TUFLOW Message 3201 - Revision history

Emilie Nielsen at 00:34, 15 July 2025

2025-07-15T00:34:31Z

← Older revision		Revision as of 10:34, 15 July 2025
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	{{TUFLOW_Message		{{TUFLOW_Message
	\|tuflow_message=ERROR 3201: Error in U face proxy: face <id>, proxy face = <id>, proxy cells <id> and <id> not within the same sub-subdomain		\|tuflow_message=ERROR 3201 - Error in U face proxy: face <id>, proxy face = <id>, proxy cells <id> and <id> not within the same sub-subdomain
	<br>		<br>
	\|alt_msg=NA<br>		\|alt_msg=NA<br>

ShuangGao at 02:44, 10 July 2025

2025-07-10T02:44:21Z

← Older revision		Revision as of 12:44, 10 July 2025
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	\|type=[[ERROR]]		\|type=[[ERROR]]
	\|message_desc=<font color="blue"><tt>Quadtree BC Parallel Inertia Approach </tt></font><font color="red"><tt>== </tt></font><font color="black"><tt>Method B</tt></font> extracts velocities from faces parallel to the model boundary (“QT”, “HT” and “HX” types) to calculate the transverse momentum, or parallel inertia at the boundary. For example, to calculate the parallel inertia at the face highlighted by orange circle in the image below, the transverse velocity from the non-BC-face below is ~~needed~~. However, if the boundary cells are distributed across multiple CPU or GPU devices (illustrated by the red dot line), it ~~can~~ ~~require~~ velocity information from a face within another device. This ~~could cause~~ memory access violation during the simulation, thus the ERROR message is generated to stop the simulation.		\|message_desc=<font color="blue"><tt>Quadtree BC Parallel Inertia Approach </tt></font><font color="red"><tt>== </tt></font><font color="black"><tt>Method B</tt></font> extracts velocities from faces parallel to the model boundary (“QT”, “HT” and “HX” types) to calculate the transverse momentum, or parallel inertia at the boundary. For example, to calculate the parallel inertia at the face highlighted by orange circle in the image below, the transverse velocity from the non-BC-face below is required. However, if the boundary cells are distributed across multiple CPU or GPU devices (illustrated by the red dot line), the solver may need to extract velocity information from a face within another device (see the face highlighted by the purple circles). This causes memory access violation during the simulation, thus the ERROR message is generated to stop the simulation.

	[[File:Proxy face error.PNG\|600px\|caption]]		[[File:Proxy face error.PNG\|600px\|caption]]

	\|suggestions=Revise quadtree refinement polygon to ensure the cell size does not change immediately inside the model boundary. The image below shows a good example, where 2 rows of cells have the same ~~size~~ ~~and this~~ ensures the face ~~the boundary faces selected~~ by the <font color="blue"><tt>Quadtree BC Parallel Inertia Approach </tt></font><font color="red"><tt>== </tt></font><font color="black"><tt>Method B</tt></font> are always within the same CPU/GPU device.		\|suggestions=Revise quadtree refinement polygon to ensure the cell size does not change immediately inside the model boundary. The image below shows a good example, where 2 rows of cells have the same sizes which ensures the face referred by the <font color="blue"><tt>Quadtree BC Parallel Inertia Approach </tt></font><font color="red"><tt>== </tt></font><font color="black"><tt>Method B</tt></font> are always within the same CPU/GPU device.

	[[File:Proxy face error fix.PNG\|600px\|caption]]		[[File:Proxy face error fix.PNG\|600px\|caption]]

ShuangGao at 02:39, 10 July 2025

2025-07-10T02:39:01Z

← Older revision		Revision as of 12:39, 10 July 2025
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	\|type=[[ERROR]]		\|type=[[ERROR]]
	\|message_desc=<font color="blue"><tt>Quadtree BC Parallel Inertia Approach </tt></font><font color="red"><tt>== </tt></font><font color="black"><tt>Method B</tt></font> ~~Materials~~ ~~may~~ ~~use~~ ~~use~~ ~~either~~ ~~fixed~~ ~~mannings~~, ~~depth-varying~~ ~~mannings~~, or ~~log~~-~~law~~ ~~roughness~~ ~~formulations~~ ~~for~~ ~~bed~~ ~~resistance~~.		\|message_desc=<font color="blue"><tt>Quadtree BC Parallel Inertia Approach </tt></font><font color="red"><tt>== </tt></font><font color="black"><tt>Method B</tt></font> extracts velocities from faces parallel to the model boundary (“QT”, “HT” and “HX” types) to calculate the transverse momentum, or parallel inertia at the boundary. For example, to calculate the parallel inertia at the face highlighted by orange circle in the image below, the transverse velocity from the non-BC-face below is needed. However, if the boundary cells are distributed across multiple CPU or GPU devices (illustrated by the red dot line), it can require velocity information from a face within another device. This could cause memory access violation during the simulation, thus the ERROR message is generated to stop the simulation.
	When utilising log-law roughness, a maximum limit for equivalent mannings number is required as the formulation becomes singular at shallow depths.
	This limit, provided as the fixed mannings n value in the material data, must be greater than zero.

