFLOW Classic (not TUFLOW HPC). For details on how TUFLOW HPC runtimes differ from TUFLOW Classic, refer to [[HPC_FAQ#How_much_faster_is_TUFLOW_HPC_compared_to_Classic.3F \| How much faster is TUFLOW HPC compared to Classic?]]

			This estimation also does not account for 1D computational time. In the majority of cases the 2D computational load is far greater than the 1D, and as such, is typically the dominant factor that influences the overall simulation runtime. The proportion of simulation time spent on the 1D and 2D hydraulic calculations, and also other tasks, can be reviewed via the [https://docs.tuflow.com/classic-hpc/manual/2023-03/Checks-and-Logs-1.html#run-stats-3 _run_stats.txt] log file.

	<br>		<br>
	The spreadsheets linked below can be used to estimate TUFLOW simulation times based on the cell size, catchment area and simulation time (i.e. event duration). The runtime depends on a number of factors such as the speed of the CPU and also the fraction of the model that is wet. The more wet cells the more calculations that are required and therefore the slower the simulation. <br>		The spreadsheets linked below can be used to estimate TUFLOW simulation times based on the cell size, catchment area and simulation time (i.e. event duration). The runtime depends on a number of factors such as the speed of the CPU and also the fraction of the model that is wet. The more wet cells the more calculations that are required and therefore the slower the simulation. <br>

Pavlina Monhartova at 01:41, 19 November 2024

2024-11-19T01:41:58Z

← Older revision		Revision as of 11:41, 19 November 2024
Line 1:		Line 1:
	This page contains more information on estimating runtimes in TUFLOW. This only looks at the 2D computational time, for most cases the 1D calculations would add less than 1% to the runtime. Note that the below information is applicable for TUFLOW "Classic", not TUFLOW HPC. <br>		This page contains more information on estimating runtimes in TUFLOW. This only looks at the 2D computational time, for most cases the 1D calculations would add less than 1% to the runtime. Note that the below information is applicable for TUFLOW Classic, not TUFLOW HPC. <br>
	<br>		<br>
	The spreadsheets linked below can be used to estimate TUFLOW simulation times based on the cell size, catchment area and simulation time (i.e. event duration). The runtime depends on a number of factors such as the speed of the CPU and also the fraction of the model that is wet. The more wet cells the more calculations that are required and therefore the slower the simulation. <br>		The spreadsheets linked below can be used to estimate TUFLOW simulation times based on the cell size, catchment area and simulation time (i.e. event duration). The runtime depends on a number of factors such as the speed of the CPU and also the fraction of the model that is wet. The more wet cells the more calculations that are required and therefore the slower the simulation. <br>

Pavlina Monhartova at 01:39, 19 November 2024

2024-11-19T01:39:25Z

← Older revision		Revision as of 11:39, 19 November 2024
Line 1:		Line 1:
	This page contains more information on estimating runtimes in TUFLOW. This only looks at the 2D computational time, for most cases the 1D calculations would add less than 1% to the runtime. Note the below is for TUFLOW "Classic" ~~and~~ not TUFLOW HPC ~~ran either on GPU or CPU~~. <br>		This page contains more information on estimating runtimes in TUFLOW. This only looks at the 2D computational time, for most cases the 1D calculations would add less than 1% to the runtime. Note that the below information is applicable for TUFLOW "Classic", not TUFLOW HPC. <br>
	<br>		<br>
	The spreadsheets linked below can be used to estimate TUFLOW simulation times based on the cell size, catchment area and simulation time (i.e. event duration). The runtime depends on a number of factors such as the speed of the CPU and also the fraction of the model that is wet. The more wet cells the more calculations that are required and therefore the slower the simulation. <br>		The spreadsheets linked below can be used to estimate TUFLOW simulation times based on the cell size, catchment area and simulation time (i.e. event duration). The runtime depends on a number of factors such as the speed of the CPU and also the fraction of the model that is wet. The more wet cells the more calculations that are required and therefore the slower the simulation. <br>

