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42 :
43 : !> \brief
44 : !> This module contains the classes and procedures for setting up the `parallelizationModel` attribute of ParaMonte samplers.
45 : !> For more information, see the description of this attribute in the body of the module.
46 : !> \author Amir Shahmoradi
47 :
48 : module SpecBase_ParallelizationModel_mod
49 :
50 : use Constants_mod, only: IK
51 : implicit none
52 :
53 : character(*), parameter :: MODULE_NAME = "@SpecBase_ParallelizationModel_mod"
54 :
55 : integer(IK), parameter :: MAX_LEN_PARALLELIZATION_MODEL = 63
56 :
57 : character(MAX_LEN_PARALLELIZATION_MODEL) :: parallelizationModel
58 :
59 : type :: ParallelizationModel_type
60 : logical :: isSinglChain
61 : logical :: isMultiChain
62 : logical :: isForkJoin
63 : character(10) :: multiChain
64 : character(11) :: singlChain
65 : character(:), allocatable :: def
66 : character(:), allocatable :: val
67 : character(:), allocatable :: null
68 : character(:), allocatable :: desc
69 : contains
70 : procedure, pass :: set => setParallelizationModel, checkForSanity, nullifyNameListVar
71 : end type ParallelizationModel_type
72 :
73 : interface ParallelizationModel_type
74 : module procedure :: constructParallelizationModel
75 : end interface ParallelizationModel_type
76 :
77 : private :: constructParallelizationModel, setParallelizationModel, checkForSanity, nullifyNameListVar
78 :
79 : !%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
80 :
81 : contains
82 :
83 : !%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
84 :
85 1047 : function constructParallelizationModel(methodName) result(ParallelizationModelObj)
86 : #if INTEL_COMPILER_ENABLED && defined DLL_ENABLED && (OS_IS_WINDOWS || defined OS_IS_DARWIN)
87 : !DEC$ ATTRIBUTES DLLEXPORT :: constructParallelizationModel
88 : #endif
89 : use, intrinsic :: iso_fortran_env, only: output_unit
90 : use Constants_mod, only: NULL_SK, IK, PMSM
91 : use Decoration_mod, only: TAB
92 : use String_mod, only: num2str
93 : implicit none
94 : character(*), intent(in) :: methodName
95 : type(ParallelizationModel_type) :: ParallelizationModelObj
96 :
97 1047 : ParallelizationModelObj%isSinglChain = .false.
98 1047 : ParallelizationModelObj%isMultiChain = .false.
99 1047 : ParallelizationModelObj%singlChain = "singleChain"
100 1047 : ParallelizationModelObj%multiChain = "multiChain"
101 1047 : ParallelizationModelObj%def = ParallelizationModelObj%singlChain
102 1047 : ParallelizationModelObj%null = repeat(NULL_SK, MAX_LEN_PARALLELIZATION_MODEL)
103 :
104 : ParallelizationModelObj%desc = &
105 : "parallelizationModel is a string variable that represents the parallelization method to be used in "// methodName //". &
106 1047 : &The string value must be enclosed by either single or double quotation marks when provided as input. "
107 1047 : if (methodName==PMSM%ParaDRAM .or. methodName==PMSM%ParaDISE) then
108 : ParallelizationModelObj%desc = ParallelizationModelObj%desc // &
109 : "Two options are currently supported:\n\n&
110 : & parallelizationModel = '" // ParallelizationModelObj%multiChain // "'\n\n&
111 : & This method uses the Prefect Parallelism scheme in which multiple MCMC chains are generated &
112 : &independently of each other. In this case, multiple output MCMC chain files will also be generated.\n\n&
113 : & parallelizationModel = '" // ParallelizationModelObj%singlChain // "'\n\n&
114 : & This method uses the fork-style parallelization scheme. &
115 : &A single MCMC chain file will be generated in this case. At each MCMC step multiple proposal steps &
116 : &will be checked in parallel until one proposal is accepted.\n\n&
117 : &Note that in serial mode, there is no parallelism. Therefore, this option does not affect non-parallel simulations &
118 : &and its value is ignored. The serial mode is equivalent to either of the parallelism methods with only one simulation &
119 : &image (processor, core, or thread). &
120 : &The default value is parallelizationModel = '" // ParallelizationModelObj%def // "'. &
121 1047 : &Note that the input values are case-insensitive and white-space characters are ignored."
