Release Notes 24.03

GPU Support

  • Ampere, and Hopper GPUs are supported.

  • Multiple GPUs are not yet supported.

Breaking Changes

  • Removed task priorities, vehicle priorities, drop infeasible tasks and mandatory task.

  • Adding data deprecating cost_matrix in data format for cost and time matrix.

Bug Fixes

  • Report cost and arrival stamps in double precision to eliminate floating point overflow.

  • Restrict types of data that can be unpickled.

  • Fix a bug in single route PDP use case.

  • Fix a bug in handling vehicle order match constraint.

  • Fix bugs in repair solutions for min vehicles constraint.

  • Handle shared memory allocation failure gracefully.

Documentation Updates

  • Update doc with SAK changes.

New Features

  • Add warm up + internal timing to solver.

  • Support multiple break dimensions.

  • Implement vehicle usage cost in the objective.

  • Add cuOpt validator support to managed and self-hosted service.

Improvements

  • Always return request id from self-hosted endpoint to align with managed service.

  • Improved logging for cuOpt microservice.

  • Handle solutions with different number of routes in EAX.

  • Adds response model for API endpoints.

  • Reduce overhead time in microservice ETL.

  • Handle shared memory issue gracefully in VRP moves.

  • Improve solver runtime checks.

  • Improve solution quality for vehicle order match constraints using a separate dimension.

  • Implement ordered crossover.

Release Notes 23.10

Breaking Changes

  • Change the cuOpt endpoint to expect an optimization data structure rather than a dictionary.

  • Remove penalty, precedence, Objectives : (vehicle, cumul_package_time, cumul_earliest_diff), max_slack, max_lateness_per_vehicle, solution_strategy, initial_solution_strategy, solution_scope, number_of_climbers, number_of_iterations.

  • Deprecate task/order priorities, use new feature prizes instead.

Bug Fixes

  • Fix an out of bounds error in drop infeasible task workflow.

  • Fix a bug in the engine when the route size is equal to the route_size_limit.

Documentation Updates

  • Add docs for building a user’s own thin client.

  • Add a user guide for breaking changes.

New Features

  • Implement total duration objective which includes both drive times and wait times.

  • Implement prize collection.

Improvements

  • Improve logic for time budgeting for initial solution generation.

  • Graceful exit when the shared memory limit is exceeded.

  • Add a check for client version compatibility to the server.

  • Improve the quality of routes and the scalability for TSP.

  • Improve file handling in the client for the cuOpt managed service.

  • Documentation updates.