SST: invalidate NFS dcache between readContactInfo retries - #5010
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A failed fopen() of the writer's contact file populates the NFS client's negative dcache; subsequent fopen() calls return NULL from that cache for up to acdirmax (~30s) even after the writer creates the file. Force a readdir() on the parent directory before each retry to invalidate the stale entry. Cost is amortized into the existing 100ms sleep.
pnorbert
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Apr 21, 2026
eisenhauer
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April 21, 2026 01:14
eisenhauer
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Apr 22, 2026
SST: invalidate NFS dcache between readContactInfo retries (cherry picked from commit a616d28)
eisenhauer
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Apr 22, 2026
…-5010 Backport #5010 to release_212
vicentebolea
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Apr 29, 2026
* origin/release_212: update bpcmp test output Fix printing double values in bpls min/max and the Min and Max strings of the io.AvailableVariables() result map/dictionary. Note: %g in printf and cout << doublevar in C++ renders 6 significant digits by default and a value like 130255.32345 is printed as 130255, looking like an integer. Now we print 1.302553e+05. In case of bpls, min/max for small values (-10000, 10000) are still printed with %g, but outside that they are printed with %e. Bump version to v2.12.1 Merge pull request #5022 from eisenhauer/cxi-slingshot-error-msg Merge pull request #5015 from rtobar/mgard-lossless-type-parameter Merge pull request #5010 from eisenhauer/sst-nfs-dcache-fix Merge pull request #5008 from ordinary-slim/patch-1 vectorize min/max with SIMD for float, double, and integer types (#4985) dill 2026-04-17 (9d32c1df)
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A failed fopen() of the writer's contact file populates the NFS client's negative dcache; subsequent fopen() calls return NULL from that cache for up to acdirmax (~30s) even after the writer creates the file. Force a readdir() on the parent directory before each retry to invalidate the stale entry. Cost is amortized into the existing 100ms sleep.