** Changed in: rocfft (Ubuntu)
Status: New => In Progress
** Changed in: rocfft (Ubuntu)
Assignee: (unassigned) => Igor Luppi (igorluppi)
** Description changed:
[ Impact ]
- * rocFFT 7.2.4 (library version 1.0.36) fixes three correctness issues
present
- in 7.1.1:
+ * rocFFT 7.2.4 (library version 1.0.36) fixes three correctness issues
present
+ in 7.1.1:
- - A potential division-by-zero crash when constructing FFT plans using
- dimensions of length 1. Affected callers would see a hard crash or
- undefined behaviour at plan creation time rather than a clean error.
+ - A potential division-by-zero crash when constructing FFT plans using
+ dimensions of length 1. Affected callers would see a hard crash or
+ undefined behaviour at plan creation time rather than a clean error.
- - Incorrect result scaling on multi-device transforms. Applications using
- rocFFT across multiple GPUs could silently produce wrong numerical
- results without any error being raised.
+ - Incorrect result scaling on multi-device transforms. Applications using
+ rocFFT across multiple GPUs could silently produce wrong numerical
+ results without any error being raised.
- - Broken callbacks on multi-device transforms. Custom load/store callbacks
- registered by the caller were not being invoked correctly when the
- transform spanned multiple devices, leading to silent data corruption
- for any application relying on that feature.
+ - Broken callbacks on multi-device transforms. Custom load/store callbacks
+ registered by the caller were not being invoked correctly when the
+ transform spanned multiple devices, leading to silent data corruption
+ for any application relying on that feature.
- * Additionally, two performance improvements are included: removal of an
- unnecessary global transpose from MPI 3D multi-GPU pencil decompositions,
- and enablement of the same optimisation for single-process multi-GPU
- transforms. These reduce latency and memory traffic for HPC workloads
- using distributed FFTs.
+ * Additionally, two performance improvements are included: removal of an
+ unnecessary global transpose from MPI 3D multi-GPU pencil decompositions,
+ and enablement of the same optimisation for single-process multi-GPU
+ transforms. These reduce latency and memory traffic for HPC workloads
+ using distributed FFTs.
- * Without this update, users on resolute running multi-GPU or length-1
- FFT workloads may experience crashes, silent wrong results, or missed
- callbacks. The fixes are present only in the 7.2.x upstream branch and
- cannot be cherry-picked without pulling in the full release.
+ * Without this update, users on resolute running multi-GPU or length-1
+ FFT workloads may experience crashes, silent wrong results, or missed
+ callbacks. The fixes are present only in the 7.2.x upstream branch and
+ cannot be cherry-picked without pulling in the full release.
- * Reverse dependencies: librocfft-dev (headers only); no other Ubuntu
- archive package links against librocfft0 at this time.
+ * Reverse dependencies: librocfft-dev (headers only); no other Ubuntu
+ archive package links against librocfft0 at this time.
[ Test Plan ]
- 1. Build:
- - dpkg-buildpackage -S succeeds (source package builds cleanly).
- - dpkg --compare-versions 7.2.4-0ubuntu1 gt 7.1.1-0ubuntu1 returns true.
- - No symbols file is shipped (library uses a version script to restrict
- exported symbols to the rocfft_ prefix); ABI was verified with abidiff:
- abidiff librocfft.so.0.1 (7.1.1) vs librocfft.so.0.1 (7.2.4)
- → exit code 0, no output. SOVERSION unchanged at 0.
+ 1. Build:
+ - dpkg-buildpackage -S succeeds (source package builds cleanly).
+ - dpkg --compare-versions 7.2.4-1~exp1 gt 7.1.1-0ubuntu1 returns true.
+ - No symbols file is shipped (library uses a version script to restrict
+ exported symbols to the rocfft_ prefix); ABI was verified with abidiff:
+ abidiff librocfft.so.0.1 (7.1.1) vs librocfft.so.0.1 (7.2.4)
+ → exit code 0, no output. SOVERSION unchanged at 0.
- 2. Installability:
- - apt install librocfft0 librocfft-dev succeeds.
- - No reverse dependencies require a rebuild.
+ 2. Installability:
+ - apt install librocfft0 librocfft-dev succeeds.
+ - No reverse dependencies require a rebuild.
