Issues

• --mpiio.useStridedDatatype with -D: stonewalling does not work and IOR prints an incorrect bandwidth

  hpc/ior#551 · Filter by author sihara opened on Oct 8, 2026

• IOR summary shows -nan values when MaxTimeDuration is reached before all iterations are completed.

  hpc/ior#542 · Filter by author tripougnif opened on Aug 31, 2026

• GPU Direct Storage abstraction and AMD hipFile support

  hpc/ior#541 · Filter by author potatogim opened on Jul 6, 2026

• I’m testing GPFS (Spectrum Scale) with IOR. What are the optimal parameters to maximize aggregate throughput?

  hpc/ior#538 · Filter by author AdaAibaby opened on May 27, 2026

• Add task to processor mapping to output

  hpc/ior#534 · Filter by author jschwartz-cray opened on Mar 5, 2026

• IOPS mismatch with [Max|Min|Mean](OPS)

  hpc/ior#532 · Filter by author santos-lucas opened on Feb 10, 2026

• Build of 4.0.0 fails with GCC 15

  hpc/ior#530 · Filter by author gruenich opened on Sep 16, 2025

• why "ERROR: block size must be a multiple of access size"

  hpc/ior#520 · Filter by author roblatham00 opened on May 2, 2025
  1

• Why does the performance of Tree creation and removal decrease after adding parameter -u ?

  hpc/ior#513 · Filter by author pyworker opened on Mar 12, 2025
  3

• mdtest: Add summaryFormat:JSON and output file: summaryFile support in the commnd line

  hpc/ior#509 · Filter by author kdhaduk81 opened on Feb 11, 2025

• Syntax Error with IOR Benchmarks Parameters

  documentationGreat First Contribution
  hpc/ior#499 · Filter by author kaaviyau opened on Sep 18, 2024
  1

• Excessive file fragmentation on parallel file creation

  hpc/ior#496 · Filter by author bolausson opened on Aug 15, 2024
  2

• [macOS 14.5]ld: unknown options: --enable-new-dtags -rpath=check/lib64 --enable-new-dtags -rpath=check/lib64

  hpc/ior#494 · Filter by author MartinJewski opened on Jun 21, 2024
  1

• Build issues for GPU Direct Storage (GDS) enabled IOR

  hpc/ior#486 · Filter by author casparvl opened on May 6, 2024
  2

• Summary OPs wrong calculation

  hpc/ior#478 · Filter by author mirimirima opened on Feb 21, 2024

• [suggestion] multiple output-formats

  hpc/ior#476 · Filter by author wszoecs opened on Feb 14, 2024
  2

• cryptic error message when file is missing

  hpc/ior#470 · Filter by author jolivier23 opened on Oct 16, 2023
  1

• numTasks - bug still in the documentation

  hpc/ior#468 · Filter by author lalilalalalu opened on Aug 29, 2023

• aio reads broken?

  hpc/ior#461 · Filter by author paf0186 opened on May 14, 2023
  4

• configure: error: --with-lustre was given, <lustre/lustre_user.h> not found

  hpc/ior#460 · Filter by author mdable2 opened on Apr 25, 2023
  2

• IOR HDF5 backend no longer works

  hpc/ior#456 · Filter by author shanedsnyder opened on Feb 28, 2023
  4

• There is no need to install lib/libaiori.a without corresponding headers

  hpc/ior#454 · Filter by author yurivict opened on Jan 20, 2023

• HDF5 API: Unable to delete file when using HDF5 1.12.1

  hpc/ior#443 · Filter by author jwsblokland opened on Nov 18, 2022

• make s3 aiori that uses the official s3 c api

  enhancement
  hpc/ior#442 · Filter by author glennklockwood opened on Nov 3, 2022
  8

• [suggestion] Cleanup and install headers

  hpc/ior#432 · Filter by author mdorier opened on Aug 15, 2022
  1