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function [jobId, taskId] = parallelDriver(varargin)
% PARALLELDRIVER
%
% Author:: Andrea Vedaldi
% AUTORIGHTS
% Copyright (C) 2008-09 Andrea Vedaldi
%
% This file is part of the VGG MKL Class and VGG MKL Det code packages,
% available in the terms of the GNU General Public License version 2.
jobopts.parallelize = 0 ;
jobopts.jobId = NaN ;
jobopts.taskId = NaN ;
jobopts.jobDir = '' ;
jobopts.needsJava = false ;
jobopts.waitJobs = [] ;
jobopts.numNodes = 10 ;
jobopts.freeMemMb = 1900 ;
jobopts = vl_argparse(jobopts, varargin{:}) ;
% waiting list
job_qsub_opts = [] ;
if ~isempty(jobopts.waitJobs)
jobList = sprintf('%d,', jobopts.waitJobs) ;
job_qsub_opts = [job_qsub_opts ...
' -hold_jid ' jobList(1:end-1)] ;
end
if jobopts.freeMemMb > 0
job_qsub_opts = [job_qsub_opts ...
sprintf(' -l mem_free=%gm', jobopts.freeMemMb) ...
sprintf(' -l vf=%gm', jobopts.freeMemMb)] ;
end
% get who is calling me
drop = dbstack ;
callingMFile = drop(2).name ;
clear drop ;
taskId = jobopts.taskId ;
jobId = jobopts.jobId ;
% --------------------------------------------------------------------
% If not parallel
% --------------------------------------------------------------------
if ~ jobopts.parallelize
fprintf('>>>>> %s <<<<<\n', callingMFile) ;
return ;
end
% --------------------------------------------------------------------
% If parallel, and taskId is specified
% --------------------------------------------------------------------
if ~isnan(jobopts.taskId)
return ;
end
% --------------------------------------------------------------------
% If parallel, and taskId is not specified
% --------------------------------------------------------------------
tic ;
outputDir = fullfile(jobopts.jobDir, sprintf('j$JOB_ID-%s', callingMFile)) ;
stdErrPath = fullfile(outputDir, 'err$TASK_ID.txt') ;
stdOutPath = fullfile(outputDir, 'out$TASK_ID.txt') ;
%stdErrPath = fullfile(jobopts.jobDir, 'err$JOB_ID-$TASK_ID.txt') ;
%stdOutPath = fullfile(jobopts.jobDir, 'out$JOB_ID-$TASK_ID.txt') ;
matCmd = sprintf(['jobName=sprintf(''j%%d-%s'',sgeJobId);' ...
'jobPath=fullfile(''%s'', jobName);' ...
'load(fullfile(jobPath,''conf''));' ...
'disp(conf);' ...
'%s(conf,''parallelize'',1,''jobId'',sgeJobId,' ...
' ''taskId'',sgeTaskId,''jobDir'',''%s'');'], ...
callingMFile, ...
jobopts.jobDir, ...
callingMFile, ...
jobopts.jobDir) ;
if jobopts.needsJava
scriptName = 'qsub_matlab_java.sh' ;
else
scriptName = 'qsub_matlab.sh' ;
end
cmd = sprintf(['qsub ' ...
'-h ' ...
'-t 1-%d ' ...
'-o ''%s'' ' ...
'-e ''%s'' ' ...
'-N ''%s'' ' ...
' %s ' ...
'%s "%s"'], ...
jobopts.numNodes, ...
stdOutPath, stdErrPath, ...
callingMFile, ...
job_qsub_opts, ...
scriptName, ...
matCmd) ;
[s,w] = system(cmd) ;
if s ~= 0
fprintf('Offending command:\n%s\n\n', cmd) ;
error(w) ;
end
tmp = regexp(w, ' ([0-9]*)\.', 'tokens') ;
jobId = sscanf(tmp{1}{1}, '%d') ;
taskId = NaN ;
% now can setup actual output directory
jobName = sprintf('j%d-%s', jobId, callingMFile) ;
outputDir = fullfile(jobopts.jobDir, jobName) ;
ensuredir(outputDir) ;
%ensuredir(fullfile(outputDir, 'locks')) ;
confPath = fullfile(outputDir, 'conf.mat') ;
evalin('caller', sprintf('ssave(''%s'', ''conf'')', confPath)) ;
fid = fopen(fullfile(outputDir, 'SGE_SUB_TIME'),'w') ;
fwrite(fid, datestr(now)) ;
fclose(fid) ;
fid = fopen(fullfile(outputDir, 'SGE_CMD'),'w') ;
fwrite(fid, cmd) ;
fclose(fid) ;
fid = fopen(fullfile(outputDir, 'SGE_ID'),'w') ;
fwrite(fid, tmp{1}{1}) ;
fclose(fid) ;
fprintf('Spawning job array ''%s'' with %d instances.\n', ...
outputDir, jobopts.numNodes) ;
fprintf('\tSGE job id: %d\n', jobId) ;
fprintf('\tqsub additional options: ''%s''.\n', job_qsub_opts) ;
% remove hold
cmd = sprintf('qalter -h U %d', jobId) ;
[s,w] = system(cmd) ;
if s ~= 0
fprintf('Offending command:\n%s\n\n', cmd) ;
error(w) ;
end
% this will ensure that each job directory has a different time stamp
%pause(max(1.5 - toc, 0)) ;
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