- 3. Autopkgtest (test: librocfft0-tests):
- Full run against ppa:igorluppi/rocfft-7.2.3, LXD rocm-gpu profile,
- Ubuntu resolute, amd64 (2026-06-01):
+ 3. Autopkgtest (test: librocfft0-tests):
+ Full run against ppa:igorluppi/rocfft-7.2.3, LXD rocm-gpu profile,
+ Ubuntu resolute, amd64 (2026-06-01):
- Number of successful tests: 95436
- Number of skipped tests: 120356
- Number of runtime issues: 0
- 2 FAILED TESTS
- Test suite took 3 hours 18 minutes
+ Number of successful tests: 95436
+ Number of skipped tests: 120356
+ Number of runtime issues: 0
+ 2 FAILED TESTS
+ Test suite took 3 hours 18 minutes
- half precision max l-inf epsilon: 0.000746231
- single precision max l-inf epsilon: 0.0391119
- double precision max l-inf epsilon: 4.58786e-16
+ half precision max l-inf epsilon: 0.000746231
+ single precision max l-inf epsilon: 0.0391119
+ double precision max l-inf epsilon: 4.58786e-16
- autopkgtest summary:
- librocfft0-tests FAIL non-zero exit status 1
+ autopkgtest summary:
+ librocfft0-tests FAIL non-zero exit status 1
- The 2 failures are GPU out-of-memory conditions on extreme test sizes
- (buffer requirements of 1.5–2.1 GB), not correctness failures:
- - pow2_1D complex forward len 268435456, single, batch 1 → 2.1 GB
- - pow5_1D complex forward len 48828125, single, batch 4 → 1.56 GB
+ The 2 failures are GPU out-of-memory conditions on extreme test sizes
+ (buffer requirements of 1.5–2.1 GB), not correctness failures:
+ - pow2_1D complex forward len 268435456, single, batch 1 → 2.1 GB
+ - pow5_1D complex forward len 48828125, single, batch 4 → 1.56 GB
- These failures are non-deterministic (different tests fail per run due
- to random seed and GPU memory state) and predate this version bump:
- journalctl on the test machine shows rocfft-test OOM-killed by the
- kernel on May 19 and May 26 (anon-rss ~22 GB) during 7.1.x testing.
+ These failures are non-deterministic (different tests fail per run due
+ to random seed and GPU memory state) and predate this version bump:
+ journalctl on the test machine shows rocfft-test OOM-killed by the
+ kernel on May 19 and May 26 (anon-rss ~22 GB) during 7.1.x testing.
- A targeted re-run of the previously failing tests with --gtest_filter
- passed cleanly: 20/20, 0 failures (run: 2026-05-29, 8m 54s, PASS).
+ A targeted re-run of the previously failing tests with --gtest_filter
+ passed cleanly: 20/20, 0 failures (run: 2026-05-29, 8m 54s, PASS).
[ Where problems could occur ]
- * FFT correctness regression: if the upstream fixes for multi-device
- scaling or callbacks introduced a new bug, applications running
- multi-GPU transforms could produce wrong numerical results. Symptom:
- output values differ from single-GPU reference or from FFTW, detectable
- by the accuracy test suite.
+ * FFT correctness regression: if the upstream fixes for multi-device
+ scaling or callbacks introduced a new bug, applications running
+ multi-GPU transforms could produce wrong numerical results. Symptom:
+ output values differ from single-GPU reference or from FFTW, detectable
+ by the accuracy test suite.
- * Plan creation regression: if the division-by-zero fix interacted badly
- with other plan construction paths, rocfft_plan_create could return an
- unexpected error status or crash for previously working problem sizes.
- Symptom: applications fail at plan creation with a non-zero return code.
+ * Plan creation regression: if the division-by-zero fix interacted badly
+ with other plan construction paths, rocfft_plan_create could return an
+ unexpected error status or crash for previously working problem sizes.
+ Symptom: applications fail at plan creation with a non-zero return code.
- * Callback regression: if the multi-device callback fix broke the
- single-device callback path, applications using load/store callbacks
- would see their callback never invoked or invoked with wrong arguments.
- Symptom: silent wrong output in callback-dependent code paths.
+ * Callback regression: if the multi-device callback fix broke the
+ single-device callback path, applications using load/store callbacks
+ would see their callback never invoked or invoked with wrong arguments.
+ Symptom: silent wrong output in callback-dependent code paths.
- * ABI break: although abidiff reports no changes, a missed symbol removal
- would manifest as an immediate SIGILL or undefined-symbol error when
- loading the library. SOVERSION is unchanged so the package manager will
- not flag this; it would only appear at runtime.
+ * ABI break: although abidiff reports no changes, a missed symbol removal
+ would manifest as an immediate SIGILL or undefined-symbol error when
+ loading the library. SOVERSION is unchanged so the package manager will
+ not flag this; it would only appear at runtime.
[ Other Info ]
- * ABI: abidiff 7.1.1 → 7.2.4 reports no changes (exit 0, no output).
- SOVERSION unchanged at 0 (librocfft.so.0). No debian/*.symbols file;
- symbol visibility is controlled by a version script (patch
- Add-version-script-to-control-exposed-symbols.patch).
+ * ABI: abidiff 7.1.1 → 7.2.4 reports no changes (exit 0, no output).
+ SOVERSION unchanged at 0 (librocfft.so.0). No debian/*.symbols file;
+ symbol visibility is controlled by a version script (patch
+ Add-version-script-to-control-exposed-symbols.patch).
- * This update is part of the coordinated ROCm 7.2.x stack release for
- Ubuntu stonking (26.10) and resolute (26.04 LTS).
+ * This update is part of the coordinated ROCm 7.2.x stack release for
+ Ubuntu stonking (26.10) and resolute (26.04 LTS).
- * PPA: https://launchpad.net/~igorluppi/+archive/ubuntu/rocfft-7.2.3
+ * PPA: https://launchpad.net/~igorluppi/+archive/ubuntu/rocfft-7.2.3
+ (link says 7.2.3 but the package is actually 7.2.4).
- * Upstream version comparison:
- https://github.com/ROCm/rocm-libraries/compare/rocm-7.1.1...rocm-7.2.4
+ * Upstream version comparison:
+ https://github.com/ROCm/rocm-libraries/compare/rocm-7.1.1...rocm-7.2.4
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https://bugs.launchpad.net/bugs/2155392
Title:
New upstream version 7.2.4
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