# Pipetask - QuantumGraph issues **URL:** \ **Category:** Support\ **Tags:** butler\ **Created:** [August 17, 2021, 10:21pm UTC](https://www.rubin.community/t/pipetask-quantumgraph-issues/5807 "2021-08-17T22:21:32Z")\ **Posts on this page:** 6\ **Page:** 1
**Author:** ![gmegias](https://avatars.discourse-cdn.com/v4/letter/g/d07c76/32.png) [@gmegias](https://www.rubin.community/u/gmegias)\ **Post date:** [August 17, 2021, 10:21pm UTC](https://www.rubin.community/t/pipetask-quantumgraph-issues/5807/1 "2021-08-17T22:21:32Z")
Hi all, I am trying to debug a notebook that should be reproducing a file that runs successfully when run from the main RSP Terminal. My issue is when running the following code line: `pipetask run -b /project/gmegias/aos/lsst_stack/perturbations/phosimData -i refcats,LSSTComCam/raw/all,LSSTComCam/calib --instrument lsst.obs.lsst.LsstComCam --register-dataset-types --output-run ts_phosim_1151 -p comcamPipeline.yaml -d "exposure IN (4021114101151, 4021114101152)" -j 2` I tried running this line of code from the LSP terminal to see if I could get an insight on what was going on, but the following error prompts up: ``` py.warnings WARN: /opt/lsst/software/stack/stack/miniconda3-py38_4.9.2-0.6.0/Linux64/ctrl_mpexec/21.0.0-33-g1dfc228+1cc4008e43/python/lsst/ctrl/mpexec/cli/script/qgraph.py:145: UserWarning: QuantumGraph is empty qgraph = f.makeGraph(pipelineObj, args) Traceback (most recent call last): File "/opt/lsst/software/stack/stack/miniconda3-py38_4.9.2-0.6.0/Linux64/ctrl_mpexec/21.0.0-33-g1dfc228+1cc4008e43/bin/pipetask", line 29, in sys.exit(main()) File "/opt/lsst/software/stack/stack/miniconda3-py38_4.9.2-0.6.0/Linux64/ctrl_mpexec/21.0.0-33-g1dfc228+1cc4008e43/python/lsst/ctrl/mpexec/cli/pipetask.py", line 43, in main return cli() File "/opt/lsst/software/stack/conda/miniconda3-py38_4.9.2/envs/lsst-scipipe-0.6.0/lib/python3.8/site-packages/click/core.py", line 829, in __call__ return self.main(*args, **kwargs) File "/opt/lsst/software/stack/conda/miniconda3-py38_4.9.2/envs/lsst-scipipe-0.6.0/lib/python3.8/site-packages/click/core.py", line 782, in main rv = self.invoke(ctx) File "/opt/lsst/software/stack/conda/miniconda3-py38_4.9.2/envs/lsst-scipipe-0.6.0/lib/python3.8/site-packages/click/core.py", line 1259, in invoke return _process_result(sub_ctx.command.invoke(sub_ctx)) File "/opt/lsst/software/stack/conda/miniconda3-py38_4.9.2/envs/lsst-scipipe-0.6.0/lib/python3.8/site-packages/click/core.py", line 1066, in invoke return ctx.invoke(self.callback, **ctx.params) File "/opt/lsst/software/stack/conda/miniconda3-py38_4.9.2/envs/lsst-scipipe-0.6.0/lib/python3.8/site-packages/click/core.py", line 610, in invoke return callback(*args, **kwargs) File "/opt/lsst/software/stack/conda/miniconda3-py38_4.9.2/envs/lsst-scipipe-0.6.0/lib/python3.8/site-packages/click/decorators.py", line 21, in new_func return f(get_current_context(), *args, **kwargs) File "/opt/lsst/software/stack/stack/miniconda3-py38_4.9.2-0.6.0/Linux64/ctrl_mpexec/21.0.0-33-g1dfc228+1cc4008e43/python/lsst/ctrl/mpexec/cli/cmd/commands.py", line 102, in run qgraph = script.qgraph(pipelineObj=pipeline, **kwargs) File "/opt/lsst/software/stack/stack/miniconda3-py38_4.9.2-0.6.0/Linux64/ctrl_mpexec/21.0.0-33-g1dfc228+1cc4008e43/python/lsst/ctrl/mpexec/cli/script/qgraph.py", line 148, in qgraph raise RuntimeError("QuantumGraph is empty.") RuntimeError: QuantumGraph is empty. ``` If anyone has any idea of what could I be doing wrong, I would appreciate a lot your support! ---
