Author Archives: lparallel

The latest CLISP and ECL appear close to passing all tests, and may indeed pass on some platforms. I am not aware of any outstanding CL implementation bugs affecting lparallel besides those reported in CLISP and ECL. I am also … Continue reading →

added pdotimes optimized cognate functions and macros when they are called inside worker threads; e.g. pmap in (future (pmap …)) no longer blocks a worker

added clear-ptree-errors — for resuming after an error added clear-ptree — for recomputing from scratch improved task handling for ptrees :lparallel now in *features* after load defpun no longer transforms pfuncall forms

When an evaluation fails or is interrupted, it may be convenient to automatically kill tasks created during the evaluation. One use for this might be for debugging a set of long-running tasks. Here is a solution using alexandria’s unwind-protect-case. (defpackage … Continue reading →

Mapping It should be no surprise that arrays are faster than lists for parallel mapping. The open-coded versions of pmap and pmap-into, which are triggered when a single array is mapped to an array, are particularly fast in SBCL when … Continue reading →

pmap and pmap-into are now open-coded in the case of one vector being mapped to a vector — allows a large performance boost in some CL implementations (like SBCL) when array types are known SBCL is now able to terminate … Continue reading →

added function task-categories-running new special variable *debug-tasks-p* — setting it to false will transfer errors instead of invoking the debugger inside tasks; default is true added convenience function invoke-transfer-error for local control over debugging tasks: (task-handler-bind ((error #’invoke-transfer-error)) …) (task-handler-bind … Continue reading →

new support for fine-grained parallelism with `defpun’ new work-stealing model with lockless queues and optional spinning; enabled by default on SBCL, others default to central queue added pfind, pcount, plet-if, pfuncall fixed redundant restart in `chain’ `fulfill’ now accepts non-promises … Continue reading →

added function cancel-timeout; submit-timeout now returns a timeout object renamed emergency-kill-tasks to kill-tasks; old name is still available minor optimization to ptrees added type checks to psort arguments switched test framework to eos

added :wait option to end-kernel — blocks until the kernel has shut down (please read the documentation for end-kernel before using) bound *print-circle* to t when printing a kernel — avoids SBCL + SLIME crash when evaluating the single form … Continue reading →