Pavlina Monhartova at 23:34, 19 February 2019

2019-02-19T23:34:20Z

← Older revision		Revision as of 09:34, 20 February 2019
Line 1:		Line 1:
	This page contains more information on estimating runtimes in TUFLOW. This only looks at the 2D computational time, for most cases the 1D calculations would add less than 1% to the runtime. Note the below is for TUFLOW "Classic" and not TUFLOW GPU. <br>		This page contains more information on estimating runtimes in TUFLOW. This only looks at the 2D computational time, for most cases the 1D calculations would add less than 1% to the runtime. Note the below is for TUFLOW "Classic" and not TUFLOW HPC ran either on GPU or CPU. <br>
	<br>		<br>
	The spreadsheets linked below can be used to estimate TUFLOW simulation times based on the cell size, catchment area and simulation time (i.e. event duration). The runtime depends on a number of factors such as the speed of the CPU and also the fraction of the model that is wet. The more wet cells the more calculations that are required and therefore the slower the simulation. <br>		The spreadsheets linked below can be used to estimate TUFLOW simulation times based on the cell size, catchment area and simulation time (i.e. event duration). The runtime depends on a number of factors such as the speed of the CPU and also the fraction of the model that is wet. The more wet cells the more calculations that are required and therefore the slower the simulation. <br>
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	The second sheet in the attached excel files is titled '''Cell_Calcs_per_second''' and gives a guide to estimating this on your machine.		The second sheet in the attached excel files is titled '''Cell_Calcs_per_second''' and gives a guide to estimating this on your machine.

	Given the inexact ~~the~~ nature of the calculations these are estimates only, but do give a reasonable indication of runtime!		Given the inexact nature of the calculations these are estimates only, but do give a reasonable indication of runtime!

	[[File:Estimate runtimes metric 001.xlsx \| Estimating TUFLOW runtimes (metric)]]<br>		[[File:Estimate runtimes metric 001.xlsx \| Estimating TUFLOW runtimes (metric)]]<br>

Par: Created page with "This page contains more information on estimating runtimes in TUFLOW. This only looks at the 2D computational time, for most cases the 1D calculations would add less than 1% ..."

2014-10-30T00:11:38Z

Created page with "This page contains more information on estimating runtimes in TUFLOW. This only looks at the 2D computational time, for most cases the 1D calculations would add less than 1% ..."

New page

This page contains more information on estimating runtimes in TUFLOW. This only looks at the 2D computational time, for most cases the 1D calculations would add less than 1% to the runtime. Note the below is for TUFLOW "Classic" and not TUFLOW GPU. 
 
The spreadsheets linked below can be used to estimate TUFLOW simulation times based on the cell size, catchment area and simulation time (i.e. event duration). The runtime depends on a number of factors such as the speed of the CPU and also the fraction of the model that is wet. The more wet cells the more calculations that are required and therefore the slower the simulation. 

The timestep used in a TUFLOW simulation is dependent on a variety of factors such as the steepness of the topography, the depth of water and the velocities encountered, in the spreadsheet a typical range of timesteps is calculated based on the cell size. For a TUFLOW model running in metric, the timestep (in seconds) is typically between 1/5 to 1/2 of the cell size (in metres). For example a 10m model will typically have a timestep between 2 and 5 seconds. Therefore, two estimates of runtime are provided in the spreadsheet one based on the smaller and one based on the larger timestep. 

The second sheet in the attached excel files is titled '''Cell_Calcs_per_second''' and gives a guide to estimating this on your machine.

Given the inexact the nature of the calculations these are estimates only, but do give a reasonable indication of runtime!

[[File:Estimate runtimes metric 001.xlsx | Estimating TUFLOW runtimes (metric)]] 
[[File:Estimate runtimes Imperial 001.xlsx | Estimating TUFLOW runtimes (feet)]]