**Author:** ![timj](https://sea2.discourse-cdn.com/flex002/user_avatar/www.rubin.community/timj/32/10_2.png) [@timj](https://www.rubin.community/u/timj)\ **Post date:** [August 18, 2021, 12:09am UTC](https://www.rubin.community/t/pipetask-quantumgraph-issues/5807/2 "2021-08-18T00:09:50Z")
Here is a discussion on empty quantum graphs that might help you. [https://pipelines.lsst.io/v/daily/middleware/faq.html?highlight=empty#how-do-i-fix-an-empty-quantumgraph](https://pipelines.lsst.io/v/daily/middleware/faq.html?highlight=empty#how-do-i-fix-an-empty-quantumgraph) Can you post a link to your `comcamPipeline.yaml` ? ---
**Author:** ![timj](https://sea2.discourse-cdn.com/flex002/user_avatar/www.rubin.community/timj/32/10_2.png) [@timj](https://www.rubin.community/u/timj)\ **Post date:** [August 18, 2021, 12:11am UTC](https://www.rubin.community/t/pipetask-quantumgraph-issues/5807/3 "2021-08-18T00:11:43Z")
> [@gmegias](#): > > exposure IN (4021114101151, 4021114101152)" Can you also run `butler query-datasets` to check that those exposures really are present in that `LSSTComCam/raw/all` collection? ---
**Author:** ![andy\_slac](https://sea2.discourse-cdn.com/flex002/user_avatar/www.rubin.community/andy_slac/32/1726_2.png) [@andy\_slac](https://www.rubin.community/u/andy_slac)\ **Post date:** [August 18, 2021, 1:42am UTC](https://www.rubin.community/t/pipetask-quantumgraph-issues/5807/4 "2021-08-18T01:42:35Z")
I can only see exposures 4021123101151 and 4021123101152 in `LSSTComCam/raw/all` collection . ---
**Author:** ![timj](https://sea2.discourse-cdn.com/flex002/user_avatar/www.rubin.community/timj/32/10_2.png) [@timj](https://www.rubin.community/u/timj)\ **Post date:** [August 18, 2021, 3:25pm UTC](https://www.rubin.community/t/pipetask-quantumgraph-issues/5807/5 "2021-08-18T15:25:14Z")
If this is phosim on-sky data then not running `butler define-visits` is a possibility (that is covered in the FAQ). ---
**Author:** ![gmegias](https://avatars.discourse-cdn.com/v4/letter/g/d07c76/32.png) [@gmegias](https://www.rubin.community/u/gmegias)\ **Post date:** [August 18, 2021, 5:18pm UTC](https://www.rubin.community/t/pipetask-quantumgraph-issues/5807/6 "2021-08-18T17:18:34Z")
I think that was the issue. The problem is now solved. See follow-up issue in: > [@Issue running pipetask from RSP notebook](http://www.rubin.community/t/issue-running-pipetask-from-rsp-notebook/5808): > > When running the following code line: pipetask run -b /project/gmegias/aos/lsst\_stack/perturbations/test/phosimData -i refcats,LSSTComCam/raw/all,LSSTComCam/calib --instrument lsst.obs.lsst.LsstComCam --register-dataset-types --output-run ts\_phosim\_9006001 -p comcamPipeline.yaml -d “exposure IN (4021123106001, 4021123106002)” -j 2 In RSP notebook i get the following error: [Errno 2] No such file or directory: ‘pipetask run -b /project/gmegias/aos/lsst\_stack/perturbations/test/phosimData -i re…