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AbortKernels[]

aborts evaluations running in all parallel subkernels.

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AbortKernels

AbortKernels[]

aborts evaluations running in all parallel subkernels.

Details

  • AbortKernels[] attempts to put subkernels in a state suitable for new evaluations and verifies communications links to them. Any subkernel that does not respond is removed from the list of available subkernels as given by Kernels[].

Examples

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Basic Examples  (1)

Wolfram Language code: AbortKernels[]

Applications  (2)

Scheduled evaluations that are no longer needed can be aborted with AbortKernels:

Wolfram Language code: evs = Composition[ParallelSubmit, FactorInteger] /@ Range[10 ^ 20 + 1, 10 ^ 20 + 4]
Wolfram Language code: {res, ev, evs} = WaitNext[evs];res
Wolfram Language code: AbortKernels[];

Find such that is prime, scheduling one search loop for each kernel:

Wolfram Language code: n = 1;primes = {};SetSharedVariable[n, primes]; evs = Table[ParallelSubmit[While[True, With[{n = n++}, If[PrimeQ[n! + 1], AppendTo[primes, n]]]]], {$KernelCount}];

Run them until manually aborted, and clean up by aborting all parallel kernels:

Wolfram Language code: PrintTemporary[Dynamic[{n, primes}]]; CheckAbort[WaitAll[evs], AbortKernels[]]; {n, primes}

Properties & Relations  (2)

ParallelTry is essentially implemented in terms of WaitNext and AbortKernels:

Wolfram Language code: parallelTry[f_, args_List] := Module[{evs, ev, res = $Failed}, evs = Composition[ParallelSubmit, f] /@ args; While[res === $Failed && Length[evs] > 0, {res, ev, evs} = WaitNext[evs]]; AbortKernels[]; res ]
Wolfram Language code: parallelTry[FactorInteger, Range[10 ^ 20 + 1, 10 ^ 20 + $KernelCount]]

If aborting fails, kernels can often be closed and reopened:

Wolfram Language code: Kernels[]
Wolfram Language code: CloseKernels[]
Wolfram Language code: LaunchKernels[%]
Wolfram Research (2008), AbortKernels, Wolfram Language function, https://reference.wolfram.com/language/ref/AbortKernels.html.

Text

Wolfram Research (2008), AbortKernels, Wolfram Language function, https://reference.wolfram.com/language/ref/AbortKernels.html.

CMS

Wolfram Language. 2008. "AbortKernels." Wolfram Language & System Documentation Center. Wolfram Research. https://reference.wolfram.com/language/ref/AbortKernels.html.

APA

Wolfram Language. (2008). AbortKernels. Wolfram Language & System Documentation Center. Retrieved from https://reference.wolfram.com/language/ref/AbortKernels.html

BibTeX

@misc{reference.wolfram_2026_abortkernels, author="Wolfram Research", title="{AbortKernels}", year="2008", howpublished="\url{https://reference.wolfram.com/language/ref/AbortKernels.html}", note=[Accessed: 13-June-2026]}

BibLaTeX

@online{reference.wolfram_2026_abortkernels, organization={Wolfram Research}, title={AbortKernels}, year={2008}, url={https://reference.wolfram.com/language/ref/AbortKernels.html}, note=[Accessed: 13-June-2026]}