only set maxparallel for jax extension itself

[boegel]

(created using eb --new-pr)

requires easybuilders/easybuild-framework#3811 to work as intended

[boegel]

Test report by @boegel
SUCCESS
Build succeeded for 1 out of 1 (1 easyconfigs in total)
node3531.doduo.os - Linux RHEL 8.2, x86_64, AMD EPYC 7552 48-Core Processor (zen2), Python 3.6.8
See https://gist.github.com/36889b2883fa958a2f225baff0045543 for a full test report.

edit: tested on top of easybuilders/easybuild-framework#3811

[verdurin]

@boegelbot please test @ generoso
EB_ARGS="--include-easyblocks-from-pr 3811"

[verdurin]

Ah, framework, not easyblocks...

[boegelbot]

@verdurin: Request for testing this PR well received on login1

PR test command 'EB_PR=13851 EB_ARGS="--include-easyblocks-from-pr 3811" /opt/software/slurm/bin/sbatch --job-name test_PR_13851 --ntasks=4 ~/boegelbot/eb_from_pr_upload_generoso.sh' executed!

• exit code: 0
• output:

Submitted batch job 6891

Test results coming soon (I hope)...

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