Testing: initialize ISPEC=9 before running DMD tests#1228
Merged
langou merged 1 commit intoReference-LAPACK:masterfrom Apr 15, 2026
Merged
Testing: initialize ISPEC=9 before running DMD tests#1228langou merged 1 commit intoReference-LAPACK:masterfrom
langou merged 1 commit intoReference-LAPACK:masterfrom
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The DMD test drivers use the testing ILAENV from TESTING/EIG, where ISPEC=9 returns IPARMS(9). The drivers never initialized that entry, so the xGESDD/xBDSDC divide-and-conquer cutoff SMLSIZ came from undefined state. This undefined test state can lead to invalid xLASD0 calls and a large number of false failures. In this patch we initialize XLAENV(9,25) in the s/c/d/z DMD test drivers so the tests start from a defined ILAENV configuration.
martin-frbg
approved these changes
Apr 15, 2026
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The DMD test drivers use the testing ILAENV from TESTING/EIG, where ISPEC=9 returns IPARMS(9). The drivers never initialized that entry, so the xGESDD/xBDSDC divide-and-conquer cutoff came from undefined state.
This undefined test state can lead to invalid xLASD0 calls and a large number of false failures. In this patch we initialize XLAENV(9,25) in the s/c/d/z DMD test drivers so the tests start from a defined ILAENV configuration.
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