Cap xdist workers per GPU to avoid oversubscription#805
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Extends the wheel test continuous and nightly release workflows to run against TheRock 7.13.0 and TheRock latest builds in addition to ROCm 7.2.0.
Consolidate the ROCm wheel RUNPATH strategy in jaxlib/rocm/rocm_rpath.bzl and embed it at link time via _WHEEL_RPATHS instead of a post-build patchelf step (applied under rocm_path_type=link_only, which the release wheel config sets). A single wheel resolves ROCm libs across TheRock pip wheels (1- and 2-deep $ORIGIN layouts), TheRock tarballs under /opt/rocm-<ver>, and legacy /opt/rocm; the loader silently skips $ORIGIN entries whose directories don't exist. Also pin the hermetic build ROCm to the image's TheRock version via ROCM_DISTRO_URL so the wheel's ROCm SONAMEs match the runtime image.
…n /opt/rocm-less images
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On single-GPU ROCm runners, xdist can spawn more workers than can
effectively utilize the available device. This causes multiple workers
to contend for the same GPU.
Changes
num_processestogpu_count * max_workers_per_gpu.