dynare/matlab/parallel/GiveCPUnumber.m

75 lines
1.9 KiB
Matlab

function [nCPU]= GiveCPUnumber (ComputerInformations, Environment)
% PARALLEL CONTEXT
% In a parallel context this function return the CPUs or cores numer avaiable
% on the computer used for run parallel code.
%
% INPUTS
% an array contained several fields that describe the hardaware
% software enviroments of a generic computer.
%
% OUTPUTS
% The CPUs or Cores numbers of computer.
%
% SPECIAL REQUIREMENTS
% none
% Copyright © 2010-2017 Dynare Team
%
% This file is part of Dynare.
%
% Dynare is free software: you can redistribute it and/or modify
% it under the terms of the GNU General Public License as published by
% the Free Software Foundation, either version 3 of the License, or
% (at your option) any later version.
%
% Dynare is distributed in the hope that it will be useful,
% but WITHOUT ANY WARRANTY; without even the implied warranty of
% MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
% GNU General Public License for more details.
%
% You should have received a copy of the GNU General Public License
% along with Dynare. If not, see <https://www.gnu.org/licenses/>.
nCPU='';
if nargin < 2
% Determine a specific operating system or software version when necessary
% for different command (sintax, name, ...).
Environment=~ispc;
end
switch Environment
case 0 %WINDOWS OPERATING SYSTEM
OffSet=27;
SringPosition=strfind(ComputerInformations, 'Processors:');
nCPU=ComputerInformations(SringPosition+OffSet);
% We check if there are Processors/Cores more than 9.
t0=ComputerInformations(SringPosition+OffSet+1);
t1=str2num(t0);
t1=isempty(t1);
% if t1 is 0 the machine have more than 9 CPU.
if t1==0
nCPU=strcat(nCPU,t0);
end
nCPU=str2num(nCPU);
return
case 1 %LIKE UNIX OPERATING SYSTEM
nCPU=str2num(ComputerInformations);
case 2 %MAC-OS OPERATING SYSTEM
nCPU=str2num(ComputerInformations);
end