Bug 236083
| Summary: | illegal instruction exception on 64 bit machine | ||
|---|---|---|---|
| Product: | [Fedora] Fedora | Reporter: | charles harris <charlesr.harris> |
| Component: | atlas | Assignee: | Quentin Spencer <qspencer> |
| Status: | CLOSED WONTFIX | QA Contact: | Fedora Extras Quality Assurance <extras-qa> |
| Severity: | medium | Docs Contact: | |
| Priority: | medium | ||
| Version: | 5 | CC: | triage |
| Target Milestone: | --- | ||
| Target Release: | --- | ||
| Hardware: | All | ||
| OS: | Linux | ||
| Whiteboard: | bzcl34nup | ||
| Fixed In Version: | Doc Type: | Bug Fix | |
| Doc Text: | Story Points: | --- | |
| Clone Of: | Environment: | ||
| Last Closed: | 2008-05-06 19:30:23 UTC | Type: | --- |
| Regression: | --- | Mount Type: | --- |
| Documentation: | --- | CRM: | |
| Verified Versions: | Category: | --- | |
| oVirt Team: | --- | RHEL 7.3 requirements from Atomic Host: | |
| Cloudforms Team: | --- | Target Upstream Version: | |
| Embargoed: | |||
Atlas-2.7.30 compiled on my machine works fine for the test program. Fedora apologizes that these issues have not been resolved yet. We're sorry it's taken so long for your bug to be properly triaged and acted on. We appreciate the time you took to report this issue and want to make sure no important bugs slip through the cracks. If you're currently running a version of Fedora Core between 1 and 6, please note that Fedora no longer maintains these releases. We strongly encourage you to upgrade to a current Fedora release. In order to refocus our efforts as a project we are flagging all of the open bugs for releases which are no longer maintained and closing them. http://fedoraproject.org/wiki/LifeCycle/EOL If this bug is still open against Fedora Core 1 through 6, thirty days from now, it will be closed 'WONTFIX'. If you can reporduce this bug in the latest Fedora version, please change to the respective version. If you are unable to do this, please add a comment to this bug requesting the change. Thanks for your help, and we apologize again that we haven't handled these issues to this point. The process we are following is outlined here: http://fedoraproject.org/wiki/BugZappers/F9CleanUp We will be following the process here: http://fedoraproject.org/wiki/BugZappers/HouseKeeping to ensure this doesn't happen again. And if you'd like to join the bug triage team to help make things better, check out http://fedoraproject.org/wiki/BugZappers This bug is open for a Fedora version that is no longer maintained and will not be fixed by Fedora. Therefore we are closing this bug. If you can reproduce this bug against a currently maintained version of Fedora please feel free to reopen thus bug against that version. Thank you for reporting this bug and we are sorry it could not be fixed. |
Description of problem: cblas_dgemm generates illegal instruction error for large arrays. Version-Release number of selected component (if applicable): atlas-3.6.0-10.fc5 atlas-devel-3.6.0-10.fc5 How reproducible: Always. Steps to Reproduce: 1. Compile #include <atlas/cblas.h> int main(int argc, char **argv) { static double a[1000*1000]; static double b[1000*1000]; static double c[1000*1000]; double alpha=1, beta=0; cblas_dgemm(CblasRowMajor, CblasNoTrans, CblasNoTrans, 1000, 1000, 1000, alpha, a, 1000, b, 1000, beta, c, 1000); return 1; } 2. Compile gcc -L/usr/lib64/atlas -lcblas blas_error.c -o blas_error 3. Run ./blas_error Actual results: Illegal instruction Expected results: Zippo Additional info: This is a 64 bit problem with large arrays, it doesn't occur on 32 bit machines or with smaller arrays. My machine is vendor_id : GenuineIntel cpu family : 15 model : 4 model name : Intel(R) Xeon(TM) CPU 3.40GHz The bug also appears with Ubuntu Dapper and there is a similar report in the octave mailing list.