122 : ! LCOV_EXCL_START
123 : else
124 : block
125 : use Err_mod, only: Err_type, abort
126 : type(Err_type) :: Err
127 : Err%occurred = .true.
128 : Err%msg = MODULE_NAME//": Catastrophic internal error occurred. The simulation method name is not recognized."
129 : call abort(Err)
130 : error stop
131 : end block
132 : ! LCOV_EXCL_STOP
133 : end if
134 1047 : end function constructParallelizationModel
135 :
136 : !%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
137 :
138 1047 : subroutine nullifyNameListVar(ParallelizationModelObj)
139 : #if INTEL_COMPILER_ENABLED && defined DLL_ENABLED && (OS_IS_WINDOWS || defined OS_IS_DARWIN)
140 : !DEC$ ATTRIBUTES DLLEXPORT :: nullifyNameListVar
141 : #endif
142 : implicit none
143 : class(ParallelizationModel_type), intent(in) :: ParallelizationModelObj
144 1047 : parallelizationModel = ParallelizationModelObj%null
145 1047 : end subroutine nullifyNameListVar
146 :
147 : !%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
148 :
149 1143 : subroutine setParallelizationModel(ParallelizationModelObj,parallelizationModel)
150 : #if INTEL_COMPILER_ENABLED && defined DLL_ENABLED && (OS_IS_WINDOWS || defined OS_IS_DARWIN)
151 : !DEC$ ATTRIBUTES DLLEXPORT :: setParallelizationModel
152 : #endif
153 1047 : use String_mod, only: getLowerCase, replaceStr
154 : implicit none
155 : class(ParallelizationModel_type), intent(inout) :: ParallelizationModelObj
156 : character(*), intent(in) :: parallelizationModel
157 1143 : character(:), allocatable :: parallelizationModelLowerCase
158 1143 : ParallelizationModelObj%val = trim(adjustl(replaceStr(parallelizationModel," ", "")))
159 1143 : if (ParallelizationModelObj%val==trim(adjustl(ParallelizationModelObj%null))) ParallelizationModelObj%val = trim(adjustl(ParallelizationModelObj%def))
160 1143 : parallelizationModelLowerCase = getLowerCase(ParallelizationModelObj%val)
161 1143 : ParallelizationModelObj%isSinglChain = parallelizationModelLowerCase == getLowerCase(ParallelizationModelObj%singlChain)
162 1143 : ParallelizationModelObj%isMultiChain = parallelizationModelLowerCase == getLowerCase(ParallelizationModelObj%multiChain)
163 1143 : end subroutine setParallelizationModel
164 :
165 : !%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
166 :
167 1035 : subroutine checkForSanity(ParallelizationModel,Err,methodName)
168 : #if INTEL_COMPILER_ENABLED && defined DLL_ENABLED && (OS_IS_WINDOWS || defined OS_IS_DARWIN)
169 : !DEC$ ATTRIBUTES DLLEXPORT :: checkForSanity
170 : #endif
171 1143 : use Err_mod, only: Err_type
172 : use String_mod, only: num2str
173 : implicit none
174 : class(ParallelizationModel_type), intent(in) :: ParallelizationModel
175 : character(*), intent(in) :: methodName
176 : type(Err_type), intent(inout) :: Err
177 : character(*), parameter :: PROCEDURE_NAME = "@checkForSanity()"
178 1035 : if ( .not.(ParallelizationModel%isSinglChain .or. ParallelizationModel%isMultiChain) ) then
179 : ! LCOV_EXCL_START
180 : Err%occurred = .true.
181 : Err%msg = Err%msg // &
182 : MODULE_NAME // PROCEDURE_NAME // ": Error occurred. &
183 : &The input requested parallelization method (" // ParallelizationModel%val // &
184 : ") represented by variable parallelizationModel cannot be anything other than &
185 : &'singleChain' or 'multiChain'. If you don't know an appropriate value &
186 : &for ParallelizationModel, drop it from the input list. " // methodName // &
187 : " will automatically assign an appropriate value to it.\n\n"
188 : end if
189 : ! LCOV_EXCL_STOP
190 2070 : end subroutine checkForSanity
191 :
192 : !%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
193 :
194 : end module SpecBase_ParallelizationModel_mod ! LCOV_EXCL_LINE
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