Changes between Version 32 and Version 33 of Public/User_Guide/Batch_system

Timestamp:

May 4, 2020, 3:24:22 PM (4 years ago)

Author:

Zia Ul Huda

Comment:

Added information about slurm_workflow library.

Public/User_Guide/Batch_system

@@ -451 +451 @@
 }}}
 If a job exits earlier than the allocated time asked by the user, the corresponding reservation for this job is deleted automatically and the resources become available for the other jobs. However, users should be careful with the requested time when submitting workflows as the larger time values can delay the scheduling of the workflows depending on the situation of the resources.
+
+=== {{{slurm_workflow}}} Library ===
+
+We have developed a library that developers can use to change the reservation beginning times or dependency type of the dependent jobs in a workflow. This library is called {{{slurm_workflow}}}. The library has two functions.
+
+The first function moves all the reservations of the remaining workflow jobs to an earlier time when the workflow is created using {{{--delay}}} switch.
+{{{
+/*
+IN:    number seconds to move
+OUT:   0 successful, non zero unsuccessful. set slurm_wf_error.
+*/
+int slurm_wf_move_all_res(uint32_t t);
+}}}
+
+The second function changes the dependencies type of all jobs dependent on the current job from {{{afterok:job_id}}} to {{{after:job_id}}}.
+{{{
+/*
+OUT: 0 successful, error no otherwise.
+*/
+
+int slurm_change_dep();
+}}}
+
+Call the above function to change all {{{afterok:$(SLURM_JOBID)}}} dependencies into {{{after:$(SLURM_JOBID)}} dependencies. This enables the jobs in workflow eligible for allocation by Slurm.
+
+The header file can be included using {{{#include "slurm/slurm_workflow.h"}}} and should be linked using {{{-lslurm_workflow}}}.
+
 
 == Information on past jobs and accounting ==