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Automatic Scheduling

GlidePath recalculates the entire schedule automatically every time you make a change that affects task timing. You do not need to click a “Calculate” button — the engine runs in the background and updates dates, float values, and critical path highlighting instantly.

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Feature Spec Reference

Module 3.4 — Float Display and Color Coding
Module 3.6 — CPM Recalculation Triggers

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What Triggers a Recalculation

GlidePath recalculates CPM after any of these changes:

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What Gets Updated

After each recalculation, GlidePath updates:
  • Task bar positions in the Gantt timeline
  • Start and Finish date columns in the task list
  • Float/slack values in the Float column (if visible)
  • Critical path highlighting (red bars for zero-float tasks)
  • Dependency line colors (red lines for critical-path links)
  • Summary task dates (rolled up from child tasks)
  • Dashboard metrics (SPI, CPI, schedule health indicators)

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Directly Scheduled Tasks

By default, tasks are scheduled As-Soon-As-Possible (ASAP), meaning the CPM engine places them at the earliest valid date given their predecessors and constraints. If you directly edit a task’s start date (by typing in the Start column), GlidePath applies an implicit Start No Earlier Than constraint at that date. This pins the task to your chosen date while still allowing CPM to push it later if a predecessor causes it to start after that date. To release a pinned task back to pure CPM scheduling:
  1. Open the Task Detail Panel (double-click the task)
  2. Set Constraint Type to As Soon As Possible
  3. Clear the constraint date if one was set

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Float Display

Float is shown in the task list when the Float column is enabled. To enable it:
  1. Click Columns in the Gantt toolbar
  2. Check Float
Float values update instantly with every recalculation:

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Summary Task Scheduling

Summary (parent) tasks do not have their own CPM-calculated dates. Their start and finish are always derived from their children:
  • Summary Start = earliest start date among all child tasks
  • Summary Finish = latest finish date among all child tasks
When a child task moves, the summary task updates to match. You cannot directly edit a summary task’s start or finish date — instead, edit the child tasks.

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Performance on Large Schedules

GlidePath is optimized to recalculate CPM in under one second for schedules with up to 500 tasks. For very large schedules (500+ tasks), recalculation may take 1-3 seconds. During recalculation, a brief loading indicator appears in the toolbar. See Performance Tips for guidance on keeping large schedules responsive.

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Next Steps