Thanks Chris, this was good information. On 5/8/12 1:48 AM, "Mattmann, Chris A" <[email protected]> wrote:
> Hey Cam, > > Thanks, some comments below: > > On May 7, 2012, at 8:26 PM, Cameron Goodale wrote: > >> Hey Mike and Sheryl, >> >> Mike was asking me for some similar advice and I plain ran outta talent on >> this topic. From what I can tell Mike would like to run his python scripts >> on Resource Manager without the need for setting up Workflow or PGE. >> >> At the time I hadn't really thought through all the configuration files >> needed, but having stewed on it I thought I should reply. Now my current >> SnowDS implementation is to have the Workflow Task reference a CAS-PGE >> (which contains the execution block for my python program i want to run). >> Then the Workflow is merely configured to farm the jobs out to the >> Resource Manager. >> >> Here is a list of questions that I have started to wonder about with Mike's >> help, any answers would be appreciated: >> >> 1. Can Resource Manager + Batchstubs be used without any additional OODT >> components? >> > > Yep one way to see this in action is to run the > org.apache.oodt.cas.resource.tools.JobSubmitter > tool by cd'ing into a resource manager deployment (let's assume > /usr/local/resmgr/bin) and then > running: > > java -Djava.ext.dirs=../lib org.apache.oodt.cas.resource.tools.JobSubmitter > > Which produces: > > JobSubmitter --rUrl <resource mgr url> [options] > --file <job file path> > [--dir <job file dir path>] > > This will let you submit a resource manager XML "job file" looks like this: > > http://svn.apache.org/repos/asf/oodt/trunk/resource/src/main/resources/example > s/jobs/exJob.xml > > Key parameters there are: > > Name - the human readable name of the job > Id - the id of the job > Instance Class - the JobInstance > Input Class - specification for how to read/write input for the job, with > properties > > That being said, interfacing with the resource manager at this level would be > a lot harder > than simply running workflows, which yes, is the more developer/user friendly > interface > for specifying tasks to run, which get turned into jobs in resource manager > ville. > > >> 2. Is PGE required to run/wrap non-Java programs so they can run within >> Resource Manager? > > Well, PGE doesn't directly run in Resource Manager. All workflow tasks are > submitted > to Resource Manager using the TaskJob, and TaskJobInput constructs: > > http://s.apache.org/I6S > http://s.apache.org/8F1 > > >> >> Closing comments to Mike: >> >> If you are planning to use OODT for data management, it >> is initially very tempting to only setup and configure the minimal set of >> components because you will feel productive and it feels like progress is >> being made. Trust me I know since I was in your shoes about 6 months ago >> when trying to get some image processing IDL code to run and I bably needed >> to see progress (notice I didn't use the works "make progress"). Because I >> wanted to use (what I thought was) the "easier" solution I ended up >> hardcoding paths to resources my python code needed in the code instead of >> passing the parameters into the code in the first place. This worked >> reasonably well as long as everything stayed the same....but then it didn't >> so I had to re-visit my "easier" setup and fix it. >> Recently I have been working to undo my mistakes and python has been >> very forgiving, but the best part was that all the strange and mystic >> Workflow setups and PGEConfig.xml files actually started to make a whole >> lot more sense. I am now able to configure and stand up a complete >> workflow config, then jump into PGEConfig and get the input parameters to >> my python code. This means if the input files i need to process changes I >> don't need to change my python code, instead I can merely pass in a >> different set of parameters into the workflow and they will persist to my >> wrapped python. >> In short I know that combing through all the xml config is tough, >> especially when things are not working as quickly as you would like. I >> understand how defeated and frustrating it can be to have the component >> fail and just feel lost, not knowing what is causing the problem. I know >> the documentation isn't perfect and sometimes it is missing altogether, but >> the people that are on this list will bend over backwards to help you >> understand (some will even share their config files with line-by-line >> comments included at no extra charge ;) >> >> Thank you Sheryl for being awesome and helpful (you always are). Mike keep >> the questions coming and I will be sure to add in my $0.02 when I am able >> to. > > +1. > > Cheers, > Chris > >> >> On Mon, May 7, 2012 at 5:09 PM, Sheryl John <[email protected]> wrote: >> >>> Hi Mike, >>> >>> Yup, you can run your python scripts, java programs etc. from CAS-PGE which >>> is used with the Workflow Manager. Check out this cas-pge guide [1] and the >>> other wiki pages related to workflow. >>> >>> You can use Resource Manager to run tasks sent from the Workflow Manager. >>> I've recently started testing this but there are others on the list who can >>> guide you more on the Resource Manager. >>> >>> HTH! >>> >>> Sheryl >>> >>> [1] https://cwiki.apache.org/OODT/cas-pge-learn-by-example.html >>> >>> >>> On Mon, May 7, 2012 at 3:43 PM, Iwunze, Michael C (GSFC-4700)[NOAA-JPSS] < >>> [email protected]> wrote: >>> >>>> >>>> I have two questions, I am able to run the Resource Manager with no >>>> issues. I have some python scripts and possibly some other programs I >>>> would like to run using the Resource Manager. From what I know so far I >>>> believe the cas-pge component needs to be used in conjunction with the >>>> Resource Manager and is used as a wrapper program for running my scripts. >>>> Can someone give me more information on how this can be accomplished or >>> are >>>> there any examples to view? >>>> >>>> I would also like to be able to utilize the Job Scheduler, Monitor and >>>> Job queue classes that are part of the Resource Manager. I can't find any >>>> examples of how they are used anywhere. And if examples do exist can >>>> someone point me in the right direction or give me more information on >>> this? >>>> >>>> Thanks >>>> >>>> Mike >>> >>> >>> >>> >>> -- >>> -Sheryl >>> > > > ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ > Chris Mattmann, Ph.D. > Senior Computer Scientist > NASA Jet Propulsion Laboratory Pasadena, CA 91109 USA > Office: 171-266B, Mailstop: 171-246 > Email: [email protected] > WWW: http://sunset.usc.edu/~mattmann/ > ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ > Adjunct Assistant Professor, Computer Science Department > University of Southern California, Los Angeles, CA 90089 USA > ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ >
