When TaskRegion::BuildGraph is called, it connects regional tasks across all of the task lists in TaskRegion::task_lists but does not appear to do anything with the task lists contained in TaskList::sublists. As a result, the BiCGSTAB solver hangs for more than one partition since the residual is zeroed out by one task for a reduction before other tasks have the chance to check the residual in their completion task in the previous iteration.
I will try to take a look at how to fix this next week.
When
TaskRegion::BuildGraphis called, it connects regional tasks across all of the task lists inTaskRegion::task_listsbut does not appear to do anything with the task lists contained inTaskList::sublists. As a result, the BiCGSTAB solver hangs for more than one partition since the residual is zeroed out by one task for a reduction before other tasks have the chance to check the residual in their completion task in the previous iteration.I will try to take a look at how to fix this next week.