	[[File:Proxy face error.PNG\|600px\|caption]]		[[File:Proxy face error.PNG\|600px\|caption]]

			\|suggestions=Revise quadtree refinement polygon to ensure the cell size does not change immediately inside the model boundary. The image below shows a good example, where 2 rows of cells have the same size and this ensures the face the boundary faces selected by the <font color="blue"><tt>Quadtree BC Parallel Inertia Approach </tt></font><font color="red"><tt>== </tt></font><font color="black"><tt>Method B</tt></font> are always within the same CPU/GPU device.
	\|suggestions=Ensure that all materials that utilise log-law roughness have positive values for mannings n.

			[[File:Proxy face error fix.PNG\|600px\|caption]]

	\|uplink=[[3xxx_TUFLOW_Messages\|3xxx Messages]]		\|uplink=[[3xxx_TUFLOW_Messages\|3xxx Messages]]

ShuangGao at 02:25, 10 July 2025

2025-07-10T02:25:51Z

← Older revision		Revision as of 12:25, 10 July 2025
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	\|type=[[ERROR]]		\|type=[[ERROR]]
	\|message_desc=Materials may use use either fixed mannings, depth-varying mannings, or log-law roughness formulations for bed resistance.		\|message_desc=<font color="blue"><tt>Quadtree BC Parallel Inertia Approach </tt></font><font color="red"><tt>== </tt></font><font color="black"><tt>Method B</tt></font> Materials may use use either fixed mannings, depth-varying mannings, or log-law roughness formulations for bed resistance.
	When utilising log-law roughness, a maximum limit for equivalent mannings number is required as the formulation becomes singular at shallow depths.		When utilising log-law roughness, a maximum limit for equivalent mannings number is required as the formulation becomes singular at shallow depths.
	This limit, provided as the fixed mannings n value in the material data, must be greater than zero.		This limit, provided as the fixed mannings n value in the material data, must be greater than zero.

			[[File:Proxy face error.PNG\|600px\|caption]]

	\|suggestions=Ensure that all materials that utilise log-law roughness have positive values for mannings n.		\|suggestions=Ensure that all materials that utilise log-law roughness have positive values for mannings n.

ShuangGao: Created page with "{{TUFLOW_Message |tuflow_message=ERROR 3201: Error in U face proxy: face , proxy face = , proxy cells and not within the same sub-subdomain
|alt_msg=NA..."

2025-07-10T02:21:26Z

Created page with "{{TUFLOW_Message |tuflow_message=ERROR 3201: Error in U face proxy: face <id>, proxy face = <id>, proxy cells <id> and <id> not within the same sub-subdomain <br> |alt_msg=NA..."

New page

{{TUFLOW_Message
|tuflow_message=ERROR 3201: Error in U face proxy: face <id>, proxy face = <id>, proxy cells <id> and <id> not within the same sub-subdomain
<br>
|alt_msg=NA<br>

|type=[[ERROR]]
|message_desc=Materials may use use either fixed mannings, depth-varying mannings, or log-law roughness formulations for bed resistance.
When utilising log-law roughness, a maximum limit for equivalent mannings number is required as the formulation becomes singular at shallow depths.
This limit, provided as the fixed mannings n value in the material data, must be greater than zero.
|suggestions=Ensure that all materials that utilise log-law roughness have positive values for mannings n.

|uplink=[[3xxx_TUFLOW_Messages|3xxx Messages]]
}}

TUFLOW Message 3201 - Revision history

Emilie Nielsen at 00:34, 15 July 2025

ShuangGao at 02:44, 10 July 2025

ShuangGao at 02:39, 10 July 2025

ShuangGao at 02:25, 10 July 2025

ShuangGao: Created page with "{{TUFLOW_Message |tuflow_message=ERROR 3201: Error in U face proxy: face , proxy face = , proxy cells and not within the same sub-subdomain |alt_msg=NA..."

ShuangGao: Created page with "{{TUFLOW_Message |tuflow_message=ERROR 3201: Error in U face proxy: face , proxy face = , proxy cells and not within the same sub-subdomain
|alt_msg=NA..."