0028199: Add possibility to set number of threads for parallel execution - MantisBT

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ID

Project

Category

View Status

Date Submitted

Last Update

0028199

Open CASCADE

[OCCT] OCCT:Coding

public

2016-12-07 09:47

2019-07-10 19:27

Reporter

aml

Assigned To

ski

Priority

normal

Severity

feature

Status

assigned

Resolution

open

Platform

OS

OS Version

Product Version

[OCCT] 7.1.0

Target Version

[OCCT] 7.5.0*

Fixed in Version

Summary

0028199: Add possibility to set number of threads for parallel execution

Description

Nowadays OCCT library contains set of algorithms with parallel sections. Now it is possible to turn on parallel mode and not possible to set number of threads.

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No tags attached.

Test case number

Relationships

related to	0026365	assigned	kgv	Optimization of work of OSD_Parallel class members for GeomLib_CheckCurveOnSurface
parent of	0030573	closed	apn	OSD_Parallel_TBB: limit number of execution threads using settings of OSD_ThreadPool::DefaultPool()
related to	0029935	closed	bugmaster	Foundation Classes - introduce OSD_ThreadPool class defining a thread pool

Notes
(0081719) kgv (developer) 2019-01-10 16:28 edited on: 2019-01-10 16:29	Since OSD_ThreadPool introduction by 0029935 it is now possible specifying number of threads within OSD_ThreadPool::Launcher constructor (to specify lower amount of threads from pool) and within OSD_ThreadPool constructor / OSD_ThreadPool::Init() to specify amount of threads in pool. This does not affect properties of TBB pool, when it is used instead of OSD pool.

(0081751) msv (developer) 2019-01-11 11:12	Just an idea to consider may be during this patch preparation. BO has the option IsParallel. If the user does not set it to true he expects all the code will run in one thread. But the code of GeomLib_CheckCurveOnSurface is always called in multi-thread mode (the argument of Perform() method isTheMultyTheradDisabled = Standard_False). So, in order to make consistent behavior of the code regarding the flag myRunParallel of BO, it is needed to pass this flag through the chain of calls BOPAlgo_PaveFiller::PerformFF() -> IntTools_FaceFace -> IntTools_Tools::ComputeTolerance() -> GeomLib_CheckCurveOnSurface::Perform().

Issue History
Date Modified	Username	Field	Change
2016-12-07 09:47	aml	New Issue
2016-12-07 09:47	aml	Assigned To	=> abv
2016-12-07 10:10	kgv	Severity	minor => feature
2017-01-18 17:32	abv	Assigned To	abv => ski
2017-01-18 17:32	abv	Status	new => assigned
2017-07-20 12:31	kgv	Target Version	7.2.0 => 7.4.0
2017-07-20 12:34	kgv	Relationship added	related to 0026365
2018-07-07 02:32	kgv	Relationship added	related to 0029935
2019-01-10 16:28	kgv	Note Added: 0081719
2019-01-10 16:29	kgv	Note Edited: 0081719	View Revisions
2019-01-11 11:12	msv	Note Added: 0081751
2019-03-25 14:23	kgv	Relationship added	parent of 0030573
2019-07-10 19:27	abv	Target Version	7.4.0 => 7.5.0*

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