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ID | Project | Category | View Status | Date Submitted | Last Update | ||||
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0000232 | mercury | Bug | public | 2011-11-24 11:16 | 2015-11-02 16:07 | ||||
Reporter | pbone | ||||||||
Assigned To | pbone | ||||||||
Priority | normal | Severity | minor | Reproducibility | always | ||||
Status | resolved | Resolution | won't fix | ||||||
Product Version | |||||||||
Target Version | Fixed in Version | ||||||||
Summary | 0000232: The thread pinning code in the parallel runtime doesn't work on older Linux systems. | ||||||||
Description | There are two alternatives for the thread pinning code in Mercury's Parallel low-level C runtime. hwloc() and sched_setaffinity(). When libhwloc is not available sched_setaffinity will be used. Later versions of glibc provide several macros to manipulate bitsets for use with sched_setaffinity, some or all of these macros may be unavailable on some systems. Currently mercury expects all the macros to be available whenever sched_setaffinity is available - which is not the case on older versions of glibc (such as on RHEL 5). Furthermore, Non-linux OSs that support sched_setaffinity may also have problems. To work-around this issue install libhwloc. | ||||||||
Tags | No tags attached. | ||||||||
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